Hydraulic pump power control method and device

Abstract

The invention relates to the technical field of hydraulic pumps, and discloses a hydraulic pump power control method and device.The method comprises the steps that a pressure signal and a displacement signal of a hydraulic pump and a rotating speed signal of a prime motor within a preset first time period are obtained; whether the pressure signal is larger than a preset first threshold value or not is judged, and when it is judged that the pressure signal is larger than the preset first threshold value, timing is started; calculating a comprehensive signal coefficient of the pressure signal, the displacement signal and the rotating speed signal; judging whether the comprehensive signal coefficient is a steady-state coefficient or not, and when the comprehensive signal coefficient is judged to be the steady-state coefficient, matching a time domain range parameter where a time coefficient corresponding to timing is located; and according to the pressure signal, the displacement signal, the rotating speed signal and the time domain range parameter, generating a working condition self-adaptive control parameter so as to self-adaptively adjust the power of the hydraulic pump. Therefore, by implementing the method, the power control efficiency, accuracy and stability of the hydraulic pump can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic pumps, and in particular to a hydraulic pump power control method and device. Background Art

[0002] In the field of hydraulic engineering machinery (such as excavators), main pump power control directly affects the equipment's energy consumption and dynamic response performance.

[0003] Traditional solutions usually achieve power matching by adjusting the engine speed. However, practice has found that there is significant inertia in engine speed adjustment. When the load suddenly changes and power needs to be restored, the hydraulic pump cannot follow quickly, resulting in delayed action.

[0004] It can be seen that how to improve the power control efficiency and accuracy of the hydraulic pump is particularly important. Summary of the Invention

[0005] The present invention provides a hydraulic pump power control method and device, which can improve the power control efficiency and accuracy of the hydraulic pump.

[0006] In order to solve the above technical problems, the first aspect of the present invention discloses a hydraulic pump power control method, the method comprising: Acquiring a pressure signal, a displacement signal of the hydraulic pump and a speed signal of the prime mover within a preset first time period; determining whether the pressure signal is greater than a preset first threshold, and starting timing when it is determined that the pressure signal is greater than the preset first threshold; Calculating a comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal; Determining whether the integrated signal coefficient is a steady-state coefficient, and when it is determined that the integrated signal coefficient is the steady-state coefficient, matching the time domain range parameter of the time coefficient corresponding to the timing; According to the pressure signal, the displacement signal, the speed signal and the time domain range parameter, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump.

[0007] As an optional embodiment, in the first aspect of the present invention, generating a working condition adaptive control parameter based on the pressure signal, the displacement signal, the speed signal, and the time domain range parameter to adaptively adjust the power of the hydraulic pump includes: matching a first priority value of the speed signal and a second priority value of the displacement signal according to the time domain range parameter; updating the speed signal according to the first priority value; updating the displacement signal according to the second priority value; According to the pressure signal, the updated speed signal and the updated displacement signal, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump.

[0008] As an optional implementation manner, in the first aspect of the present invention, matching the first priority value of the speed signal and the second priority value of the displacement signal according to the time domain range parameter includes: Dividing the time domain range parameters into a plurality of level intervals, each level interval corresponding to a set of independent control weight parameters; The first priority value of the speed signal and the second priority value of the displacement signal are matched according to the control weight parameter of the level interval matching.

[0009] As an optional implementation manner, in the first aspect of the present invention, the time domain range parameter is negatively correlated with the first priority value and the second priority value.

[0010] As an optional embodiment, in the first aspect of the present invention, the preset first time period includes multiple moments, and the calculating of the comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal includes: For each of the moments, calculating the momentary comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal at the moment; Calculating the comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal within the preset first time period based on the comprehensive signal coefficients at all the moments; Furthermore, the integrated signal coefficient is used to represent the change trajectory of the integrated signal coefficient at all the moments, and the determining whether the integrated signal coefficient is a steady-state coefficient includes: determining a trajectory amplitude range parameter of the integrated signal coefficient; It is determined whether the trajectory amplitude range parameter is less than a preset trajectory amplitude range threshold parameter. When the trajectory amplitude range parameter is less than the preset trajectory amplitude range threshold parameter, it is determined that the integrated signal coefficient is a steady-state coefficient.

[0011] As an optional embodiment, in the first aspect of the present invention, the method further comprises: Analyzing multi-dimensional characteristic parameters of the comprehensive signal coefficients; Analyzing the steady-state determination result of the integrated signal coefficient according to the multi-dimensional characteristic parameters; Dynamically adjusting the updating strategy of the preset first threshold according to the steady-state determination result; Furthermore, the steady-state determination result is used to indicate a historical time-series variation characteristic of the integrated signal coefficient, wherein the historical time-series variation characteristic includes a fluctuation amplitude and a duration of the integrated signal coefficient within a preset second time period; and the updating strategy for dynamically adjusting the preset first threshold value based on the steady-state determination result includes: Establishing a dynamic correlation model between the pressure signal and the preset first threshold based on the historical time series variation characteristics of the comprehensive signal coefficient; According to the dynamic correlation model, the target value range of the preset first threshold is updated in real time to match the current power demand of the hydraulic pump.

[0012] As an optional embodiment, in the first aspect of the present invention, the method further comprises: Establishing a redundant check mechanism for the pressure signal, the displacement signal, and the speed signal to correct the comprehensive signal coefficient; And, the redundancy check mechanism includes: For any one of the pressure signal, the displacement signal, the speed signal, and associated signals thereof, determining a signal trajectory parameter of the signal within a preset third time period; determining whether the signal trajectory parameter matches a preset signal trajectory parameter of the signal, and when it is determined that the signal trajectory parameter does not match the preset signal trajectory parameter of the signal, reconstructing the signal trajectory parameter of the signal based on a historical mean of remaining signals of the signal; Correcting the comprehensive signal coefficient according to the reconstructed signal trajectory parameter of the signal and the correlation value between the signal and the current working condition; The correlation value is calculated based on the difference between the signal trajectory parameters before and after the signal reconstruction and the preset weight corresponding to the current working condition.

[0013] A second aspect of the present invention discloses a hydraulic pump power control device, the device comprising: an acquisition module, configured to acquire a pressure signal, a displacement signal of the hydraulic pump and a speed signal of the prime mover within a preset first time period; a judgment module, configured to judge whether the pressure signal is greater than a preset first threshold; a timing module, configured to start timing when the judgment module determines that the pressure signal is greater than the preset first threshold; a calculation module, configured to calculate a comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal; The judging module is further configured to judge whether the comprehensive signal coefficient is a steady-state coefficient; a matching module, configured to match the time domain range parameter of the time coefficient corresponding to the timing when the judging module judges that the comprehensive signal coefficient is the steady-state coefficient; A generating module is used to generate working condition adaptive control parameters according to the pressure signal, the displacement signal, the speed signal and the time domain range parameter to adaptively adjust the power of the hydraulic pump.

[0014] As an optional embodiment, in the second aspect of the present invention, the generating module generates the working condition adaptive control parameter based on the pressure signal, the displacement signal, the speed signal, and the time domain range parameter to adaptively adjust the power of the hydraulic pump. The specific manner includes: matching a first priority value of the speed signal and a second priority value of the displacement signal according to the time domain range parameter; updating the speed signal according to the first priority value; updating the displacement signal according to the second priority value; According to the pressure signal, the updated speed signal and the updated displacement signal, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump.

[0015] As an optional implementation, in the second aspect of the present invention, the specific manner in which the generating module matches the first priority value of the speed signal and the second priority value of the displacement signal according to the time domain range parameter includes: Dividing the time domain range parameters into a plurality of level intervals, each level interval corresponding to a set of independent control weight parameters; The first priority value of the speed signal and the second priority value of the displacement signal are matched according to the control weight parameter of the level interval matching.

[0016] As an optional implementation, in the second aspect of the present invention, the time domain range parameter is negatively correlated with the first priority value and the second priority value.

[0017] As an optional embodiment, in the second aspect of the present invention, the preset first time period includes multiple moments, and the specific manner in which the calculation module calculates the comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal includes: For each of the moments, calculating the momentary comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal at the moment; Calculating the comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal within the preset first time period based on the comprehensive signal coefficients at all the moments; Furthermore, the comprehensive signal coefficient is used to represent the change trajectory of the comprehensive signal coefficient at all the moments. The specific manner in which the judgment module judges whether the comprehensive signal coefficient is a steady-state coefficient includes: determining a trajectory amplitude range parameter of the integrated signal coefficient; It is determined whether the trajectory amplitude range parameter is less than a preset trajectory amplitude range threshold parameter. When the trajectory amplitude range parameter is less than the preset trajectory amplitude range threshold parameter, it is determined that the integrated signal coefficient is a steady-state coefficient.

[0018] As an optional embodiment, in the second aspect of the present invention, the device further includes: An analysis module, configured to analyze multi-dimensional characteristic parameters of the comprehensive signal coefficients; The analysis module is further configured to analyze the steady-state determination result of the comprehensive signal coefficient based on the multi-dimensional characteristic parameters; An adjustment module, configured to dynamically adjust an update strategy of the preset first threshold value according to the steady-state determination result; Furthermore, the steady-state determination result is used to indicate a historical time-series variation characteristic of the integrated signal coefficient, where the historical time-series variation characteristic includes a fluctuation amplitude and duration of the integrated signal coefficient within a preset second time period. Specifically, the adjustment module dynamically adjusts the update strategy of the preset first threshold according to the steady-state determination result, including: Establishing a dynamic correlation model between the pressure signal and the preset first threshold based on the historical time series variation characteristics of the comprehensive signal coefficient; According to the dynamic correlation model, the target value range of the preset first threshold is updated in real time to match the current power demand of the hydraulic pump.

[0019] As an optional embodiment, in the second aspect of the present invention, the device further includes: a verification module, configured to establish a redundant verification mechanism for the pressure signal, the displacement signal, and the speed signal, so as to correct the comprehensive signal coefficient; And, the redundancy check mechanism includes: For any one of the pressure signal, the displacement signal, the speed signal, and associated signals thereof, determining a signal trajectory parameter of the signal within a preset third time period; determining whether the signal trajectory parameter matches a preset signal trajectory parameter of the signal, and when it is determined that the signal trajectory parameter does not match the preset signal trajectory parameter of the signal, reconstructing the signal trajectory parameter of the signal based on a historical mean of remaining signals of the signal; Correcting the comprehensive signal coefficient according to the reconstructed signal trajectory parameter of the signal and the correlation value between the signal and the current working condition; The correlation value is calculated based on the difference between the signal trajectory parameters before and after the signal reconstruction and the preset weight corresponding to the current working condition.

[0020] A third aspect of the present invention discloses another hydraulic pump power control device, the device comprising: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the hydraulic pump power control method disclosed in the first aspect of the present invention.

[0021] A fourth aspect of the present invention discloses a computer storage medium, wherein the computer storage medium stores computer instructions. When the computer instructions are called, they are used to execute the hydraulic pump power control method disclosed in the first aspect of the present invention.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: In an embodiment of the present invention, a pressure signal, a displacement signal and a speed signal of a hydraulic pump within a preset first time period are obtained; it is determined whether the pressure signal is greater than a preset first threshold value, and when it is determined that the pressure signal is greater than the preset first threshold value, timing is started; a comprehensive signal coefficient of the pressure signal, the displacement signal and the speed signal is calculated; it is determined whether the comprehensive signal coefficient is a steady-state coefficient, and when it is determined that the comprehensive signal coefficient is a steady-state coefficient, the time domain range parameter of the time coefficient corresponding to the timing is matched; based on the pressure signal, the displacement signal, the speed signal and the time domain range parameter, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump. It can be seen that the implementation of the present invention can comprehensively judge the pressure holding state (high pressure + low displacement) by synchronously collecting the three signals of pressure, displacement and speed, avoid misjudgment caused by a single signal (such as high pressure only), and improve the accuracy of identifying the pressure holding condition; quantify the power state through the comprehensive signal coefficient (P×D×N) to provide a reliable basis for control decision-making; start timing when the pressure exceeds the threshold, and judge the continuous pressure holding in combination with the steady-state coefficient; distinguish between instantaneous fluctuations and continuous pressure holding to avoid adjusting the power too early or too late; provide a time dimension basis for staged control and enhance the rationality of system response; trigger adjustment when the comprehensive signal coefficient is steady-state to ensure that power is reduced only when the real power is in excess, reduce energy waste caused by invalid adjustment, filter noise interference through steady-state judgment, improve the robustness of control logic, and realize the combination of improved accurate working condition identification capability, dynamic response optimization and strengthened energy efficiency control foundation, combined with the actual application scenarios of hydraulic pumps, to comprehensively improve the power control efficiency, accuracy and stability of hydraulic pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a flow chart of a hydraulic pump power control method disclosed in an embodiment of the present invention; Figure 2 It is a flow chart of another hydraulic pump power control method disclosed in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a hydraulic pump power control device disclosed in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of another hydraulic pump power control device disclosed in an embodiment of the present invention; Figure 5 This is a structural diagram of another hydraulic pump power control device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] The terms "first," "second," and so on, in the description and claims of the present invention and the accompanying drawings are used to distinguish between different items, not to describe a specific order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or end comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed therein, or may optionally include other steps or elements inherent to such process, method, product, or end.

[0027] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] The present invention discloses a hydraulic pump power control method and device. These methods utilize the synchronous acquisition of three signals: pressure, displacement, and speed, to comprehensively determine the pressure buildup state (high pressure + low displacement), avoiding misjudgments caused by a single signal (e.g., high pressure alone) and improving the accuracy of identifying pressure buildup conditions. The method also quantifies the power state using a comprehensive signal coefficient (P×D×N), providing a reliable basis for control decisions. A timer is initiated when pressure exceeds a threshold, and the steady-state coefficient is combined to determine whether pressure buildup persists. The method distinguishes between transient fluctuations and sustained pressure buildup, avoiding premature or late power adjustments. The method provides a temporal basis for staged control and enhances the rationality of system response. Adjustment is triggered when the comprehensive signal coefficient is steady-state, ensuring that power is reduced only when actual power is excessive, reducing energy waste caused by ineffective adjustments. The steady-state determination filters out noise interference, enhancing the robustness of the control logic. This method combines improved precise operating condition identification capabilities, optimized dynamic response, and strengthened energy efficiency control foundations. This method, combined with practical hydraulic pump application scenarios, comprehensively improves the efficiency, accuracy, and stability of hydraulic pump power control. These are described in detail below.

[0029] Example 1 See also Figure 1 , Figure 1 This is a flow chart of a hydraulic pump power control method disclosed in an embodiment of the present invention. Figure 1 The hydraulic pump power control method described can be applied to hydraulic pumps, and can also be applied to intelligent devices related to hydraulic pumps, such as but not limited to one or more of battery devices, cloud devices, edge computing devices, relay devices, base station devices, urban management devices, and intelligent network devices, which are not limited in the embodiments of the present invention. Figure 1 As shown, the hydraulic pump power control method may include the following operations: 101. Obtain a pressure signal, a displacement signal of a hydraulic pump, and a speed signal of a prime mover within a preset first time period; In an embodiment of the present invention, optionally, the hydraulic pump outlet pressure (P) is collected in real time by a pressure sensor, the displacement (D) is obtained through feedback from a pump controller, and the speed (N) is obtained through the prime mover (engine) ECU.

[0030] Execution logic: The controller reads the three signals synchronously with a fixed sampling period (such as 100ms) to ensure data timeliness.

[0031] 102. Determine whether the pressure signal is greater than a preset first threshold; In the embodiment of the present invention, optionally, the first threshold value (Pmax) is preset to 90% to 95% of the opening pressure of the main pump relief valve, for identifying a pressure holding condition.

[0032] Execution logic: If P>Pmax for three consecutive sampling cycles, it is determined to be effective pressure holding and timer T is started.

[0033] 103. When it is determined that the pressure signal is greater than a preset first threshold, the timing is started; 104. Calculate the comprehensive signal coefficient of the pressure signal, displacement signal and speed signal; In the embodiment of the present invention, optionally, for the calculation of the comprehensive signal coefficient: Meaning: The comprehensive signal coefficient K = P × D × N represents the instantaneous state of the pump power.

[0034] Execution logic: Calculate K_t at each sampling moment and count the K_t sequence within a preset period (such as 1 second).

[0035] 105. Determine whether the comprehensive signal coefficient is a steady-state coefficient; In the embodiment of the present invention, optionally, for the determination of the steady-state coefficient: Meaning: If the range of K_t within the time period (K_max - K_min) is less than ΔK_th (such as 5% of the rated power), it is determined to be in steady state.

[0036] Execution logic: Calculate the range through a sliding window to avoid interference from instantaneous fluctuations.

[0037] 106. When it is determined that the comprehensive signal coefficient is a steady-state coefficient, the time domain range parameter of the time coefficient corresponding to the timing is matched; 107. Generate working condition adaptive control parameters based on pressure signal, displacement signal, speed signal and time domain range parameters to adaptively adjust the power of the hydraulic pump.

[0038] In the embodiment of the present invention, optionally, when T>Tx is true and P*D*N is a constant, a control measure is output; wherein the control measure includes at least one of the following: Reduce the prime mover speed N; specifically, N=N*CN, where CN is a preset constant; Reduce the displacement D of the hydraulic pump, specifically, D=D*CD, where CD is a preset constant; Furthermore, T>Tx can be further divided into: T>T1 and T>T2, each corresponding to a different control measure. For example, when T>T1 is true and P*D*N is a constant, a control measure is output. The control measure includes at least one of the following: Reduce the prime mover speed N; specifically, N=N*CN1, where CN1 is a preset constant; Reduce the displacement D of the hydraulic pump, specifically, D=D*CD1, where CD1 is a preset constant; In one embodiment, T1=3 seconds, CN1=0.8, CD1=0.8; When T>T2 is true and P*D*N is a constant, output a control measure; wherein the control measure includes at least one of the following: Reduce the prime mover speed N; specifically, N=N*CN2, where CN2 is a preset constant; Reduce the displacement D of the hydraulic pump, specifically, D=D*CD2, where CD2 is a preset constant; In one embodiment, T2=10 seconds, CN2=0.5, CD2=0.5; It can be seen that the implementation of the embodiment of the present invention can comprehensively judge the pressure holding state (high pressure + low displacement) by synchronously collecting the three signals of pressure, displacement and speed, avoid misjudgment caused by a single signal (such as high pressure only), and improve the accuracy of identifying the pressure holding condition; quantify the power state through the comprehensive signal coefficient (P×D×N) to provide a reliable basis for control decision-making; start timing when the pressure exceeds the threshold, and judge the continuous pressure holding in combination with the steady-state coefficient; distinguish between instantaneous fluctuations and continuous pressure holding to avoid adjusting the power too early or too late; provide a time dimension basis for staged control and enhance the rationality of system response; trigger adjustment when the comprehensive signal coefficient is steady-state to ensure that power is reduced only when the actual power is in excess, reduce energy waste caused by invalid adjustment, filter noise interference through steady-state judgment, improve the robustness of control logic, and realize the combination of improved accurate working condition identification capability, dynamic response optimization and strengthened energy efficiency control foundation, and combine with the actual application scenarios of hydraulic pumps to comprehensively improve the power control efficiency, accuracy and stability of hydraulic pumps.

[0039] In an embodiment of the present invention, as an optional implementation, the above-mentioned method of generating the working condition adaptive control parameter based on the pressure signal, the displacement signal, the speed signal and the time domain range parameter to adaptively adjust the power of the hydraulic pump includes: Matching a first priority value of the speed signal and a second priority value of the displacement signal according to a time domain range parameter; updating the speed signal according to the first priority value; updating the displacement signal according to the second priority value; According to the pressure signal, the updated speed signal and the updated displacement signal, working condition adaptive control parameters are generated to adaptively adjust the power of the hydraulic pump.

[0040] In the embodiment of the present invention, optionally, for priority value matching: Meaning: Short-term pressure holding (T1 stage) gives higher priority to displacement regulation (second priority value = 0.8), and long-term pressure holding (T2 stage) synchronously reduces the priorities of speed and displacement (first / second priority value = 0.5).

[0041] Execution logic: The controller has a built-in weight mapping table, and looks up the weight according to the T value.

[0042] For signal update: Meaning: Scale the speed and displacement target values according to the weight ratio (e.g., N_new = N × CN1).

[0043] Execution logic: Send the scaled N_new and D_new to the actuator.

[0044] For control parameter generation: Meaning: Combine the real-time pressure P with the updated N_new and D_new to calculate the power matching instruction.

[0045] Execution logic: If P continues to exceed the standard, iteratively reduce N_new and D_new until P returns to normal.

[0046] It can be seen that implementing this optional embodiment can allocate the priority values of speed and displacement based on the time domain range parameters, enabling short-term pressure holding to adjust the displacement first (fast response), long-term pressure holding to synchronously adjust the speed (deep energy saving), balancing the response speed and energy efficiency, and avoiding the problem of delayed power recovery caused by the single speed reduction in competing product solutions; by combining the updated speed and displacement to generate control parameters, achieving progressive adjustment of power output, reducing the impact of the hydraulic system, adapting to changes in load requirements, and improving the operation fluency; fully combining the dynamic adaptation of adjustment priorities and the refinement of power matching, improving the accuracy and comprehensiveness of the generation of working condition adaptive control parameters.

[0047] In this optional embodiment, as an optional implementation manner, the above matching of the first priority value of the speed signal and the second priority value of the displacement signal according to the time domain range parameters includes: Dividing the time domain range parameters into multiple level intervals, and each level interval corresponds to a set of independent control weight parameters; Matching the first priority value of the speed signal and the second priority value of the displacement signal according to the control weight parameters matched by the level interval.

[0048] [[ID=3,2]]In the embodiment of the present invention, optionally, for the division of level intervals: Meaning: The time domain range parameters are divided into three levels according to the T value: Level 1: 0 < T ≤ 3 seconds (short-term pressure holding); Level 2: 3 seconds < T ≤ 10 seconds (transition stage); Level 3: T>10 seconds (long-term pressure holding); Execution logic: Each level corresponds to an independent control weight parameter (e.g., Level 1: CN1=0.8, CD1=0.8).

[0049] For dynamic weight allocation: Meaning: Level 1 prioritizes displacement adjustment (CD1 has a higher weight), and Level 3 adjusts speed and displacement simultaneously (CN3=CD3=0.5).

[0050] Execution logic: The controller calls the preset weight combination according to the level of the T value.

[0051] It can be seen that the implementation of this optional embodiment can divide the time domain range into multi-level intervals, match independent weight parameters, support customized control (such as short-term fine-tuning, long-term large-scale power reduction), enhance adaptability to complex working conditions, avoid insufficient response or excessive adjustment caused by fixed adjustment amplitude, and complete hierarchical optimization of control strategies, which is conducive to further improving the accuracy and comprehensiveness of the generation of working condition adaptive control parameters.

[0052] In this optional embodiment, as another optional implementation manner, the above-mentioned time domain range parameter is negatively correlated with the first priority value and the second priority value.

[0053] In the embodiment of the present invention, optionally, for the negative correlation logic: Meaning: The larger the time domain range parameter (T value), the smaller the first / second priority value (CN / CD).

[0054] Execution logic: When T>10 seconds, CN / CD drops to 0.5; when T≤3 seconds, it remains at 0.8, reflecting the principle that "the longer the pressure is held, the greater the adjustment range."

[0055] It can be seen that the implementation of this optional embodiment can achieve precise matching of "deep pressure holding to deep power reduction" through the negative correlation between the time domain range parameters and the priority weight value (the longer the pressure holding, the lower the weight value), optimize energy efficiency, and ensure system stability through smooth changes in weight values, thereby avoiding equipment vibration caused by power mutation.

[0056] In an embodiment of the present invention, as another optional implementation, the above-mentioned preset first time period includes multiple moments, and calculating the comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal includes: For each moment, calculate the moment comprehensive signal coefficient of the pressure signal, displacement signal and speed signal at that moment; Calculate the comprehensive signal coefficients of the pressure signal, displacement signal and speed signal within the preset first time period based on the comprehensive signal coefficients at all times; Optionally, the integrated signal coefficient is used to represent the change trajectory of the integrated signal coefficient at all times, and to determine whether the integrated signal coefficient is a steady-state coefficient, including: Determine trajectory amplitude range parameters of integrated signal coefficients; It is determined whether the trajectory amplitude range parameter is less than a preset trajectory amplitude range threshold parameter. When the trajectory amplitude range parameter is less than the preset trajectory amplitude range threshold parameter, the comprehensive signal coefficient is determined to be a steady-state coefficient.

[0057] In the embodiment of the present invention, optionally, for the comprehensive signal coefficient at the moment: Meaning: K_t = P_t × D_t × N_t at a single moment, reflecting the instantaneous power state.

[0058] Execution logic: K_t is calculated and cached every 100ms.

[0059] For the time period comprehensive signal coefficient: Meaning: The trajectory amplitude of K within the time period = max(K_t) - min(K_t) (t∈time period).

[0060] Execution logic: Count the trajectory amplitude every 1 second.

[0061] For steady-state determination: Meaning: If the trajectory amplitude is less than the preset threshold (such as 5% of the rated K), it is determined to be in a steady state.

[0062] Execution logic: compare the trajectory amplitude with the threshold and output the Boolean judgment result.

[0063] It can be seen that the implementation of this optional embodiment can determine stability through the trajectory amplitude (such as extreme difference) of the comprehensive signal coefficient within a time period, filter out transient interference (such as hydraulic shock), and reduce the false trigger rate; it makes the calculation simple and efficient, and is suitable for real-time processing of embedded controllers.

[0064] Example 2 See also Figure 2 , Figure 2 This is a flow chart of another hydraulic pump power control method disclosed in an embodiment of the present invention. Figure 2 The hydraulic pump power control method described can be applied to hydraulic pumps, and can also be applied to intelligent devices related to hydraulic pumps, such as but not limited to one or more of battery devices, cloud devices, edge computing devices, relay devices, base station devices, urban management devices, and intelligent network devices, which are not limited in the embodiments of the present invention. Figure 2 As shown, the hydraulic pump power control method may include the following operations: 201. Obtain a pressure signal, a displacement signal of a hydraulic pump, and a speed signal of a prime mover within a preset first time period; 202. Determine whether the pressure signal is greater than a preset first threshold; 203. When it is determined that the pressure signal is greater than a preset first threshold, the timing is started; 204. Calculate the comprehensive signal coefficient of the pressure signal, the displacement signal and the speed signal; 205. Establish a redundant verification mechanism for pressure signal, displacement signal and speed signal to correct the comprehensive signal coefficient; In an embodiment of the present invention, optionally, the above-mentioned redundancy check mechanism includes: For any one of the pressure signal, the displacement signal, the speed signal, and related signals thereof, determining a signal trajectory parameter of the signal within a preset third time period; determining whether the signal trajectory parameters match the preset signal trajectory parameters of the signal, and when it is determined that the signal trajectory parameters do not match the preset signal trajectory parameters of the signal, reconstructing the signal trajectory parameters of the signal based on historical averages of remaining signals of the signal; Correcting the comprehensive signal coefficient according to the reconstructed signal trajectory parameter of the signal and the correlation value between the signal and the current working condition; The correlation value is calculated based on the difference between the signal trajectory parameters before and after the signal reconstruction and the preset weight corresponding to the current working condition.

[0065] In the embodiment of the present invention, optionally, for the redundancy check mechanism: Meaning: Performs cross-cycle consistency check on three signals (for example, D and N should satisfy D×N≈constant).

[0066] Execution logic: If a signal deviates from the historical mean by ±20%, reconstruction is triggered.

[0067] For signal trace reconstruction: Meaning: Abnormal signal target value = historical mean value of other signals × operating condition correction coefficient.

[0068] Execution logic: For example, when the pressure P is abnormal, P_target = (D_avg × N_avg) / K_base (K_base is the rated power constant).

[0069] For relevance correction: Meaning: Correlation value = |abnormal signal measured value - target value| / target value × working condition weight.

[0070] Execution logic: When the pressure is severe (P>1.2Pmax), the operating condition weight = 1.2, and the correction range is amplified; the normal operating condition weight = 1.0.

[0071] For comprehensive signal correction: Meaning: If the correlation is greater than 30%, the abnormal signal is replaced by the target value to participate in the K calculation.

[0072] Execution logic: Recalculate K after reconstruction to ensure the continuity of control logic.

[0073] 206. Determine whether the comprehensive signal coefficient is a steady-state coefficient; 207. When it is determined that the comprehensive signal coefficient is a steady-state coefficient, the time domain range parameter of the time coefficient corresponding to the timing is matched; 208. Generate working condition adaptive control parameters based on pressure signal, displacement signal, speed signal and time domain range parameters to adaptively adjust the power of the hydraulic pump.

[0074] In the embodiment of the present invention, for the supplementary explanations of steps 201 to 204 and steps 206 to 208, please refer to the supplementary explanations of steps 101 to 107 in the first embodiment, which will not be described in detail in the embodiment of the present invention. It can be seen that the implementation of the embodiment of the present invention can further reconstruct abnormal signals (such as using displacement and speed to infer pressure) through a redundant check mechanism, so that the system can still operate in a degraded manner when a single sensor fails, ensuring operation continuity and reducing the risk of control interruption due to signal abnormalities; correcting the comprehensive signal coefficient through the correlation value, reducing the impact of noise or drift signals on working condition judgment, and combining the current working condition weight (such as the high weight in the pressure holding stage) to ensure that the reconstructed signal matches the actual load, further improving the system's fault tolerance and enhancing the reliability of the comprehensive signal.

[0075] In an embodiment of the present invention, as an optional implementation manner, the method may further include: Analyze the multi-dimensional characteristic parameters of the comprehensive signal coefficients; Analyze the steady-state determination results of the comprehensive signal coefficients based on multi-dimensional characteristic parameters; Dynamically adjust the update strategy of the preset first threshold according to the steady-state determination result; Optionally, the steady-state determination result is used to indicate a historical time-series variation characteristic of the integrated signal coefficient, where the historical time-series variation characteristic includes a fluctuation amplitude and duration of the integrated signal coefficient within a preset second time period. Dynamically adjusting an update strategy for the preset first threshold based on the steady-state determination result includes: Based on the historical time series variation characteristics of the comprehensive signal coefficient, a dynamic correlation model between the pressure signal and the preset first threshold is established; According to the dynamic correlation model, the target value range of the preset first threshold is updated in real time to match the current power demand of the hydraulic pump.

[0076] In the embodiment of the present invention, optionally, for the multi-dimensional feature parameters: Meaning: includes fluctuation amplitude (range), duration (continuous steady-state count), and change slope.

[0077] Execution logic: Historical features are counted every 5 minutes and stored in a ring buffer.

[0078] For dynamic association models: Meaning: Establish the relationship between "fluctuation amplitude-duration" and Pmax through linear regression: Low fluctuation + long duration → reduce Pmax (trigger adjustment in advance); High fluctuation + short duration → Increase Pmax (avoid false triggering); Execution logic: The model updates the Pmax target range every 10 minutes.

[0079] For threshold adaptive update: Meaning: Pmax_new = Pmax_base × (1 - Fluctuation Compensation Factor).

[0080] Execution logic: Dynamically correct Pmax based on model output and limit it to a safe range (such as ±10%).

[0081] It can be seen that the implementation of this optional embodiment can dynamically adjust the threshold based on historical time series characteristics (fluctuation amplitude, duration), so as to adapt to scenarios such as oil temperature changes and component aging, avoid the problem of fixed threshold failure, reduce the frequency of manual calibration, and reduce maintenance costs; continuously optimize the threshold through the dynamic correlation model, improve the control consistency of the system under variable working conditions, extend the service life of the equipment, achieve dynamic adaptability of the threshold, and improve the long-term robustness of the system, and then through the closed-loop logic of multi-dimensional signal coordination, staged dynamic control, and fault-tolerant mechanism protection, systematically solve the defects of competing products such as response delay, energy waste and insufficient reliability, and achieve accurate, efficient and stable control of hydraulic pump power.

[0082] Example 3 See also Figure 3 , Figure 3 This is a structural diagram of a hydraulic pump power control device disclosed in an embodiment of the present invention. The hydraulic pump power control device can be applied to hydraulic pumps, and can also be applied to intelligent devices related to hydraulic pumps, including but not limited to one or more of battery devices, cloud devices, edge computing devices, relay devices, base station devices, urban management devices, and intelligent network devices, which are not limited in the embodiment of the present invention. Figure 3 As shown, the hydraulic pump power control device may include: An acquisition module 301 is configured to acquire a pressure signal, a displacement signal of a hydraulic pump, and a speed signal of a prime mover within a preset first time period; A judgment module 302 is used to judge whether the pressure signal is greater than a preset first threshold; The timing module 303 is configured to start timing when the judgment module determines that the pressure signal is greater than a preset first threshold; A calculation module 304 is used to calculate the comprehensive signal coefficient of the pressure signal, the displacement signal and the speed signal; The judgment module 302 is further used to judge whether the comprehensive signal coefficient is a steady-state coefficient; The matching module 305 is configured to match the time domain range parameter of the time coefficient corresponding to the timing when the judgment module determines that the comprehensive signal coefficient is a steady-state coefficient; The generating module 306 is used to generate working condition adaptive control parameters according to the pressure signal, the displacement signal, the speed signal and the time domain range parameter, so as to adaptively adjust the power of the hydraulic pump.

[0083] It can be seen that the implementation of the embodiment of the present invention can comprehensively judge the pressure holding state (high pressure + low displacement) by synchronously collecting the three signals of pressure, displacement and speed, avoid misjudgment caused by a single signal (such as high pressure only), and improve the accuracy of identifying the pressure holding condition; quantify the power state through the comprehensive signal coefficient (P×D×N) to provide a reliable basis for control decision-making; start timing when the pressure exceeds the threshold, and judge the continuous pressure holding in combination with the steady-state coefficient; distinguish between instantaneous fluctuations and continuous pressure holding to avoid adjusting the power too early or too late; provide a time dimension basis for staged control and enhance the rationality of system response; trigger adjustment when the comprehensive signal coefficient is steady-state to ensure that power is reduced only when the actual power is in excess, reduce energy waste caused by invalid adjustment, filter noise interference through steady-state judgment, improve the robustness of control logic, and realize the combination of improved accurate working condition identification capability, dynamic response optimization and strengthened energy efficiency control foundation, and combine with the actual application scenarios of hydraulic pumps to comprehensively improve the power control efficiency, accuracy and stability of hydraulic pumps.

[0084] In an embodiment of the present invention, as an optional implementation, the generating module 306 generates the working condition adaptive control parameters based on the pressure signal, the displacement signal, the speed signal, and the time domain range parameter to adaptively adjust the power of the hydraulic pump. Specifically, the following methods are included: Matching a first priority value of the speed signal and a second priority value of the displacement signal according to a time domain range parameter; updating the speed signal according to the first priority value; updating the displacement signal according to the second priority value; According to the pressure signal, the updated speed signal and the updated displacement signal, working condition adaptive control parameters are generated to adaptively adjust the power of the hydraulic pump.

[0085] It can be seen that the implementation of this optional embodiment can allocate priority values ​​of speed and displacement based on time domain range parameters, so that short-term pressure holding gives priority to adjusting displacement (fast response), and long-term pressure holding synchronizes speed adjustment (deep energy saving), balancing response speed and energy efficiency, and avoiding the power recovery delay problem caused by a single speed reduction in competing solutions; by combining the updated speed and displacement to generate control parameters, progressive adjustment of power output is achieved, reducing hydraulic system impact, adapting to changes in load demand, and improving operational smoothness; fully combining dynamic adaptation of adjustment priority and refinement of power matching to improve the accuracy and comprehensiveness of generating working condition adaptive control parameters.

[0086] In this optional embodiment, as an optional implementation, the specific manner in which the generating module 306 matches the first priority value of the speed signal and the second priority value of the displacement signal according to the time domain range parameter includes: The time domain range parameters are divided into multiple level intervals, each level interval corresponds to a set of independent control weight parameters; According to the control weight parameter of the level interval matching, the first priority value of the speed signal and the second priority value of the displacement signal are matched.

[0087] It can be seen that the implementation of this optional embodiment can divide the time domain range into multi-level intervals, match independent weight parameters, support customized control (such as short-term fine-tuning, long-term large-scale power reduction), enhance adaptability to complex working conditions, avoid insufficient response or excessive adjustment caused by fixed adjustment amplitude, and complete hierarchical optimization of control strategies, which is conducive to further improving the accuracy and comprehensiveness of the generation of working condition adaptive control parameters.

[0088] In this optional embodiment, as another optional implementation manner, the above-mentioned time domain range parameter is negatively correlated with the first priority value and the second priority value.

[0089] It can be seen that the implementation of this optional embodiment can achieve precise matching of "deep pressure holding to deep power reduction" through the negative correlation between the time domain range parameters and the priority weight value (the longer the pressure holding, the lower the weight value), optimize energy efficiency, and ensure system stability through smooth changes in weight values, thereby avoiding equipment vibration caused by power mutation.

[0090] In an embodiment of the present invention, as another optional implementation, the above-mentioned preset first time period includes multiple moments, and the specific manner in which the calculation module 304 calculates the comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal includes: For each moment, calculate the moment comprehensive signal coefficient of the pressure signal, displacement signal and speed signal at that moment; Calculate the comprehensive signal coefficients of the pressure signal, displacement signal and speed signal within the preset first time period based on the comprehensive signal coefficients at all times; Optionally, the comprehensive signal coefficient is used to represent the change trajectory of the comprehensive signal coefficient at all times. The specific manner in which the judgment module 302 judges whether the comprehensive signal coefficient is a steady-state coefficient includes: Determine trajectory amplitude range parameters of integrated signal coefficients; It is determined whether the trajectory amplitude range parameter is less than a preset trajectory amplitude range threshold parameter. When the trajectory amplitude range parameter is less than the preset trajectory amplitude range threshold parameter, the comprehensive signal coefficient is determined to be a steady-state coefficient.

[0091] It can be seen that the implementation of this optional embodiment can determine stability through the trajectory amplitude (such as extreme difference) of the comprehensive signal coefficient within a time period, filter out transient interference (such as hydraulic shock), and reduce the false trigger rate; it makes the calculation simple and efficient, and is suitable for real-time processing of embedded controllers.

[0092] In the embodiment of the present invention, as another optional implementation method, Figure 4 As shown, the device also includes: Verification module 307, used to establish a redundant verification mechanism for the pressure signal, displacement signal and speed signal to correct the comprehensive signal coefficient; Optional redundancy check mechanisms include: For any one of the pressure signal, the displacement signal, the speed signal, and related signals thereof, determining a signal trajectory parameter of the signal within a preset third time period; determining whether the signal trajectory parameters match the preset signal trajectory parameters of the signal, and when it is determined that the signal trajectory parameters do not match the preset signal trajectory parameters of the signal, reconstructing the signal trajectory parameters of the signal based on historical averages of remaining signals of the signal; Correcting the comprehensive signal coefficient according to the reconstructed signal trajectory parameter of the signal and the correlation value between the signal and the current working condition; The correlation value is calculated based on the difference between the signal trajectory parameters before and after the signal reconstruction and the preset weight corresponding to the current working condition.

[0093] It can be seen that the implementation of the embodiment of the present invention can further reconstruct abnormal signals (such as using displacement and speed to infer pressure) through a redundant check mechanism, so that the system can still operate in a degraded manner when a single sensor fails, ensuring operation continuity and reducing the risk of control interruption due to signal abnormalities; correcting the comprehensive signal coefficient through the correlation value, reducing the impact of noise or drift signals on working condition judgment, and combining the current working condition weight (such as the high weight in the pressure holding stage) to ensure that the reconstructed signal matches the actual load, further improving the system's fault tolerance and enhancing the reliability of the comprehensive signal.

[0094] In an optional embodiment, if Figure 4 As shown, the device also includes: An analysis module 308 is used to analyze multi-dimensional characteristic parameters of the comprehensive signal coefficients; The analysis module 308 is further used to analyze the steady-state determination result of the comprehensive signal coefficient based on the multi-dimensional characteristic parameters; An adjustment module 309, configured to dynamically adjust an update strategy of a preset first threshold value according to a steady-state determination result; Optionally, the steady-state determination result is used to indicate a historical time-series variation characteristic of the integrated signal coefficient, where the historical time-series variation characteristic includes a fluctuation amplitude and duration of the integrated signal coefficient within a preset second time period. A specific manner in which the adjustment module 309 dynamically adjusts the update strategy of the preset first threshold value based on the steady-state determination result includes: Based on the historical time series variation characteristics of the comprehensive signal coefficient, a dynamic correlation model between the pressure signal and the preset first threshold is established; According to the dynamic correlation model, the target value range of the preset first threshold is updated in real time to match the current power demand of the hydraulic pump.

[0095] It can be seen that the implementation of this optional embodiment can dynamically adjust the threshold based on historical time series characteristics (fluctuation amplitude, duration), so as to adapt to scenarios such as oil temperature changes and component aging, avoid the problem of fixed threshold failure, reduce the frequency of manual calibration, and reduce maintenance costs; continuously optimize the threshold through the dynamic correlation model, improve the control consistency of the system under variable working conditions, extend the service life of the equipment, achieve dynamic adaptability of the threshold, and improve the long-term robustness of the system, and then through the closed-loop logic of multi-dimensional signal coordination, staged dynamic control, and fault-tolerant mechanism protection, systematically solve the defects of competing products such as response delay, energy waste and insufficient reliability, and achieve accurate, efficient and stable control of hydraulic pump power.

[0096] Example 4 See also Figure 5 , Figure 5 This is a structural diagram of another hydraulic pump power control device disclosed in an embodiment of the present invention. The hydraulic pump power control device can be applied to hydraulic pumps, and can also be applied to intelligent devices related to hydraulic pumps, such as but not limited to battery devices, cloud devices, edge computing devices, relay devices, base station devices, urban management devices, and intelligent network devices. The embodiment of the present invention does not limit this. Figure 5 As shown, the hydraulic pump power control device may include: The memory 401 stores executable program codes.

[0097] A processor 402 is coupled to the memory 401 .

[0098] The processor 402 calls the executable program code stored in the memory 401 to execute the steps of the hydraulic pump power control method described in the first embodiment or the second embodiment of the present invention.

[0099] Example 5 An embodiment of the present invention discloses a computer storage medium storing computer instructions. When the computer instructions are called, they are used to execute the steps of the hydraulic pump power control method described in the first embodiment or the second embodiment of the present invention.

[0100] Example 6 An embodiment of the present invention discloses a computer program product, which includes a non-transitory computer storage medium storing a computer program, and the computer program is operable to enable a computer to execute the steps of the hydraulic pump power control method described in the first or second embodiment.

[0101] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Those skilled in the art can understand and implement the present invention without inventive effort.

[0102] Through the detailed description of the above embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by means of hardware. Based on this understanding, the essence of the above technical solution, or the portion that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM), or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium capable of carrying or storing data.

[0103] Finally, it should be noted that the hydraulic pump power control method and device disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hydraulic pump power control method, characterized in that: The method comprises: Acquiring a pressure signal, a displacement signal of the hydraulic pump and a speed signal of the prime mover within a preset first time period; determining whether the pressure signal is greater than a preset first threshold, and starting timing when it is determined that the pressure signal is greater than the preset first threshold; Calculating a comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal; Determining whether the integrated signal coefficient is a steady-state coefficient, and when it is determined that the integrated signal coefficient is the steady-state coefficient, matching the time domain range parameter of the time coefficient corresponding to the timing; According to the pressure signal, the displacement signal, the speed signal and the time domain range parameter, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump.

2. The hydraulic pump power control method according to claim 1, characterized in that: Generating a working condition adaptive control parameter according to the pressure signal, the displacement signal, the speed signal, and the time domain range parameter to adaptively adjust the power of the hydraulic pump includes: matching a first priority value of the speed signal and a second priority value of the displacement signal according to the time domain range parameter; updating the speed signal according to the first priority value; updating the displacement signal according to the second priority value; According to the pressure signal, the updated speed signal and the updated displacement signal, a working condition adaptive control parameter is generated to adaptively adjust the power of the hydraulic pump.

3. The hydraulic pump power control method according to claim 2, characterized in that: Matching the first priority value of the speed signal and the second priority value of the displacement signal according to the time domain range parameter includes: Dividing the time domain range parameters into a plurality of level intervals, each level interval corresponding to a set of independent control weight parameters; The first priority value of the speed signal and the second priority value of the displacement signal are matched according to the control weight parameter of the level interval matching.

4. The hydraulic pump power control method according to claim 2, characterized in that: The time domain range parameter is negatively correlated with the first priority value and the second priority value.

5. The hydraulic pump power control method according to claim 1, characterized in that: The preset first time period includes a plurality of moments, and the calculating of the comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal includes: For each of the moments, calculating the momentary comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal at the moment; Calculating the comprehensive signal coefficients of the pressure signal, the displacement signal, and the speed signal within the preset first time period based on the comprehensive signal coefficients at all the moments; Furthermore, the integrated signal coefficient is used to represent the change trajectory of the integrated signal coefficient at all the moments, and the determining whether the integrated signal coefficient is a steady-state coefficient includes: determining a trajectory amplitude range parameter of the integrated signal coefficient; It is determined whether the trajectory amplitude range parameter is less than a preset trajectory amplitude range threshold parameter. When the trajectory amplitude range parameter is less than the preset trajectory amplitude range threshold parameter, it is determined that the integrated signal coefficient is a steady-state coefficient.

6. The hydraulic pump power control method according to any one of claims 1 to 5, characterized in that: The method further comprises: Analyzing multi-dimensional characteristic parameters of the comprehensive signal coefficients; Analyzing the steady-state determination result of the integrated signal coefficient according to the multi-dimensional characteristic parameters; Dynamically adjusting the updating strategy of the preset first threshold according to the steady-state determination result; Furthermore, the steady-state determination result is used to indicate a historical time-series variation characteristic of the integrated signal coefficient, wherein the historical time-series variation characteristic includes a fluctuation amplitude and a duration of the integrated signal coefficient within a preset second time period; and the updating strategy for dynamically adjusting the preset first threshold value based on the steady-state determination result includes: Establishing a dynamic correlation model between the pressure signal and the preset first threshold based on the historical time series variation characteristics of the comprehensive signal coefficient; According to the dynamic correlation model, the target value range of the preset first threshold is updated in real time to match the current power demand of the hydraulic pump.

7. The hydraulic pump power control method according to claim 1, characterized in that: The method further comprises: Establishing a redundant check mechanism for the pressure signal, the displacement signal, and the speed signal to correct the comprehensive signal coefficient; And, the redundancy check mechanism includes: For any one of the pressure signal, the displacement signal, the speed signal, and associated signals thereof, determining a signal trajectory parameter of the signal within a preset third time period; determining whether the signal trajectory parameter matches a preset signal trajectory parameter of the signal, and when it is determined that the signal trajectory parameter does not match the preset signal trajectory parameter of the signal, reconstructing the signal trajectory parameter of the signal based on a historical mean of remaining signals of the signal; Correcting the comprehensive signal coefficient according to the reconstructed signal trajectory parameter of the signal and the correlation value between the signal and the current working condition; The correlation value is calculated based on the difference between the signal trajectory parameters before and after the signal reconstruction and the preset weight corresponding to the current working condition.

8. A hydraulic pump power control device, characterized in that: The device comprises: an acquisition module, configured to acquire a pressure signal, a displacement signal of the hydraulic pump and a speed signal of the prime mover within a preset first time period; a judgment module, configured to judge whether the pressure signal is greater than a preset first threshold; a timing module, configured to start timing when the judgment module determines that the pressure signal is greater than the preset first threshold; a calculation module, configured to calculate a comprehensive signal coefficient of the pressure signal, the displacement signal, and the speed signal; The judging module is further configured to judge whether the comprehensive signal coefficient is a steady-state coefficient; a matching module, configured to match the time domain range parameter of the time coefficient corresponding to the timing when the judging module judges that the comprehensive signal coefficient is the steady-state coefficient; A generating module is used to generate working condition adaptive control parameters according to the pressure signal, the displacement signal, the speed signal and the time domain range parameter to adaptively adjust the power of the hydraulic pump.

9. A hydraulic pump power control device, characterized in that: The device comprises: a memory storing executable program code; a processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the hydraulic pump power control method according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that The computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the hydraulic pump power control method according to any one of claims 1 to 7.

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