Commercial vehicle electro-hydraulic AMT gearbox clutch control method and device, electronic equipment, storage medium and program product

Abstract

This invention discloses a method, device, electronic device, storage medium, and program product for controlling the clutch of an electro-hydraulic AMT transmission in commercial vehicles. The method includes: acquiring the current actual position of the clutch; calculating the position difference between the preset target position and the current actual position, as well as the target position change rate, based on the position difference, the target position change rate, and a preset limit; determining and jumping to the corresponding control stage based on the position difference, the target position change rate, and a preset limit; the control stages include a fast-action stage, a slow-action stage, a holding stage, and a depressurization stage; after entering the fast-action stage, slow-action stage, holding stage, or depressurization stage, calculating the target current for the corresponding stage based on a preset control strategy, and outputting the target current to the clutch solenoid valve to control the clutch action. This invention achieves high-precision, overshoot-free control of the clutch throughout its entire stroke, effectively improving the smoothness of commercial vehicle operation.

Description

Technical Field

[0001] This invention relates to the field of clutch control technology, and in particular to a clutch control method, device, electronic equipment, storage medium, and program product for an electro-hydraulic AMT transmission for commercial vehicles. Background Technology

[0002] Traditional commercial vehicle Automated Manual Transmission (AMT) clutches generally employ pneumatic control. Due to limitations imposed by gas characteristics and the control method involving varying duty cycles, pneumatically controlled clutches suffer from low control precision and position overshoot, indirectly impacting vehicle smoothness. In contrast, hydraulically controlled AMT clutches offer advantages in terms of high control precision and good position tracking compared to pneumatically controlled clutches. However, in practical applications, temperature variations significantly affect control performance; the same parameters result in drastically different vehicle smoothness at different temperatures. Furthermore, current clutch control strategies utilize PID control. If a hydraulically controlled clutch is controlled using the same pure PID strategy as a pneumatic clutch, the difference in control medium can easily lead to oscillations and overshoot, affecting the smoothness of vehicle start-up and gear shifting. Summary of the Invention

[0003] To address the shortcomings of the aforementioned technologies, this invention provides a method, device, electronic equipment, storage medium, and program product for controlling the clutch of an electro-hydraulic AMT transmission for commercial vehicles, which can effectively improve the smoothness of vehicle operation.

[0004] According to one aspect of the present invention, a method for controlling the clutch of an electro-hydraulic AMT transmission in a commercial vehicle is provided, comprising:

[0005] Collect the current actual position of the clutch;

[0006] Based on the preset target position of the clutch and the actual position at the current moment, the position difference between the preset target position and the actual position at the current moment, as well as the rate of change of the target position, are calculated.

[0007] Based on the position difference, the target position change rate, and the preset limit, the system determines and jumps to the corresponding control stage; the control stage includes a fast action stage, a slow action stage, a hold stage, and a pressure release stage.

[0008] After entering the fast action phase, slow action phase, holding phase, or depressurization phase, the target current for the corresponding phase is calculated based on the preset control strategy, and the target current is output to the clutch solenoid valve to control the clutch action.

[0009] Optionally, the preset limits include a first preset fast motion limit, a second preset fast motion limit, a first preset slow motion limit, a second preset slow motion limit, a first preset hold limit, and a second preset hold limit;

[0010] Based on the position difference, the target position change rate, and the preset limit, determining and jumping to the corresponding control stage includes:

[0011] When the position difference is greater than the first preset fast action limit, or the target position change rate is greater than the second preset fast action limit, the fast action phase is entered.

[0012] When the position difference is greater than the first preset slow motion limit, or the target position change rate is greater than the second preset slow motion limit, the slow motion phase is entered.

[0013] When the position difference is less than or equal to the first preset holding limit, or the target position change rate is less than or equal to the second preset holding limit, the holding phase begins.

[0014] Once the clutch is fully engaged, the depressurization phase begins.

[0015] Optionally, the preset control strategies include a first preset control strategy, a second preset control strategy, and a third preset control strategy;

[0016] After entering the fast action phase, slow action phase, holding phase, or depressurization phase, the target current for the corresponding phase is calculated based on a preset control strategy, and the target current is output to the clutch solenoid valve to control the clutch action, including:

[0017] After entering the fast action phase, based on the first preset control strategy, the large feedforward current and the small feedback current are calibrated and calculated. The large feedforward current and the small feedback current are added together to calculate the target current for the fast action phase. The fast action target current is then output to the clutch solenoid valve to control the clutch action.

[0018] Alternatively, after entering the slow-motion stage, based on the second preset control strategy, the small feedforward current and the large feedback current are calibrated and calculated. The small feedforward current and the large feedback current are added together to calculate the target current for the slow-motion stage, and the target current for the slow-motion stage is output to the clutch solenoid valve to control the clutch action.

[0019] Alternatively, after entering the holding phase, the cutoff current and small feedback current are calibrated and calculated based on the third preset control strategy. The cutoff current and small feedback current are added together to calculate the target current for the holding phase, and the target current for the holding action is output to the clutch solenoid valve to control the clutch action.

[0020] Alternatively, after entering the depressurization phase, the clutch outputs zero current. This zero current is determined as the target current for the depressurization phase, and the target current for the depressurization phase is output to the clutch solenoid valve to control the clutch operation.

[0021] Optionally, the first preset control strategy is as follows:

[0022] Collect the temperature of the solenoid valve fluid in the clutch;

[0023] Based on the position difference, the target position change rate, and the solenoid valve oil temperature, the large feedforward current is calibrated.

[0024] Based on the position difference, a PID control algorithm is used to calculate the small feedback current;

[0025] The target current for the fast-action phase is calculated by adding the large feedforward current and the small feedback current.

[0026] Optionally, the second preset control strategy is as follows:

[0027] Collect the temperature of the solenoid valve fluid in the clutch;

[0028] Based on the position difference, the target position change rate, and the solenoid valve oil temperature, the small feedforward current is calibrated.

[0029] The large feedback current is calculated using a PID control algorithm based on the position difference.

[0030] The target current for the slow-motion phase is calculated by adding the small feedforward current to the large feedback current.

[0031] Optionally, the third preset control strategy is as follows:

[0032] Collect the temperature of the solenoid valve fluid in the clutch;

[0033] Based on the position difference, the rate of change of the target position, and the oil temperature of the solenoid valve, the cutoff current is calibrated.

[0034] Based on the position difference, a PID control algorithm is used to calculate the small feedback current;

[0035] The target current for the holding phase is calculated by adding the cutoff current to the small feedback current.

[0036] According to another aspect of the present invention, a clutch control device for an electro-hydraulic AMT transmission in a commercial vehicle is provided, comprising:

[0037] The acquisition module is used to acquire the current actual position of the clutch.

[0038] The calculation module is used to calculate the position difference between the preset target position and the current actual position, as well as the target position change rate, based on the preset target position of the clutch and the current actual position.

[0039] The judgment module is used to determine and jump to the corresponding control stage based on the position difference, the target position change rate, and the preset limit; the control stage includes a fast action stage, a slow action stage, a hold stage, and a pressure release stage;

[0040] The control module is used to calculate the target current for the corresponding stage based on a preset control strategy after entering the fast action stage, slow action stage, holding stage or depressurization stage, and output the target current to the clutch solenoid valve to control the clutch action.

[0041] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0042] At least one processor; and

[0043] A memory communicatively connected to the at least one processor; wherein,

[0044] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any embodiment of the present invention.

[0045] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any embodiment of the present invention.

[0046] According to another aspect of the present invention, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any embodiment of the present invention.

[0047] The technical solution provided by this invention completely decouples the control requirements of different action stages of the clutch through a phased differentiated preset control strategy. At the same time, it introduces temperature parameters throughout the entire process to achieve adaptive compensation under all working conditions. This completely solves the technical problems of easy oscillation and overshoot in pure PID control, poor temperature adaptability of electro-hydraulic control, and low precision of pneumatic AMT control in the prior art. It achieves high response, high precision, and no overshoot control of the clutch throughout the entire stroke, effectively improving the smoothness of commercial vehicle driving.

[0048] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 A flowchart of a clutch control method for an electro-hydraulic AMT transmission in a commercial vehicle, provided as an embodiment of the present invention;

[0051] Figure 2 A flowchart of another commercial vehicle electro-hydraulic AMT transmission clutch control method provided in an embodiment of the present invention;

[0052] Figure 3 A flowchart of another commercial vehicle electro-hydraulic AMT transmission clutch control method provided in this embodiment of the invention;

[0053] Figure 4 A schematic diagram of the structure of a commercial vehicle electro-hydraulic AMT transmission clutch control device provided in an embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the electronic device used in a commercial vehicle electro-hydraulic AMT transmission clutch control method according to an embodiment of the present invention. Detailed Implementation

[0055] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0056] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0057] Figure 1 The flowchart illustrates a method for controlling the clutch of an electro-hydraulic AMT transmission in a commercial vehicle, as provided in this embodiment of the invention. This method can be executed by a clutch control device for an electro-hydraulic AMT transmission in a commercial vehicle. This device can be implemented in hardware and / or software and can be configured in any electronic device with communication capabilities. See also... Figure 1 The method includes:

[0058] S110, Collect the current actual position of the clutch.

[0059] Specifically, the actual position of the clutch at the current moment can be collected using a displacement sensor.

[0060] S120. Based on the preset target position of the clutch and the actual position at the current moment, calculate the position difference between the preset target position and the actual position at the current moment, as well as the target position change rate.

[0061] The preset target position can be pre-set based on empirical values. The target position change rate refers to the magnitude of change in the preset target position of the clutch per unit time.

[0062] Specifically, the position difference between the preset target position and the current actual position can be obtained by subtracting the preset target position from the current actual position; the rate of change of the target position can be obtained by dividing the difference between the target position at the current time and the target position at the previous time by the time difference between the current time and the previous time.

[0063] S130. Based on the position difference, the target position change rate, and the preset limit, determine and jump to the corresponding control stage; the control stage includes fast action stage, slow action stage, hold stage, and pressure release stage.

[0064] Among them, the preset limits can be set in advance based on empirical values. The preset limits are divided into two categories: one is the limit corresponding to the position difference, and the other is the limit corresponding to the rate of change of the target position.

[0065] Specifically, the position difference is compared with its corresponding limit to obtain the first comparison result; the target position change rate is compared with its corresponding limit to obtain the second comparison result; based on either of these two comparison results, the system determines and jumps to the corresponding control stage. For example, when the position difference is greater than its corresponding fast-action limit, or when the target position change rate is greater than its corresponding fast-action limit, the system enters the fast-action stage; conversely, when the position difference is greater than its corresponding slow-motion limit, or when the target position change rate is greater than its corresponding slow-motion limit, the system enters the slow-motion stage.

[0066] S140 After entering the fast action stage, slow action stage, holding stage or depressurization stage, the target current of the corresponding stage is calculated based on the preset control strategy, and the target current is output to the clutch solenoid valve to control the clutch action.

[0067] The preset control strategy is designed specifically for the electro-hydraulic drive characteristics of the clutch in commercial vehicle electro-hydraulic AMT transmissions. It addresses industry pain points such as low control precision in traditional pneumatic AMTs, susceptibility to oscillation and overshoot in pure proportional-integral-derivative (PID) control, and poor temperature adaptability. It is a complete closed-loop control rule system pre-designed, calibrated, and solidified. Taking the position difference between the preset target position and the current actual position of the clutch, and the target position change rate as inputs, it uses a core architecture of phased differentiated scheduling, feedforward + feedback composite control, and full temperature adaptive compensation to cover the clutch's full stroke and all operating conditions. Ultimately, it outputs a precise target drive current for the solenoid valve, achieving high-response, overshoot-free, and high-precision clutch position control.

[0068] Optionally, the preset control strategies include a first preset control strategy, a second preset control strategy, and a third preset control strategy;

[0069] Specifically, after entering the fast-action phase, based on the first preset control strategy, the large feedforward current and the small feedback current are calibrated and calculated. The large feedforward current and the small feedback current are added together to calculate the target current for the fast-action phase, and the fast-action target current is output to the clutch solenoid valve to control the clutch action.

[0070] Alternatively, after entering the slow-motion stage, based on the second preset control strategy, the small feedforward current and the large feedback current are calibrated and calculated. The small feedforward current and the large feedback current are added together to calculate the target current for the slow-motion stage, and the target current for the slow-motion stage is output to the clutch solenoid valve to control the clutch action.

[0071] Alternatively, after entering the holding phase, the cutoff current and small feedback current are calibrated and calculated based on the third preset control strategy. The cutoff current and small feedback current are added together to calculate the target current for the holding phase, and the target current for the holding action is output to the clutch solenoid valve to control the clutch action.

[0072] Alternatively, after entering the depressurization phase, the clutch outputs zero current. This zero current is then set as the target current for the depressurization phase, and the target current for the depressurization phase is output to the clutch solenoid valve to control the clutch operation.

[0073] The first preset control strategy is as follows:

[0074] The solenoid valve oil temperature of the clutch is collected; based on the position difference, the target position change rate, and the solenoid valve oil temperature, the large feedforward current is calibrated; based on the position difference, the small feedback current is calculated using a PID control algorithm; the large feedforward current and the small feedback current are added together to calculate the target current for the fast-action phase.

[0075] The second preset control strategy is as follows:

[0076] The solenoid valve oil temperature of the clutch is collected; based on the position difference, the target position change rate, and the solenoid valve oil temperature, the small feedforward current is calibrated; based on the position difference, the large feedback current is calculated using a PID control algorithm; the small feedforward current and the large feedback current are added together to calculate the target current for the slow-motion stage.

[0077] The third preset control strategy is as follows:

[0078] The solenoid valve oil temperature of the clutch is collected; the cut-off current is calibrated based on the position difference, the target position change rate, and the solenoid valve oil temperature; the small feedback current is calculated using a PID control algorithm based on the position difference; the cut-off current and the small feedback current are added together to calculate the target current for the holding phase.

[0079] The technical solution provided by this invention completely decouples the control requirements of different action stages of the clutch through a phased differentiated preset control strategy. At the same time, it introduces temperature parameters throughout the entire process to achieve adaptive compensation under all working conditions. This completely solves the technical problems of easy oscillation and overshoot in pure PID control, poor temperature adaptability of electro-hydraulic control, and low precision of pneumatic AMT control in the prior art. It achieves high response, high precision, and no overshoot control of the clutch throughout the entire stroke, effectively improving the smoothness of commercial vehicle driving.

[0080] Figure 2This is a flowchart illustrating another method for controlling the clutch of an electro-hydraulic AMT transmission in a commercial vehicle, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. Optionally, the preset limits include a first preset fast-action limit, a second preset fast-action limit, a first preset slow-action limit, a second preset slow-action limit, a first preset holding limit, and a second preset holding limit. See also... Figure 2 The method includes:

[0081] S210, Collect the current actual position of the clutch.

[0082] S220. Based on the preset target position of the clutch and the actual position at the current moment, calculate the position difference between the preset target position and the actual position at the current moment, as well as the target position change rate.

[0083] S230. Determine whether the position difference is greater than the first preset fast action limit or whether the target position change rate is greater than the second preset fast action limit. If the position difference is greater than the first preset fast action limit or the target position change rate is greater than the second preset fast action limit, execute S240. If not, execute S250.

[0084] The first preset fast action limit and the second preset fast action limit are both preset based on empirical values.

[0085] S240, Entering the fast-motion phase.

[0086] S250. Determine whether the position difference is greater than the first preset slow motion limit or whether the target position change rate is greater than the second preset slow motion limit. If the position difference is greater than the first preset slow motion limit or the target position change rate is greater than the second preset slow motion limit, execute S260. If not, execute S270.

[0087] The first preset slow motion limit and the second preset slow motion limit are both preset based on empirical values.

[0088] S260, Entering slow motion phase.

[0089] S270. Determine whether the position difference is greater than the first preset holding limit or whether the target position change rate is greater than the second preset holding limit. If the position difference is greater than the first preset holding limit or the target position change rate is greater than the second preset holding limit, execute S280. If not, execute S290.

[0090] The first preset holding limit and the second preset holding limit are both preset based on empirical values.

[0091] S280, Entering the holding phase.

[0092] S290. Determine whether the clutch action command has ended; if yes, execute S291; if no, execute S230.

[0093] S291, Entering the depressurization phase.

[0094] Figure 3 This is a flowchart illustrating another method for controlling the clutch of an electro-hydraulic AMT transmission in a commercial vehicle, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. Optionally, the preset control strategy includes a first preset control strategy, a second preset control strategy, and a third preset control strategy; see [link to documentation]. Figure 3 The method includes:

[0095] S310, Collect the current actual position of the clutch.

[0096] S320. Based on the preset target position of the clutch and the actual position at the current moment, calculate the position difference between the preset target position and the actual position at the current moment, as well as the target position change rate.

[0097] S330: Based on the position difference, the target position change rate, and the preset limit, determine and jump to the corresponding control stage.

[0098] S340. After entering the fast action phase, based on the first preset control strategy, the large feedforward current and the small feedback current are calibrated and calculated. The large feedforward current and the small feedback current are added together to calculate the target current for the fast action phase. The fast action target current is then output to the clutch solenoid valve to control the clutch action.

[0099] The first preset control strategy is as follows:

[0100] The solenoid valve oil temperature of the clutch is collected; based on the position difference, the target position change rate, and the solenoid valve oil temperature, the large feedforward current is calibrated; based on the position difference, the small feedback current is calculated using a PID control algorithm; the large feedforward current and the small feedback current are added together to calculate the target current for the fast-action phase.

[0101] Alternatively, after entering the slow-motion stage in S350, the small feedforward current and large feedback current are calibrated and calculated based on the second preset control strategy. The small feedforward current and large feedback current are added together to calculate the target current for the slow-motion stage, and the target current for the slow-motion stage is output to the clutch solenoid valve to control the clutch action.

[0102] The second preset control strategy is as follows:

[0103] The solenoid valve oil temperature of the clutch is collected; based on the position difference, the target position change rate, and the solenoid valve oil temperature, the small feedforward current is calibrated; based on the position difference, the large feedback current is calculated using a PID control algorithm; the small feedforward current and the large feedback current are added together to calculate the target current for the slow-motion stage.

[0104] Alternatively, after entering the holding phase, S360, based on the third preset control strategy, calibrates and calculates the cutoff current and small feedback current, adds the cutoff current and small feedback current to calculate the target current for the holding phase, and outputs the target current for the holding action to the clutch solenoid valve to control the clutch action.

[0105] The third preset control strategy is as follows:

[0106] The solenoid valve oil temperature of the clutch is collected; the cut-off current is calibrated based on the position difference, the target position change rate, and the solenoid valve oil temperature; the small feedback current is calculated using a PID control algorithm based on the position difference; the cut-off current and the small feedback current are added together to calculate the target current for the holding phase.

[0107] Alternatively, S370, after entering the depressurization stage, the clutch outputs zero current. This zero current is determined as the target current for the depressurization stage, and the target current for the depressurization stage is output to the clutch solenoid valve to control the clutch action.

[0108] It should be noted that in the embodiments of the present invention, the terms "large" and "small" refer to the proportion of the current in the calculated target current. For example, if the feedforward current is greater than the feedback current in the calculated fast-acting target current, the feedforward current is named "large feedforward current" and the feedback current is named "small feedback current".

[0109] The technical solution provided by this invention divides the control phase into four stages: fast action, slow action, holding, and depressurization. The division is based on whether the position difference between the clutch's preset target position and its current actual position exceeds a corresponding preset limit, or whether the clutch's target position change rate exceeds a corresponding preset limit. The first three stages employ a feedforward plus feedback control algorithm. The feedforward algorithm of this invention is based on the position difference between the clutch's preset target position and its current actual position, as well as the target position change rate, and incorporates the solenoid valve oil temperature as a key influencing parameter. It calibrates the solenoid valve target control current under different parameters, serving as the feedforward output. The feedback algorithm is based on the position difference between the clutch's preset target position and its current actual position, using PID control to calculate the solenoid valve target control current, which serves as the feedback output. The two are added together as the final input current, enabling control of the clutch. This allows the clutch to dynamically adjust in real-time under different states, ensuring precise position control during clutch operation and achieving good clutch following performance.

[0110] Figure 4 A schematic diagram of a commercial vehicle electro-hydraulic AMT transmission clutch control device provided in an embodiment of the present invention is shown below. Figure 4 The device includes: a data acquisition module 410, a calculation module 420, a judgment module 430, and a control module 440.

[0111] The acquisition module 410 is used to acquire the current actual position of the clutch.

[0112] The calculation module 420 is used to calculate the position difference between the preset target position and the current actual position, as well as the target position change rate, based on the preset target position of the clutch and the current actual position.

[0113] The judgment module 430 is used to judge and jump to the corresponding control stage based on the position difference, the target position change rate and the preset limit; the control stage includes fast action stage, slow action stage, holding stage and pressure release stage.

[0114] The control module 440 is used to calculate the target current for the corresponding stage based on a preset control strategy after entering the fast action stage, slow action stage, holding stage or depressurization stage, and output the target current to the clutch solenoid valve to control the clutch action.

[0115] The commercial vehicle electro-hydraulic AMT transmission clutch control device provided in this embodiment of the invention can execute the commercial vehicle electro-hydraulic AMT transmission clutch control method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0116] Figure 5This is a schematic diagram of the electronic device used in a commercial vehicle electro-hydraulic AMT transmission clutch control method according to an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0117] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 and a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded into the RAM 13 from storage unit 18. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, the ROM 12, and the RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0118] Multiple components in electronic device 10 are connected to input / output I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of monitors, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0119] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as a clutch control method for an electro-hydraulic AMT transmission in a commercial vehicle.

[0120] In some embodiments, a commercial vehicle electro-hydraulic AMT transmission clutch control method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via read-only memory ROM 12 and / or communication unit 19. When the computer program is loaded into random access memory RAM 13 and executed by processor 11, one or more steps of the commercial vehicle electro-hydraulic AMT transmission clutch control method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured in any other suitable manner to perform a commercial vehicle electro-hydraulic AMT transmission clutch control method.

[0121] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0122] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0123] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0124] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device for displaying information to a user; and a keyboard and pointing device through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with a user; for example, feedback provided to the user can be any form of sensory feedback; and input from the user can be received in any form.

[0125] The systems and technologies described herein can be implemented in computing systems that include backend components, middleware components, or frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium. Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0126] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0127] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0128] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling the clutch of an electro-hydraulic AMT transmission for commercial vehicles, characterized in that, include: Collect the current actual position of the clutch; Based on the preset target position of the clutch and the actual position at the current moment, the position difference between the preset target position and the actual position at the current moment, as well as the rate of change of the target position, are calculated. Based on the position difference, the target position change rate, and the preset limit, the system determines and jumps to the corresponding control stage; the control stage includes a fast action stage, a slow action stage, a hold stage, and a pressure release stage. After entering the fast action phase, slow action phase, holding phase, or depressurization phase, the target current for the corresponding phase is calculated based on the preset control strategy, and the target current is output to the clutch solenoid valve to control the clutch action.

2. The method according to claim 1, characterized in that, The preset limits include a first preset fast motion limit, a second preset fast motion limit, a first preset slow motion limit, a second preset slow motion limit, a first preset hold limit, and a second preset hold limit; Based on the position difference, the target position change rate, and the preset limit, determining and jumping to the corresponding control stage includes: When the position difference is greater than the first preset fast action limit, or the target position change rate is greater than the second preset fast action limit, the fast action phase is entered. When the position difference is greater than the first preset slow motion limit, or the target position change rate is greater than the second preset slow motion limit, the slow motion phase is entered. When the position difference is less than or equal to the first preset holding limit, or the target position change rate is less than or equal to the second preset holding limit, the holding phase begins. Once the clutch is fully engaged, the depressurization phase begins.

3. The method according to claim 2, characterized in that, The preset control strategies include a first preset control strategy, a second preset control strategy, and a third preset control strategy; After entering the fast action phase, slow action phase, holding phase, or depressurization phase, the target current for the corresponding phase is calculated based on a preset control strategy, and the target current is output to the clutch solenoid valve to control the clutch action, including: After entering the fast action phase, based on the first preset control strategy, the large feedforward current and the small feedback current are calibrated and calculated. The large feedforward current and the small feedback current are added together to calculate the target current for the fast action phase. The fast action target current is then output to the clutch solenoid valve to control the clutch action. Alternatively, after entering the slow-motion stage, based on the second preset control strategy, the small feedforward current and the large feedback current are calibrated and calculated. The small feedforward current and the large feedback current are added together to calculate the target current for the slow-motion stage, and the target current for the slow-motion stage is output to the clutch solenoid valve to control the clutch action. Alternatively, after entering the holding phase, the cutoff current and small feedback current are calibrated and calculated based on the third preset control strategy. The cutoff current and small feedback current are added together to calculate the target current for the holding phase, and the target current for the holding action is output to the clutch solenoid valve to control the clutch action. Alternatively, after entering the depressurization phase, the clutch outputs zero current. This zero current is determined as the target current for the depressurization phase, and the target current for the depressurization phase is output to the clutch solenoid valve to control the clutch operation.

4. The method according to claim 3, characterized in that, The first preset control strategy is as follows: Collect the temperature of the solenoid valve fluid in the clutch; Based on the position difference, the target position change rate, and the solenoid valve oil temperature, the large feedforward current is calibrated. Based on the position difference, a PID control algorithm is used to calculate the small feedback current; The target current for the fast-action phase is calculated by adding the large feedforward current and the small feedback current.

5. The method according to claim 3, characterized in that, The second preset control strategy is as follows: Collect the temperature of the solenoid valve fluid in the clutch; Based on the position difference, the target position change rate, and the solenoid valve oil temperature, the small feedforward current is calibrated. The large feedback current is calculated using a PID control algorithm based on the position difference. The target current for the slow-motion phase is calculated by adding the small feedforward current to the large feedback current.

6. The method according to claim 3, characterized in that, The third preset control strategy is as follows: Collect the temperature of the solenoid valve fluid in the clutch; Based on the position difference, the rate of change of the target position, and the oil temperature of the solenoid valve, the cutoff current is calibrated. Based on the position difference, a PID control algorithm is used to calculate the small feedback current; The target current for the holding phase is calculated by adding the cutoff current to the small feedback current.

7. A clutch control device for an electro-hydraulic AMT transmission in a commercial vehicle, characterized in that, include: The acquisition module is used to acquire the current actual position of the clutch. The calculation module is used to calculate the position difference between the preset target position and the current actual position, as well as the target position change rate, based on the preset target position of the clutch and the current actual position. The judgment module is used to determine and jump to the corresponding control stage based on the position difference, the target position change rate and the preset limit. The control phase includes a fast action phase, a slow action phase, a hold phase, and a depressurization phase; The control module is used to calculate the target current for the corresponding stage based on a preset control strategy after entering the fast action stage, slow action stage, holding stage or depressurization stage, and output the target current to the clutch solenoid valve to control the clutch action.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the commercial vehicle electro-hydraulic AMT transmission clutch control method according to any one of claims 1-6.

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