Method and system for automatically adjusting oil temperature of sliding table of multi-comprehensive vibration test system

Abstract

The invention discloses a multi-comprehensive vibration test system sliding table oil liquid temperature automatic adjusting method and system, and the method comprises the steps: firstly arranging a temperature sensor at a sliding table oil liquid return port, and setting the upper and lower limits of the oil liquid suitable working temperature and the suitable working temperature; dividing the ideal temperature function into intervals according to a set period after the experiment is started, calculating the temperature integral of each interval, judging the interval type according to the relation between the temperature integral and the upper and lower limits of the appropriate temperature integral and the appropriate temperature integral, and dynamically adjusting the power of the heating or cooling device; and meanwhile, the heating or cooling device is subjected to secondary correction in combination with the actually measured temperature and the temperature deviation threshold value of the temperature sensor. According to the invention, the ideal temperature function in the experiment cavity is utilized to pre-judge the change trend of the oil liquid of the sliding table in advance and perform dynamic adjustment, the oil liquid temperature can be accurately controlled within a suitable working range, and the adverse effect of the test temperature change on the operation stability and precision of the sliding table is eliminated.

Description

Technical Field

[0001] This invention relates to the field of vibration testing equipment technology, specifically to an automatic adjustment method and system for the oil temperature of a slide table in a multi-integrated vibration testing system. Background Technology

[0002] Multi-stage vibration testing systems are widely used in aerospace, automotive manufacturing, and electronic equipment industries to simulate the vibration tolerance of products under complex environments. The operational stability of its core working component, the horizontal slide, directly determines the reliability of the test data. During slide operation, the oil serves as both a lubricant and a transmission medium, and its temperature changes significantly affect oil viscosity, lubrication effectiveness, and equipment transmission accuracy: excessively high temperatures can lead to oil deterioration, lubrication failure, and accelerated component wear; excessively low temperatures increase oil flow resistance and affect the slide's operational flexibility.

[0003] Existing vibration testing systems often employ a single threshold triggering method for slide table oil temperature control, lacking the ability to predict temperature change trends and precisely control the temperature in segments. Furthermore, they lack a dual calibration mechanism combining ideal temperature functions and measured feedback, resulting in issues such as temperature regulation lag, poor regulation effectiveness, and low adaptability. When the ambient temperature of a multi-stage vibration testing system fluctuates significantly or the testing conditions are complex, traditional control methods struggle to maintain the oil within a suitable operating temperature range, easily leading to test interruptions or distorted test data, and failing to meet the demands of high-precision, long-term continuous vibration testing. Summary of the Invention

[0004] To overcome the above-mentioned technical deficiencies, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a method for automatically adjusting the slide oil temperature of a multi-stage vibration test system, the method comprising the following steps:

[0006] Step S1: Before starting the multi-integrated vibration test system experiment, a temperature sensor is placed at the oil return port of the vibration table to determine the oil level.

[0007] Upper limit of suitable operating temperature T 上 and lower limit value T 下 And at that upper limit value T 上 and lower limit value T 下 Select a suitable operating temperature within the range, and preset the corresponding upper limit, lower limit, and integral value of the suitable temperature.

[0008] Step S2: Start the multi-sensory vibration test system experiment, and define the test with time t as the independent variable and temperature T as the dependent variable.

[0009] The ideal temperature function T(t) of the experimental chamber of the test system is calculated; the time Δt1 is set as one period, the ideal temperature function T(t) is divided into several intervals according to the set period, and the temperature integral of each interval is calculated; the temperature integral of each interval is compared with the upper limit of suitable temperature integral, the lower limit of suitable temperature integral and the suitable temperature integral preset in step S1 to determine the interval type, and the power of the horizontal slide temperature adjustment device is dynamically adjusted according to the interval type.

[0010] Step S3: Set time Δt2 as one cycle, and record the measured oil temperature T detected by the temperature sensor within each cycle. i Set the temperature deviation threshold λ ΔT ; Utilizing the measured oil temperature T in each cycle i Temperature deviation threshold λ ΔT Temperature correction and compensation are performed on the slide oil.

[0011] In this way, the embodiment of this application constructs an oil temperature regulation logic of preset parameters before the test, integral feedforward control during the test, and actual measurement feedback correction after the test, which can keep the oil stable in a suitable working range, avoid abnormal oil temperature from affecting the vibration test accuracy, and ensure the continuous and stable operation of the slide table.

[0012] In some embodiments of the first aspect, in step S2, the temperature integral A of the nth interval... n The calculation formula is:

[0013]

[0014] Where t is time (min); T is temperature (°C); the ideal temperature function T(t) is divided into several intervals with Δt1 as one period, where the start time of the nth interval is (n-1)·Δt1 and the end time is n·Δt1, n = 1, 2, ...

[0015] In this way, by using the integral calculation formula for temperature over a period of time, the cumulative effect of temperature in each time period can be quantified, the accuracy of temperature range determination can be improved, and objective data can be provided for temperature control power adjustment.

[0016] In some embodiments of the first aspect, the upper limit of the suitable temperature integral in step S2 is defined as A. max A max The calculation formula is:

[0017] A max =T 上 ·Δt1

[0018] Where Δt1 is the time of one period; T 上 This is the upper limit of the suitable operating temperature.

[0019] In this way, the formula for determining the integral upper limit based on the upper limit of oil temperature and cycle duration is simple in logic, requires little computation, is easy to implement in hardware, and can quickly generate the integral judgment upper limit, thereby improving the efficiency of interval division.

[0020] In some embodiments of the first aspect, the upper limit of the suitable temperature integral in step S2 is defined as A. min A min The calculation formula is:

[0021] A min =T 下 ·Δt1

[0022] Where Δt1 is the time of one period; T 下 This is the lower limit of the suitable operating temperature.

[0023] In this way, the lower limit threshold of the integral is calculated based on the lower limit of oil temperature, forming a standardized judgment boundary. This, in conjunction with the upper limit of the integral, makes the identification of interval types more accurate and ensures the rigor of the control logic.

[0024] In some embodiments of the first aspect, the suitable temperature integral in step S2 is defined as A. 佳 A 佳 The calculation formula is:

[0025] A 佳 =T 佳 ·Δt1

[0026] Where Δt1 is the time of one period; T 佳 The appropriate operating temperature value.

[0027] In this way, the integral of the appropriate temperature is calculated based on the appropriate operating temperature, providing a benchmark for power regulation, ensuring that the temperature control regulation always matches the optimal oil temperature target, and improving control accuracy.

[0028] In some embodiments of the first aspect, according to A n A max A min The values ​​divide each interval into a safe interval, a cooling interval, and a heating interval:

[0029] When condition A is satisfied min ≤A n ≤A max If the specified range is a safe range, then no temperature compensation will be performed within that range.

[0030] When condition A is satisfied n >A max If the specified range is the cooling range, then the cooling power of the horizontal slide temperature regulating device in this range will be set as follows:

[0031]

[0032] in: The maximum cooling power of the horizontal slide temperature control device is given by the calculated power of the horizontal slide temperature control device. Then set the cooling power of the horizontal slide temperature regulating device to [value]. ;

[0033] When condition A is satisfied n <A min If the specified range is the heating range, then the heating power of the horizontal slide temperature regulating device within this range will be set as follows:

[0034]

[0035] in: The maximum heating power of the horizontal slide table temperature control device, if the calculated power of the horizontal slide table temperature control device... Then set the power of the horizontal slide heating device to ;

[0036] In this way, the temperature control range is divided according to the integral value and matched with the corresponding power algorithm to realize the dynamic output of temperature control power on demand, avoiding overheating and ineffective energy consumption, and taking into account both oil protection and temperature control response speed.

[0037] In some embodiments of the first aspect, the specific process of step S3 is as follows: taking time Δt2 as one period, and denoting the measured temperature of the temperature sensor in the i-th period as T. i Let λ = i = 1, 2, ... ΔT λ is the temperature deviation threshold. ΔT >0; Temperature T measured using a temperature sensor i and temperature deviation threshold λ ΔT Temperature correction is performed on the oil; the specific method for secondary correction is as follows:

[0038] When condition -λ is satisfied ΔT ≤T i T 佳 ≤λ ΔT If so, then no temperature correction is needed in the (i+1)th cycle;

[0039] When condition T is satisfied i T 佳 >λ ΔT Then, at the beginning of the (i+1)th cycle, the cooling power of the horizontal slide temperature regulating device will be additionally increased. ;

[0040] When condition T is satisfied i T 佳<-λ ΔT Then, at the beginning of the (i+1)th cycle, the heating power of the horizontal slide temperature regulating device will be increased by an additional amount. .

[0041] In this way, by using the measured temperature and deviation threshold for secondary feedback correction, the feedforward adjustment error is compensated, forming a closed-loop control, further reducing the oil temperature deviation, and ensuring high-precision and stable oil temperature throughout the test.

[0042] In some embodiments of the first aspect, the upper limit of the suitable operating temperature T of the oil is... 上 The value range is 40℃-50℃; the lower limit of the suitable working temperature of the oil is T. 下 The value range is 5℃-10℃; the suitable operating temperature T 佳 The value range is 30℃-35℃;

[0043] The period Δt1 ranges from 5 min to 8 min; the period Δt2 ranges from 15 min to 20 min; the temperature deviation threshold λ ΔT The value range is 3 min to 5 min.

[0044] In this way, by limiting the reasonable range of values ​​for parameters such as temperature and period, the method closely matches the actual working conditions of multi-integrated vibration tests, ensuring the parameters are highly versatile and easy to implement, thus guaranteeing the practicality and reliability of the method.

[0045] Secondly, this application provides an automatic temperature control system for the slide oil of a multi-integrated vibration test system. The system includes: a test chamber, a horizontal slide, an oil separator, a hydrostatic guide rail, a temperature sensor and a temperature control device, and a control unit.

[0046] A horizontal slide is located inside the experimental chamber;

[0047] The hydrostatic guide rail is located between the horizontal slide table and the experimental chamber; its fixed part is connected to the experimental chamber, and its moving part is connected to the horizontal slide table, providing motion support and guidance for the horizontal slide table.

[0048] An oil-separating membrane is placed around the periphery of the hydrostatic guide rail. The edges of the oil-separating membrane are sealed to the horizontal slide and the experimental chamber, respectively, to divide the experimental chamber into two isolated spaces.

[0049] The temperature sensor is installed at the oil return port of the horizontal slide to detect the real-time temperature of the slide oil and transmit the detected temperature signal to the control unit.

[0050] The temperature control device includes a heating device and a cooling device, which are arranged on the inner walls of the experimental chamber located below the horizontal slide. They are used to receive control signals from the control unit and to heat or cool the oil in the horizontal slide.

[0051] The control unit is electrically connected to the temperature sensor and the temperature regulation device. It integrates the automatic oil temperature regulation method to receive the temperature signal transmitted by the temperature sensor, calculate the real-time regulation power, and send the corresponding control signal to the heating device or cooling device.

[0052] In this way, a hardware system matching the adjustment method is built, with temperature sensors, temperature adjustment devices and control units working together to achieve automatic oil temperature detection, zoned control and dual compensation, with a high degree of automation, and adapted to the continuous operation requirements of the test system.

[0053] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention uses the ideal temperature function in the experimental chamber to predict the trend of the slide oil change in advance and make dynamic adjustments, which can accurately control the oil temperature within the appropriate working range and eliminate the adverse effects of the test temperature change on the stability and accuracy of the slide operation. Attached Figure Description

[0054] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0055] Figure 1 A cross-sectional view of a multi-integrated vibration test system provided for an embodiment of this application.

[0056] Figure 2 A schematic diagram illustrating the combination of the automatic adjustment method for slide oil temperature in a multi-integrated vibration test system provided in the embodiments of this application with the system.

[0057] Figure 3 A flowchart of an automatic adjustment method for the oil temperature of a horizontal slide provided in an embodiment of this application.

[0058] Figure 4 This is a schematic diagram of interval division provided for an embodiment of this application.

[0059] Figure label:

[0060] 1. Experimental chamber; 2. Horizontal slide; 3. Oil separator; 4. Hydrostatic guide rail; 5. Temperature sensor; 6. Temperature control device. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0062] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0063] In the description of this invention, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of this invention.

[0064] Please see Figure 1 , Figure 1 This is a cross-sectional view of a multi-integrated vibration test system provided in an embodiment of this application. The embodiment of this application provides an automatic temperature control system for the slide oil of a multi-integrated vibration test system. The system includes: an experimental chamber 1, a horizontal slide 2, an oil separator 3, a hydrostatic guide rail 4, a temperature sensor 5, a temperature control device 6, and a control unit.

[0065] The horizontal slide 2 is located inside the experimental chamber 1.

[0066] The hydrostatic guide rail 4 is located between the horizontal slide 2 and the experimental chamber 1; its fixed part is connected to the experimental chamber 1, and its moving part is connected to the horizontal slide 2, providing motion support and guidance for the horizontal slide 2.

[0067] An oil-separating membrane 3 is placed around the periphery of the hydrostatic guide rail 4. The edges of the oil-separating membrane 3 are sealed to the horizontal slide 2 and the experimental chamber 1, respectively, to divide the experimental chamber 1 into two isolated spaces, thereby protecting the hydrostatic guide rail 4 and ensuring its stable operation.

[0068] Temperature sensor 5 is installed at the oil return port of horizontal slide 2 to detect the real-time temperature of the slide oil and transmit the detected temperature signal to the control unit.

[0069] The temperature regulation device 6 includes a heating device and a cooling device, which are arranged on the inner walls of the experimental chamber 1 to receive control signals from the control unit and regulate the heating or cooling of the oil in the horizontal slide 2.

[0070] For example, the heating device is a heating tube or a resistance wire; the cooling device is a condenser tube, an air-cooled unit, or a water-cooled unit.

[0071] The control unit is electrically connected to the temperature sensor 5 and the temperature regulating device 6. It integrates the automatic oil temperature regulation method to receive the temperature signal transmitted by the temperature sensor, calculate the real-time regulation power, and send the corresponding control signal to the heating device or cooling device.

[0072] For example, the control unit includes, but is not limited to, a controller.

[0073] Please see Figure 1 , Figure 2 and Figure 3 , Figure 2 A schematic diagram illustrating the integration of the automatic adjustment method for slide oil temperature in a multi-stage vibration test system provided in this application with the system. Figure 3 A flowchart illustrating an automatic adjustment method for the oil temperature of a horizontal slide table provided in an embodiment of this application. Based on the aforementioned automatic adjustment system for the oil temperature of a slide table in a comprehensive vibration test system, this application also provides an automatic adjustment method for the oil temperature of a slide table in a multi-comprehensive vibration test system, which is applied to the aforementioned system. The specific steps of this method are as follows:

[0074] Step S1: Before the start of the multi-integrated vibration test system experiment, a temperature sensor is placed at the oil return port of the vibration table.

[0075] The instrument determines the upper limit T of the suitable operating temperature of the oil. 上 and lower limit value T 下 And at that upper limit value T 上 and lower limit value T 下 Select a suitable operating temperature within the range, and preset the corresponding upper limit, lower limit and integral of the suitable temperature.

[0076] In some examples, the upper limit of the suitable operating temperature T for the oil is... 上 The value range can be 40℃-50℃; the lower limit of the suitable working temperature T for the oil. 下 The value range can be 5℃-10℃; suitable operating temperature T 佳 The value range can be 30℃-35℃.

[0077] Step S2: Start the multi-integrated vibration test system experiment, defining time t as the independent variable and temperature T as the independent variable.

[0078] The ideal temperature function T(t) of the experimental chamber of the test system is the dependent variable; the time Δt1 is set as a period, the ideal temperature function T(t) is divided into several intervals according to the set period, and the temperature integral of each interval is calculated; the temperature integral of each interval is compared with the upper limit of the suitable temperature integral, the lower limit of the suitable temperature integral, and the suitable temperature integral preset in step S1 to determine the interval type, and the power of the horizontal slide temperature adjustment device is dynamically adjusted according to the interval type.

[0079] For example, the period Δt1 can range from 5 min to 8 min;

[0080] In step S2, the temperature integral A of the nth interval is... n The calculation formula is:

[0081]

[0082] Where t is time (min); T is temperature (°C); the ideal temperature function T(t) is divided into several intervals with Δt1 as one period, where the start time of the nth interval is (n-1)·Δt1 and the end time is n·Δt1, n = 1, 2, ...

[0083] In some embodiments, the upper limit of the suitable temperature integral in step S2 is defined as A. max A max The calculation formula is:

[0084] A max =T 上 ·Δt1

[0085] Where Δt1 is the time of one period; T 上 This is the upper limit of the suitable operating temperature.

[0086] In some embodiments, the upper limit of the suitable temperature integral in step S2 is defined as A. min A min The calculation formula is:

[0087] A min =T 下 ·Δt1

[0088] Where Δt1 is the time of one period; T 下 This is the lower limit of the suitable operating temperature.

[0089] In some embodiments, the suitable temperature integral in step S2 is defined as A. 佳 A 佳 The calculation formula is:

[0090] A 佳 =T 佳 ·Δt1

[0091] Where Δt1 is the time of one period; T 佳 The appropriate operating temperature value.

[0092] Please see Figure 4 Combined Figures 1 to 3 , Figure 4 This is a schematic diagram of interval division provided for embodiments of this application. In some embodiments, according to A above... n A max A min The values ​​divide each interval into a safe interval, a cooling interval, and a heating interval:

[0093] When condition A is satisfied min ≤A n≤A max If the specified range is considered a safe range, then no temperature compensation will be performed within that range.

[0094] When condition A is satisfied n >A max If the specified range is the cooling range, then the cooling power of the horizontal slide temperature regulating device in this range will be set as follows:

[0095]

[0096] in: The maximum cooling power of the horizontal slide temperature control device is given by the calculated power of the horizontal slide temperature control device. Then set the cooling power of the horizontal slide temperature regulating device to [value]. .

[0097] When condition A is satisfied n <A min If the specified range is the heating range, then the heating power of the horizontal slide temperature regulating device within this range will be set as follows:

[0098]

[0099] in: The maximum heating power of the horizontal slide table temperature control device, if the calculated power of the horizontal slide table temperature control device... Then set the power of the horizontal slide heating device to .

[0100] Step S3: Set time Δt2 as one cycle, and record the measured oil temperature T detected by the temperature sensor within each cycle. i Set the temperature deviation threshold λ ΔT ; Utilizing the measured oil temperature T in each cycle i Temperature deviation threshold λ ΔT Temperature correction and compensation are performed on the slide oil.

[0101] The specific process of step S3 is as follows: taking time Δt2 as one period, let the measured temperature of the temperature sensor in the i-th period be T. i Let λ = i = 1, 2, ... ΔT λ is the temperature deviation threshold. ΔT >0; Temperature T measured using a temperature sensor i and temperature deviation threshold λ ΔT Temperature correction is applied to the oil.

[0102] For example, the period Δt2 can range from 15 min to 20 min; the temperature deviation threshold λ ΔT The value range can be 3min-5min.

[0103] Specifically, the method for the second correction is as follows:

[0104] When condition -λ is satisfied ΔT ≤T i T 佳 ≤λ ΔT If so, then no temperature correction is needed in the (i+1)th cycle.

[0105] When condition T is satisfied i T 佳 >λ ΔT Then, at the beginning of the (i+1)th cycle, the cooling power of the horizontal slide temperature regulating device will be additionally increased. ;

[0106] When condition T is satisfied i T 佳 <-λ ΔT Then, at the beginning of the (i+1)th cycle, the heating power of the horizontal slide temperature regulating device will be increased by an additional amount. .

[0107] The embodiments of this application employ a dual temperature control logic of interval temperature integral judgment and periodic measured feedback correction: On the one hand, by quantifying the cumulative temperature effect over a period of time through interval temperature integral, rather than viewing the temperature value at a single point in isolation, the overall trend of temperature change can be captured, avoiding temperature control deviations caused by misjudgments due to single-point temperature fluctuations; on the other hand, by measuring the oil temperature in real time for 5 cycles using a temperature sensor, combined with a temperature deviation threshold for real-time feedback correction, the deviation between the ideal temperature function and the actual test temperature (such as temperature sensor detection error, test environment interference, etc.) can be effectively compensated, thus ensuring that the oil temperature remains stable within the suitable working range and near the optimal working temperature.

[0108] This temperature control method fundamentally suppresses fluctuations in oil viscosity, ensuring uniform oil film thickness and stable load-bearing capacity of the hydrostatic guide rail 4. At the same time, it protects the oil separator 3 from oil deterioration caused by abnormal temperature, effectively eliminating the adverse effects of test temperature changes on the smoothness of movement, positioning accuracy, and operational stability of the horizontal slide 2. It significantly improves the accuracy, repeatability, and reliability of multi-sensory vibration test data, solving the technical problem of large test data deviations and high test failure rates caused by inaccurate temperature control in traditional temperature control methods.

[0109] Furthermore, during the comprehensive vibration test, the temperature of the experimental chamber 1 dynamically changes with the vibration conditions and test duration. Traditional oil temperature control uses a passive compensation mode, which requires detecting that the oil temperature exceeds the suitable range before activating the heating or cooling device for adjustment. This mode has a significant time lag, especially in scenarios where the test temperature changes rapidly. The lag can cause the oil temperature to exceed the suitable range in a short time, affecting the test progress and potentially damaging core components such as the horizontal slide and temperature control device due to excessively high or low oil temperatures, thus reducing the equipment's lifespan. The embodiments of this application adopt an advance compensation mode based on an ideal temperature function. Combining the ideal temperature function preset before the test (the known trend of test temperature change), the temperature function is divided into several intervals with time as the period. By calculating the temperature integral of each interval, the temperature accumulation trend of each interval is accurately predicted, and the power of the heating or cooling device is dynamically adjusted in advance, achieving proactive intervention through prediction and control, rather than passively responding to temperature anomalies.

[0110] Meanwhile, the quantitative calculation method of temperature integral can accurately match the power output, avoid over- or under-compensation in advance, effectively shorten the response time of temperature regulation, solve the lag problem of traditional passive compensation, and ensure that the oil temperature is controlled within a reasonable range in time when the temperature change trend appears. This improves the timeliness, effectiveness and stability of oil temperature regulation in the horizontal slide, adapts to the dynamic and complex temperature change requirements in multi-integrated vibration tests, and ensures the continuous and smooth test process.

[0111] Furthermore, the embodiments of this application divide the ideal temperature curve into several intervals according to a set period by comparing the temperature integral of each interval. The temperature integral of each interval is calculated and compared with the preset upper limit of suitable temperature integral, lower limit of suitable temperature integral, and optimal temperature integral to divide the interval into safe interval, cooling interval, and heating interval. The power of the temperature control device is adjusted only when the integral value exceeds the safe interval (i.e., the temperature accumulation effect exceeds the reasonable range). No adjustment is required within the safe interval, which is equivalent to buffering and filtering small and reciprocating temperature fluctuations.

[0112] This interval division method not only solves the control problem caused by the repeated changes and frequent fluctuations of the ideal temperature curve, but also avoids frequent adjustments to the temperature control device, effectively reducing equipment energy consumption, reducing mechanical wear and electrical losses of the temperature control device, and extending the service life of the heating device, cooling device and the entire temperature control system; at the same time, it avoids the temperature inertia effect caused by frequent adjustments, further improving the stability of oil temperature, and achieving multiple effects of precise temperature control, optimized energy consumption and equipment protection.

[0113] Furthermore, the embodiments of this application construct a comprehensive control mode of interval advance compensation and periodic feedback correction, organically combining active predictive regulation (integral advance compensation based on the ideal temperature function) with dynamic feedback correction (deviation correction based on the measured temperature of the temperature sensor), forming a complete closed loop of prediction-regulation-detection-correction-re-regulation. Advance compensation addresses the lag problem in temperature regulation, while feedback correction addresses the deviation problem in advance prediction. The two work synergistically to effectively resist the influence of factors such as experimental environment interference and equipment operating wear and tear, avoiding the accumulation of temperature deviations and ensuring that the oil temperature remains stable within a reasonable range during long-term testing.

[0114] Meanwhile, this integrated control mode achieves fully automated operation through the control unit, eliminating the need for manual intervention. This reduces the workload of test personnel, avoids errors caused by manual operation, and improves the system's automation level. In addition, the closed-loop control mode can respond to temperature changes in real time and correct temperature control deviations promptly, ensuring the stability and reliability of the horizontal slide of the multi-integrated vibration test system during long-term continuous operation. This significantly improves test efficiency, reduces test costs, and expands the applicability of the multi-integrated vibration test system (it can be adapted to various vibration test scenarios that require long-term, high-precision temperature control).

[0115] In summary, the embodiments of this application leverage the overall advantages of synergistic linkage: precise temperature control ensures experimental accuracy and equipment stability; advance compensation provides a guarantee, solves lag problems, and improves the timeliness of regulation; interval division reduces energy consumption and protects equipment; and comprehensive closed-loop control integrates various advantages to adapt to the needs of long-term continuous testing.

[0116] Overall, this application, through multifaceted technological innovation, has thoroughly solved the core pain points in the traditional multi-vibration test system's slide table oil temperature control, such as inaccurate temperature control, lag in adjustment, high equipment wear and tear, inability to adapt to long-term continuous testing, and low degree of automation. It not only improves test accuracy and efficiency, extends equipment lifespan, and reduces test costs, but also promotes the upgrading of multi-vibration test technology, demonstrating significant technological innovation, practicality, and industrial application value.

[0117] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for automatically adjusting the slide oil temperature in a multi-stage vibration testing system, characterized in that, Includes the following steps: Step S1: Before starting the multi-integrated vibration test system experiment, place a temperature sensor at the oil return port of the vibration table to determine the upper limit value T of the suitable working temperature of the oil. 上 and lower limit value T 下 And at that upper limit value T 上 and lower limit value T 下 Select a suitable operating temperature within the range, and preset the corresponding suitable temperature integral upper limit A. max Suitable temperature integral lower limit A min and suitable temperature integral A 佳 ; Step S2: Start the multi-integrated vibration test system experiment, define the ideal temperature function T(t) of the test system test chamber with time t as the independent variable and temperature T as the dependent variable; set time Δt1 as one period, divide the ideal temperature function T(t) into several intervals according to the set period, and calculate the temperature integral of each interval; compare the temperature integral of each interval with the upper limit of suitable temperature integral, the lower limit of suitable temperature integral, and the suitable temperature integral preset in step S1, determine the interval type, and dynamically adjust the power of the horizontal slide temperature adjustment device according to the interval type; Step S3: Set time Δt2 as one cycle, and record the measured oil temperature T detected by the temperature sensor within each cycle. i Set the temperature deviation threshold λ ΔT ; Utilizing the measured oil temperature T in each cycle i Temperature deviation threshold λ ΔT Temperature correction and compensation are performed on the slide oil.

2. The automatic temperature control method for the slide oil in the multi-stage vibration test system according to claim 1, characterized in that, In step S2, the temperature integral A of the nth interval n The calculation formula is: Where t is time (min); T is temperature (°C); the ideal temperature function T(t) is divided into several intervals with Δt1 as one period, where the start time of the nth interval is (n-1)·Δt1 and the end time is n·Δt1, n = 1, 2, ...

3. The automatic temperature control method for the slide oil in the multi-stage vibration test system according to claim 1, characterized in that, Define the upper limit of the suitable temperature integral in step S2 as A. max A max The calculation formula is: A max =T 上 ·Δt1 Where Δt1 is the time of one period; T 上 This is the upper limit of the suitable operating temperature.

4. The automatic temperature control method for the slide oil in the multi-stage vibration test system according to claim 1, characterized in that, Define the upper limit of the suitable temperature integral in step S2 as A. min A min The calculation formula is: A min =T 下 ·Δt1 Where Δt1 is the time of one period; T 下 This is the lower limit of the suitable operating temperature.

5. The automatic temperature adjustment method for the slide oil in the multi-integrated vibration test system according to claim 1, characterized in that, Define the integral of the suitable temperature in step S2 as A. 佳 A 佳 The calculation formula is: A 佳 =T 佳 ·Δt1 Where Δt1 is the time of one period; T 佳 The appropriate operating temperature value.

6. The automatic temperature adjustment method for the slide oil in the multi-integrated vibration test system according to claim 2, characterized in that, According to A n A max A min The values ​​divide each interval into a safe interval, a cooling interval, and a heating interval: When condition A is satisfied min ≤A n ≤A max If the specified range is a safe range, then no temperature compensation will be performed within that range. When condition A is satisfied n >A max If the specified range is the cooling range, then the cooling power of the horizontal slide temperature regulating device in this range will be set as follows: in: The maximum cooling power of the horizontal slide temperature control device is given by the calculated power of the horizontal slide temperature control device. Then set the cooling power of the horizontal slide temperature regulating device to [value]. ; When condition A is satisfied n <A min If the specified range is the heating range, then the heating power of the horizontal slide temperature regulating device within this range will be set as follows: in: The maximum heating power of the horizontal slide table temperature control device, if the calculated power of the horizontal slide table temperature control device... Then set the heating power of the temperature regulating device to .

7. The automatic temperature control method for the slide oil in the multi-stage vibration test system according to claim 1, characterized in that, The specific process of step S3 is as follows: taking time Δt2 as one period, let T be the actual temperature measured by the temperature sensor in the i-th period. i Let i = 1, 2, ...; denoted as λ. ΔT λ is the temperature deviation threshold. ΔT >0; Temperature T measured using a temperature sensor i and temperature deviation threshold λ ΔT Temperature correction is performed on the oil; the specific method for secondary correction is as follows: When condition -λ is satisfied ΔT ≤T i T 佳 ≤λ ΔT If so, then no temperature correction is needed in the (i+1)th cycle; When condition T is satisfied i T 佳 >λ ΔT Then, at the beginning of the (i+1)th cycle, the cooling power of the horizontal slide temperature regulating device will be additionally increased. ; When condition T is satisfied i T 佳 <-λ ΔT Then, at the beginning of the (i+1)th cycle, the heating power of the horizontal slide temperature regulating device will be increased by an additional amount. .

8. The automatic temperature control method for slide oil in a multi-stage vibration test system according to claim 1, characterized in that, Upper limit of suitable operating temperature T for oil 上 The value range is 40℃-50℃; the lower limit of the suitable working temperature of the oil is T. 下 The value range is 5℃-10℃; the suitable operating temperature T 佳 The value range is 30℃-35℃; The period Δt1 ranges from 5 min to 8 min; the period Δt2 ranges from 15 min to 20 min; the temperature deviation threshold λ ΔT The value range is 3 min to 5 min.

9. An automatic temperature control system for slide table oil in a multi-sensory vibration test system, used in the automatic temperature control method for slide table oil in the multi-sensory vibration test system as described in claim 1, characterized in that, include: Experimental chamber (1), horizontal slide (2), oil separator (3), hydrostatic guide rail (4), temperature sensor (5), temperature control device (6), and control unit; A horizontal slide (2) is located inside the experimental chamber (1); The static pressure guide rail (4) is located between the horizontal slide (2) and the experimental chamber (1); its fixed part is connected to the experimental chamber (1), and its moving part is connected to the horizontal slide (2), providing motion support and guidance for the horizontal slide (2); An oil-separating membrane (3) is wrapped around the outer periphery of the hydrostatic guide rail (4). The edge of the oil-separating membrane (3) is sealed to the horizontal slide (2) and the experimental chamber (1) respectively, and is used to divide the experimental chamber (1) into two mutually isolated spaces. Temperature sensor (5) is installed at the oil return port of horizontal slide (2) to detect the real-time temperature of the slide oil and transmit the detected temperature signal to the control unit. The temperature regulation device (6) includes a heating device and a cooling device. The heating device and the cooling device are arranged on the inner walls of the experimental chamber (1) located below the horizontal slide (2) to receive the control signal from the control unit and to heat or cool the oil in the horizontal slide (2). The control unit is electrically connected to the temperature sensor (5) and the temperature regulating device (6). It integrates the automatic oil temperature regulation method to receive the temperature signal transmitted by the temperature sensor, calculate the real-time regulation power, and send the corresponding control signal to the heating device or cooling device.

10. The automatic temperature control system for the slide oil in the multi-integrated vibration test system according to claim 9, characterized in that, The heating device is a heating tube or resistance wire; the cooling device is a condenser tube, an air-cooled unit, or a water-cooled unit.

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