CN-121977000-A - Intelligent perception-based electrohydraulic gear shifting test bed safety interlocking control method and system

CN121977000ACN 121977000 ACN121977000 ACN 121977000ACN-121977000-A

Abstract

The invention discloses an electrohydraulic gear shifting test bed safety interlocking control method and system based on intelligent perception, relating to the technical field of test bed safety control, wherein the method comprises the following steps of setting initial safety interlocking configuration parameters; setting an overpressure protection constraint condition based on the initial safety interlocking configuration parameters, performing mutual information nonlinear coupling analysis, setting an overflow protection constraint condition, determining candidate interlocking control strategy combinations, setting an interlocking control strategy search space, performing pareto front screening, and determining an optimal interlocking control strategy combination. The invention solves the technical problem of insufficient safety protection of equipment operation caused by lack of risk accurate control of the electro-hydraulic gear shifting test bed in the prior art, achieves the safety interlocking control of the electro-hydraulic gear shifting test bed, and improves the technical effects of equipment operation safety and reliability.

Inventors

GAO KANG
Han Zhushi
Xia Xigong
Kuang Chunping
DENG SIYU
GUO HONGFEI
WANG ZHUANG
LI DAPENG
ZHANG HUI
QIAO ZHIYONG
BAI QINGBEN
LI HANFEI
QIN ZHIYONG
BAI BING
GAO JING
LIU JIAN

Assignees

中国人民解放军32302部队10分队

Dates

Publication Date: 20260505
Application Date: 20260305

Claims (10)

1. The intelligent perception-based electrohydraulic gear shifting test bed safety interlocking control method is characterized by comprising the following steps of: Setting initial safety interlocking configuration parameters according to the bench layout information of the target electrohydraulic gear shifting test bench; Based on the initial safety interlocking configuration parameters, carrying out mutual information nonlinear coupling analysis with a pressure-temperature coupling risk area by combining a test time sequence coordinate system and balance coefficients among different tested piece interfaces, and setting an overpressure protection constraint condition; Based on the initial safety interlocking configuration parameters, carrying out mutual information nonlinear coupling analysis with a flow-temperature coupling risk area by combining a test time sequence coordinate system and balance coefficients among different tested piece interfaces, and setting an overcurrent protection constraint condition; Determining candidate interlocking control strategy combinations according to the overpressure protection constraint condition and the overflow protection constraint condition, and setting an interlocking control strategy search space; And in the interlocking control strategy search space, performing pareto front screening to obtain a device safety non-dominant solution set, an interlocking response non-dominant solution set and a test piece protection non-dominant solution set, and determining an optimal interlocking control strategy combination.
2. The intelligent perception based electro-hydraulic shift test stand safety interlock control method according to claim 1, wherein based on the initial safety interlock configuration parameters, in combination with a test time sequence coordinate system, equalization coefficients among different tested piece interfaces, the method further comprises: mapping hydraulic pressure data, flow data and oil temperature data to the test time sequence coordinate system based on the initial safety interlocking configuration parameters, and setting equalization coefficients among different tested piece interfaces; and the balance coefficient among the different tested piece interfaces is used for quantifying the time correlation of the pressure consistency and the flow distribution deviation.
3. The intelligent perception based electro-hydraulic shift test bed safety interlocking control method according to claim 2, wherein mutual information nonlinear coupling analysis is performed with a pressure-temperature coupling risk area, overpressure protection constraint conditions are set, and the method further comprises: Performing pressure amplification coupling analysis in the testing process based on the fluid-thermal coupling effect, constructing a pressure conduction path between a hydraulic pump station and a tested piece, and determining a pipeline damping matrix; And based on the pipeline damping matrix, predicting a pressure gradient by combining a dynamic test curve, and determining the pressure-temperature coupling risk region when the coherence matching exists between the local pressure rising rate and the oil temperature rising rate.
4. The intelligent perception based electro-hydraulic gear shifting test bed safety interlocking control method according to claim 2, wherein mutual information nonlinear coupling analysis is performed with a flow-temperature coupling risk area, and an overcurrent protection constraint condition is set, and the method further comprises: carrying out flow amplification coupling analysis in the testing process based on the fluid-thermal coupling effect, constructing a flow conduction path between a hydraulic pump station and a tested piece, and determining a pipeline conductance matrix; and based on the pipeline conductance matrix, predicting flow intensity gradient by combining a dynamic test curve, and determining the flow-temperature coupling risk region when the coherence matching exists between the local flow fluctuation amplitude and the oil temperature rising rate.
5. The intelligent perception based electro-hydraulic shift test stand safety interlock control method according to claim 1, wherein candidate interlock control strategy combinations are determined according to the overpressure protection constraint condition and the overflow protection constraint condition, and an interlock control strategy search space is set, the method further comprising: Performing step gain configuration of a first interlock vector in a pressure gain adjustment space with a continuous hydraulic pressure signal based on the candidate interlock control strategy combination; performing step gain configuration on a second interlock vector in a digital control logic space by using discrete electromagnetic valve switch signals based on the candidate interlock control strategy combination; and setting the interlocking control strategy search space through the first interlocking vector and the second interlocking vector.
6. The intelligent perception based electro-hydraulic shift test stand safety interlock control method according to claim 1, wherein a device safety non-dominant solution set is obtained, the method comprising: In the interlocking control strategy search space, analyzing the viscosity change of hydraulic oil and the aging rate of a sealing element under different oil temperatures by simulating the influence of pressure fluctuation on the abrasion of the hydraulic component; meanwhile, dynamically optimizing the rated pressure upper limit and the pressure relief response time, introducing a temperature compensation coefficient and step-type flow regulation, and determining the safety non-dominant solution set of the equipment.
7. The intelligent perception based electro-hydraulic shift test stand safety interlock control method of claim 6, wherein an interlock response non-dominant solution set is obtained, the method comprising: in the interlocking control strategy search space, for the tested pieces of the gear shifting valve assemblies of different types, analyzing the test cycle time loss caused by response delay of the valve core, optimizing the matching relation between the switching sequence of the electromagnetic valve and the flow supply, and determining the non-dominant solution set of the interlocking response.
8. The intelligent perception based electro-hydraulic shift test stand safety interlock control method of claim 7, wherein a test piece protected non-dominant solution set is obtained, the method comprising: In the interlocking control strategy search space, adjusting a protection action threshold value and response delay time for a safety interlocking component comprising a preset pressure clamping value and an overtemperature protection value, and determining the non-dominant solution set of the tested piece protection; Meanwhile, a leak monitoring structure for suppressing hydraulic shock due to seal failure is introduced in the hydraulic circuit.
9. The intelligent perception based electro-hydraulic shift test stand safety interlock control method according to claim 4, wherein the flow amplification coupling analysis in the test process is performed based on the fluid-thermal coupling effect, the method further comprising: In the target electrohydraulic gear shifting test bed, a multidimensional sensing array distributed on key nodes is used for collecting hydraulic pressure data, flow data, oil temperature data and valve position states in the testing process in real time, wherein the key nodes comprise a hydraulic circuit, a tested piece interface and a hydraulic pump station; And extracting pressure fluctuation frequency, flow impact strength, temperature rise rate and action synchronization error according to the hydraulic pressure data, flow data, oil temperature data and valve position state, carrying out parameter correlation characteristic analysis, and identifying the fluid-thermal coupling effect affecting the interlocking control performance.
10. The intelligent perception-based electro-hydraulic gear shifting test bed safety interlocking control system is characterized in that the system is used for implementing the intelligent perception-based electro-hydraulic gear shifting test bed safety interlocking control method according to any one of claims 1-9, and the system comprises: The configuration parameter setting module is used for setting initial safety interlocking configuration parameters according to the bench layout information of the target electrohydraulic gear shifting test bench; the overpressure protection constraint condition setting module is used for carrying out mutual information nonlinear coupling analysis with a pressure-temperature coupling risk area based on the initial safety interlocking configuration parameters and combining a test time sequence coordinate system and balance coefficients among different tested piece interfaces to set an overpressure protection constraint condition; The overcurrent protection constraint condition setting module is used for carrying out mutual information nonlinear coupling analysis with a flow-temperature coupling risk area based on the initial safety interlocking configuration parameters and combining a test time sequence coordinate system and balance coefficients among different tested piece interfaces to set an overcurrent protection constraint condition; The control strategy combination determining module is used for determining candidate interlocking control strategy combinations according to the overpressure protection constraint condition and the overflow protection constraint condition and setting an interlocking control strategy search space; And the optimal interlocking control strategy combination determining module is used for performing pareto front screening in the interlocking control strategy searching space to obtain a device safety non-dominant solution set, an interlocking response non-dominant solution set and a test piece protection non-dominant solution set, and determining the optimal interlocking control strategy combination.

Description

Intelligent perception-based electrohydraulic gear shifting test bed safety interlocking control method and system Technical Field The invention relates to the technical field of safety control of test tables, in particular to an electrohydraulic gear shifting test table safety interlocking control method and system based on intelligent perception. Background The electrohydraulic gear shifting test bed is used as core equipment for testing performance of components such as a gear shifting valve assembly, is easily influenced by pressure-temperature and flow-temperature coupling effects in the testing process, faces risks such as abnormal ascending of local pressure and overlarge flow fluctuation, the existing control method lacks accurate control over the coupling risks, and does not fully consider the equipment operation safety, the interlocking response efficiency and the requirement of tested piece protection, and has the problems of insufficient safety protection, poor adaptability of an interlocking strategy, easiness in damage of a tested piece and the like, so that the high-precision safety control requirement under a complex test scene is difficult to meet. In the prior art, an electrohydraulic gear shifting test bed lacks accurate risk management and control, so that the technical problem of insufficient safety protection of equipment operation is caused. Disclosure of Invention The application provides an electro-hydraulic gear shifting test bed safety interlocking control method and system based on intelligent perception, which are used for solving the technical problem that the electro-hydraulic gear shifting test bed lacks risk accurate management and control in the prior art, so that the equipment operation safety protection is insufficient. In view of the above problems, the application provides an electrohydraulic gear shifting test bed safety interlocking control method and system based on intelligent sensing. According to a first aspect of the application, an electrohydraulic gear shifting test bed safety interlocking control method based on intelligent sensing is provided, and the method comprises the following steps: Setting initial safety interlocking configuration parameters according to bench layout information of a target electrohydraulic gear shifting test bench, carrying out mutual information nonlinear coupling analysis with pressure-temperature coupling risk areas based on the initial safety interlocking configuration parameters in combination with a test time sequence coordinate system and balance coefficients among different tested piece interfaces, setting overpressure protection constraint conditions, carrying out mutual information nonlinear coupling analysis with flow-temperature coupling risk areas in combination with the test time sequence coordinate system and balance coefficients among different tested piece interfaces based on the initial safety interlocking configuration parameters, setting overflow protection constraint conditions, determining candidate interlocking control strategy combinations according to the overpressure protection constraint conditions and the overflow protection constraint conditions, setting an interlocking control strategy search space, and carrying out pareto front screening in the interlocking control strategy search space to obtain equipment safety non-dominant solution sets, interlocking response non-dominant solution sets and tested piece protection non-dominant solution sets, and determining optimal interlocking control strategy combinations. In a second aspect of the application, an electro-hydraulic gear shifting test bed safety interlocking control system based on intelligent sensing is provided, the system comprises: The system comprises a configuration parameter setting module, an overpressure protection constraint condition setting module, a control strategy combination determining module, an optimal interlocking control strategy combination determining module and a test piece protection non-dominant solution set, wherein the configuration parameter setting module is used for setting initial safety interlocking configuration parameters according to bench layout information of a target electrohydraulic gear shifting test bench, the overpressure protection constraint condition setting module is used for carrying out mutual information nonlinear coupling analysis on the basis of the initial safety interlocking configuration parameters, combining a test time sequence coordinate system and balance coefficients among different tested piece interfaces, the initial safety interlocking configuration parameters, combining the initial safety interlocking configuration parameters with a test time sequence coordinate system and balance coefficients among different tested piece interfaces, setting an overflow protection constraint condition, the control strategy combination determining module is used for determining candidate interlocking contr