Title: Pressure control of clutch hydraulic actuator in automotive transmission based on time-frequency domain combined approach

Authors: Heqi Yan; Guangqiang Wu; Fusheng Xie

Addresses: Institute of Automotive Simulation Science, School of Automobile Studies, Tongji University, Shanghai 201804, China ' Institute of Automotive Simulation Science, School of Automobile Studies, Tongji University, Shanghai 201804, China ' Institute of Automotive Simulation Science, School of Automobile Studies, Tongji University, Shanghai 201804, China

Abstract: In response to the problem of a certain gearbox hydraulic actuator system driving the clutch to complete fast and stable gear shifting, the model construction and control algorithm design of the gearbox hydraulic actuator system are studied to improve the response speed and steady-state accuracy during the gear shifting process, while ensuring fast and stable gear shifting. In this paper, a time-domain model of the hydraulic system is established by combining the working state of the system, using principal component analysis and genetic algorithm (GA) to optimise the system model parameters. Then, using the constructed model, a sliding mode controller (SMC) and an H-infinity robust controller are designed for combined control of the system from the point of time-frequency domain. Finally, the effectiveness of the algorithm and model is verified using a gearbox bench. The results show that the combined control algorithm has a significant control effect in response speed and accuracy.

Keywords: hydraulic actuator; pressure-based control; principal component analysis; genetic algorithm; sliding mode control; robust control.

DOI: 10.1504/IJVP.2024.142104

International Journal of Vehicle Performance, 2024 Vol.10 No.4, pp.373 - 402

Received: 12 Dec 2023
Accepted: 20 Apr 2024
Published online: 07 Oct 2024 *

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