电液线控制动系统压力反步控制算法研究

作者：Shi Qin; Liu Xin; Ying Helie; Wang Mingwei; He Zejia; He Lin^*

来源：Qiche Gongcheng/automotive Engineering, 2022, 44(5): 747-755.

DOI：10.19562/j.chinasae.qcgc.2022.05.012

• Backstepping control
• Brake-by-wire
• Hydraulic pressure control
• Lyapunov stability
• RBF neural network

In order to realize the accurate control of hydraulic pressure in brake-by-wire system, a new type of brake-by-wire system is developed in this paper. A control-oriented dynamics model of system is established through system dynamics analysis, and a backstepping control algorithm is designed based on that system model. A radial basis function network is used to approximate the characteristics of continuous function and estimate the non-linear friction, related to system state variables, as the compensation for backstepping controller, with the Lyapunov stability of the algorithm proved. An electro-hydraulic brake-by-wire test bench is built to conduct tests on several braking conditions and the results show that the control strategy designed can achieve the accurate control of hydraulic pressure in brake-by-wire system with fast response. ? 2022, Editorial Board, Journal of Applied Optics. All right reserved.

• 单位
  合肥工业大学