Stability analysis of semi-active suspension control system based on hysteresis system theory
XU Xu1, YANG Xiaofeng2, SHEN Yujie2, LI Yue1
1. School of Science, Jiangsu University, Zhenjiang 212013, China;
2. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Abstract:In order to study effects of time delay on stability of a semi-active suspension system, a 2-DOF semi-active suspension model with time delay was established, and sufficient and necessary conditions to satisfy all delay stability of the system was derived by using the improved all delay stability algebraic criterion according to the stability theory of time delay system, and the range of controllable damping value was obtained. Aiming at semi-active suspension parameters not satisfying the all delay stability condition, the stability switching point analysis method was proposed to solve and obtain the actual stability switching point and its stability interval. The time-domain simulation showed that the generation of time delay does not lead to the deterioration of suspension performance under the all delay stability condition; under the condition of non-all delay stability, the performance of suspension drops with increase in time delay and worsens sharply when time delay exceeds the stability switching point.
徐旭1,杨晓峰2,沈钰杰2,李玥1. 基于滞后型系统理论的半主动悬架控制系统稳定性分析[J]. 振动与冲击, 2021, 40(7): 208-215.
XU Xu1, YANG Xiaofeng2, SHEN Yujie2, LI Yue1. Stability analysis of semi-active suspension control system based on hysteresis system theory. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(7): 208-215.
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