【摘要】 提出了一种Fuzzy-PID混合控制的控制策略——Fuzzy-PID开关切换控制,用于车辆半主动悬架的控制。通过与Fuzzy控制策略比较,得出其控制的基于磁流变减振器的半主动悬架系统在减小簧载质量加速度和悬架动挠度方面具有更好的效果,具有鲁棒性强、超调量小、抗干扰等特点。更多还原

【Abstract】 With high degree of accuracy, rapid response and good robust, the PID control theory was applied in control system that provided with linear, mathematic model; the strongpoint of fuzzy control is that it doesn’t need the precise mathematic model of the controlled object, but the stability of fuzzy theory needs further studying. Vehicle suspension system is a representative time lag, nonlinear system, and the modeling is difficult and uncertain. Integrated the two controlling strategy hereinbefore, a new-style Fuzzy-PID mixed controlling strategy——Fuzzy-PID switch control has been put forward and was used in semi-active suspensions. Compared with fuzzy controlling, the Fuzzy-PID switch control has better effect in decreasing sprung mass acceleration and suspension dynamic flexibility, and has good robust performance, little overshoot quantity and anti-jamming performance.更多还原