一种引入行驶状态识别的半主动悬架PID控制修正算法

基于车辆不同行驶状态（路面不平度和车速）下悬挂质量垂向加速度和悬架动挠度响应不相同的客观事实,针对半主动悬架PID控制器无自适应能力的局限,以悬挂质量垂向加速度和悬架动挠度响应作为车辆行驶状态的识别判据．建立起一种引入行驶状态识别的半主动悬架PID控制修正算法,进而以某型轿车为对象,采用MATLAB／Simulink建立起半主动悬架PID控制的仿真模型,针对不同行驶状态计算出PID控制算法修正前、后的车辆平顺性响应并加以对比,表明所提出的PID控制修正算法是有效的。

A Modified Algorithm of Semi-Active Suspension PID Control with Driving State Identification Introduced

Based on the fact that a car drives under different ＇driving state＇ （road surface uneven degree and longitudinal velocity of the car）results in dift）rent vertical acceleration of the upper-suspension mass and different suspension dynamic deflection, this paper solve the limitation that the semi-active suspension PID controller have no adaptive ability via establishing a modified algorithm which introduce＇driving state＇ identification in. Further more, founded on an exist car data, a simulate model of senti-active suspension PID control vehicle have been built. Calculating and contrasting the ride comfort responses of the PID controlled model with/without modified algorithm introduced in, the result illustrate that the modified algorithm of semi-active suspension PID control is indeed effective.