CAJ | 학술논문

为了解决传统的被动悬架阻尼参数不可调节，汽车的乘坐舒适性和操纵稳定性难以改善的问题。提出使用磁流变阻尼器代替被动阻尼器，通过将磁流变阻尼器基于BP神经网络的逆向模型与模糊PID控制器形成闭环反馈来实现对汽车悬架的半主动控制。通过仿真实验和数据分析得到，基于磁流变阻尼器的模糊PID控制的半主动悬架系统的车身垂直加速度、悬架动挠度和轮胎动载荷的均方根植明显比被动悬架的均方根值小。结果表明：该方法可以有效地提高汽车的乘坐舒适性和操作稳定性，改善悬架系统的性能。
위료해결전통적피동현가조니삼수불가조절，기차적승좌서괄성화조종은정성난이개선적문제。제출사용자류변조니기대체피동조니기，통과장자류변조니기기우BP신경망락적역향모형여모호PID공제기형성폐배반궤래실현대기차현가적반주동공제。통과방진실험화수거분석득도，기우자류변조니기적모호PID공제적반주동현가계통적차신수직가속도、현가동뇨도화륜태동재하적균방근식명현비피동현가적균방근치소。결과표명：해방법가이유효지제고기차적승좌서괄성화조작은정성，개선현가계통적성능。
To solve the problems that the damping coefficient of the traditional passive suspension system is not adjustable and that the automotive ride comfort and handling stability are hard to improve , a method is presented that the magnetorheological damper replaces the passive dampers and a closed-loop feedback system is formed with the inverse model of magnetorheological damper built on BP neural network and the fuzzy PID controller to realize semi-active control of vehicle suspension .Simutlation experiment and data analysis show that the RMS of the car body vertical acceleration ,suspension dynamic deflection and w heel dynamic load of the semi-active suspension systems with fuzzy PID control based on the magnetorheological damper is smaller than that of the passive suspensions . T he results suggest that the proposed method can effectively enhance the ride comfort and operation stability ,and improve the vibration performance of suspension systems .