CAJ | 학술논문

文章建立了1/4车辆非线性悬架系统动力学模型，运用微分几何方法对非线性系统精确线性化，通过滑模趋近律设计模糊滑模控制策略，获得悬架系统的非线性反馈解耦控制器。控制器中的滑模面系数满足滑模运动等效方程的 Hurwitz稳定判据，模糊控制自适应调节切换控制增益实现削弱控制抖振效应和减少控制能耗。仿真结果表明：基于微分几何设计的模糊滑模控制器具有良好的控制性能，能有效降低车身垂直振动加速度、悬架动扰度和轮胎形变，改善了汽车行驶平顺性和安全性。研究结果为非线性汽车悬架的控制提供了有用的理论参考。
문장건립료1/4차량비선성현가계통동역학모형，운용미분궤하방법대비선성계통정학선성화，통과활모추근률설계모호활모공제책략，획득현가계통적비선성반궤해우공제기。공제기중적활모면계수만족활모운동등효방정적 Hurwitz은정판거，모호공제자괄응조절절환공제증익실현삭약공제두진효응화감소공제능모。방진결과표명：기우미분궤하설계적모호활모공제기구유량호적공제성능，능유효강저차신수직진동가속도、현가동우도화륜태형변，개선료기차행사평순성화안전성。연구결과위비선성기차현가적공제제공료유용적이론삼고。
In this paper ,a dynamical quarter-car model of a vehicle is built ,and the exact linearization of nonlinear suspension system is realized by using differential geometry method .T hen the decoupling controller of nonlinear state feedback with fuzzy sliding mode control strategy is proposed based on the reaching law technique ,in which the sliding surface coefficient is determined according to the Hurwitz stability criterion of the equivalent equation ,and the fuzzy algorithm is introduced to adaptively con-trol the gain of the switching controller for weakening the chattering effect and reducing the energy consumption .The simulation results demonstrate that the fuzzy sliding mode controller based on dif-ferential geometry ow ns some good control performance ,thus reducing vertical acceleration ,suspen-sion dynamic deflection and tire deformation of the vehicle .Therefore ,the ride comfort and safety of vehicle are improved by this control method .The study provides a useful theoretical reference for con-trolling the nonlinear suspension of vehicle .