作　　者： ; ; ; ;

机构地区： 江苏科技大学

出　　处： 《机械设计与制造》 2013年第3期172-174,共3页

摘　　要： 目前在汽车直接横摆力矩控制器设计中,往往忽略了可利用的附加横摆力矩是限制在一定范围之内的这一约束条件,而当系统饱和时控制器输出与输入将不再满足所设计的反馈规律,这导致在实际环境下工作时难以保证控制精度。为了克服这一缺陷,利用矩阵不等式方法设计了一种抗饱和的汽车稳定性控制策略。通过仿真实验表明,与二次型最优控制器相比,抗饱和控制器不仅能有效实现控制目标,同时还具有良好的抗饱和性能。该方案的设计为更加合理的汽车稳定性控制策略提供了参考。 The actuator of controller for vehicle direct yaw-moment control always has physical limitation,so this is actually an input saturation system.It is known that even linear feedback laws when saturated can lead to instability.While how to deal with this constraint condition is rarely to be concerned until now.To overcome this question,an anti-saturation controller has been proposed.In this design,the problem of designing linear state feedback law has been transformed into an optimization problem that can be formulated and solved with linear matrix inequalities’constrains.Simulation study has been performed,and the results show that compared with LQR controller,anti-windup controller can not only have performance improvement,but also avoid saturation obviously,so anti-windup type controller could be a more reasonable choice for direct yaw-moment control for vehicle lateral stability.

关 键 词： 汽车稳定性 横摆力矩控制 输入饱和

领　　域： [机械工程] [自动化与计算机技术] [自动化与计算机技术]