The invention discloses an automobile magneto-rheological suspension static output feedback control method capable of ensuring damping force constraint. The method comprises the following steps: 1, designing and solving a convex optimization problem of state feedback gain based on a segmented constraint suspension system kinetic model; 2, deriving a convex optimization problem of output feedback based on the state feedback convex optimization problem; 3, adjusting design parameters to obtain control gain and expected control performance; and 4, establishing a suspension closed-loop control system according to the conversion relationship between the damping force and the driving current. Nonlinear characteristics of a magneto-rheological damper and the number of finite sensors are considered, the design conservatism of an output feedback controller is reduced on the premise that realizability of damping force is guaranteed, and then the performance of an automotive suspension is improved at low cost.
本发明公开了一种保证阻尼力约束的汽车磁流变悬架静态输出反馈控制方法,所述方法包括如下步骤:步骤一、基于分段约束悬架系统动力学模型,设计求解状态反馈增益的凸优化问题;步骤二、基于状态反馈凸优化问题,推导输出反馈的凸优化问题;步骤三、调节设计参数,获得控制增益及期望控制性能;步骤四、根据阻尼力与驱动电流转换关系,建立悬架闭环控制系统。本发明考虑了磁流变阻尼器非线性特性以及有限传感器数量,在保证阻尼力可实现性的前提下,降低输出反馈控制器设计的保守性,进而实现低成本下的汽车悬架性能提升。
Automobile magneto-rheological suspension static output feedback control method capable of ensuring damping force constraint
保证阻尼力约束的汽车磁流变悬架静态输出反馈控制方法
22.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
Europäisches Patentamt | 2021
|Novel magneto-rheological damper and vehicle suspension system damping control method
Europäisches Patentamt | 2021
|Energy feedback type magneto-rheological semi-active suspension and control method thereof
Europäisches Patentamt | 2024
|Europäisches Patentamt | 2023
|