The invention discloses a self-adaptive control method for an automobile active suspension, and belongs to the technical field of automobile engineering. The invention discloses a self-adaptive control method for an automobile active suspension. The self-adaptive control method comprises the following steps: S1, designing a nonlinear dynamic model of a system; S2, designing an unknown time-varying function to represent an uncertain part of the system; S3, designing a Fourier series-based function approximation method to estimate an unknown time-varying system function; and S4, designing a self-adaptive sliding mode control system. According to the method, the uncertain part of the system is estimated on line, the control force is calculated on line through the self-adaptive sliding mode controller, the influence of load and system parameter time varying can be better overcome, and compared with traditional PID control, the vibration reduction control performance of the system is greatly improved.
本发明公开了一种汽车主动悬架自适应控制方法,属于汽车工程技术领域。一种汽车主动悬架自适应控制方法,包括以下步骤:S1,设计系统的非线性动力学模型;S2,设计未知时变函数表示系统的不确定部分;S3,设计基于傅里叶级数的函数近似法估计未知时变系统函数;S4,设计自适应滑模控制系统。本发明,对系统的不确定部分进行在线估计,通过自适应滑模控制器在线计算控制力,能够更好地克服载荷与系统参数时变的影响,与传统PID控制的相比,大大提高了系统的减振控制性能。
Self-adaptive control method for automobile active suspension
一种汽车主动悬架自适应控制方法
04.01.2022
Patent
Elektronische Ressource
Chinesisch
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