Research on Chattering Free Sliding Mode Control Method of Automotive Electronic Throttle System
Aiming at the influence of nonlinear characteristics of electronic throttle(ET)system on throttle control accuracy,a ro-bust adaptive chattering free sliding mode control(ACFSM)method is proposed.The control method considers the influence of ETsystem nonlinearity and parameter uncertainty,introduces genetic algorithm(GA),optimizes the control parameters of ACF-SM controller,obtains smooth control signal,and reduces the influence of uncertainty combined with the designed adaptive con-trol law.In order to verify the effectiveness of the proposed control method,experiments show that ACFSM controller not only has no chattering in the response of the closed-loop system,but also can maintain good transient and steady-state tracking perfor-mance.The comparison shows that ACFSM controller is better than ASM controller in tracking performance,especially when the throttle valve encounters external interference,the proposed ACFSMcontroller has strong robustness.
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