车用发动机VVT系统双积分自调节PID控制的研究

Study on Dual Integration and Self-Adjustment PID Control of VVT System in Vehicle Engine

针对车用发动机VVT系统工况变化复杂、非线性和滞后性等特点,设计了双积分的PID控制策略,同时加入了积分预控的功能,并对微分部分作了自调节处理。通过试验验证了本VVT控制策略的可行性与实用性。

As the operating status of the VVT system is complex, nonlinear and delayed, this paper designs a dual integration PID control strategy, and adds the function of I -part precontrol. Besides, this strategy can enable D -part automatically. Finally, the experimental study is carried out on a test vehicle, validates the feasibility and practicability of the control strategy.