【摘要】 针对Zeta变换器在升降压电路控制中的应用，提出了一种比例积分滑模（PISM）控制策略，旨在进一步提升其动态性能和输出电压的稳定性。通过对Zeta变换器系统状态方程的分析，设计了相应的滑模控制器，并对其滑模面横截条件及可达性条件进行论证，证明了控制器的稳定性。采用饱和函数替代传统的符号函数，有效降低了系统的抖振。仿真结果表明，与传统的双闭环比例积分（PI）控制相比，应用所提出的控制策略能够显著减少系统的超调量，并加快其动态响应速度。更多还原

【Abstract】 A proportional integral sliding mode(PISM) control strategy is proposed for the application of the Zeta converter in the control of buck-boost circuits, aiming to further improve the dynamic performance and output voltage stability. By analyzing the state equations of the Zeta converter system, a corresponding sliding mode controller is designed, and the cross-sectional and accessibility conditions of its sliding mode surface are demonstrated, proving the stability of the controller. The conventional sign function is replaced by saturation function, which effectively reduce the system’s chattering. The simulation results demonstrate that compared with traditional dual closed-loop proportional integral(PI)control, the proposed control strategy can significantly reduce the overshoot of the system and accelerate its dynamic response speed.更多还原