具有频率不确定性的π型谐振感应电能传输系统H∞控制方法
H∞ Control Method with Frequency Uncertainty for Type Resonant Inductive Power Transfer System
【作 者】戴欣，周继昆，孙跃
【摘 要】
ABSTRACT: In the type inductive power transfer (IPT) System, due to random change of load and mutual couple parameters, the operating frequency of the IPT system drifts away from the designed frequency randomly. This paper presents a system output control method under uncertain frequency condition. This method utilizes generalized state space averaging (GSSA) method to transform the nonlinear system model in time domain to the linear model in frequency domain. And the complex state variables were also detached to real and imaginary parts respectively to acquire a real coefficients state space model. Furthermore, the method utilizes linear fractional transformation to detach the certainty part and uncertainty part from the state space model. And the model was transformed to a linear state space model with perturbation feedback. A H∞ control method and a mixed sensitivity controller were presented for the model. The performance of the robust controller was given with aid of structured singular value analysis. Simulation and experiment results were also given to verify the control method.
【关键词】不确定；鲁棒控制；广义状态空间平均法；结构奇异值
KEY WORDS: uncertainty; robust control; generalized state space averaging (GSSA); structured singular value
【关键词】不确定；鲁棒控制；广义状态空间平均法；结构奇异值
【下 载】
(浏览1533次)