Finite time dynamic surface control method for PMSM system with output constraint

• Main Authors: WU FENGBIN, WANG SHILONG, ZHANG JUNXING, ZHOU PENG, LI SHAOBO, LI MENGHONG
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2022
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a finite time dynamic surface control method for a PMSM (permanent magnet synchronous motor) system with output constraint, which introduces an appropriate Lyapunov-Krasovskii functional to process a time delay problem and considers that an output constraint problem is converted into an unconstrained problem by a nonlinear transformation function. And then, under a finite time inversion framework, the problem of'complex explosion 'is solved by applying a neural network to estimate an unknown nonlinear function and introducing a first-order filter, and the neural adaptive finite time dynamic surface control method is designed. In addition, all signals of the system are proved to be stable in finite time, and the tracking error is reduced to a small neighborhood of the original point in finite time under the condition of not violating the output constraint. 本发明公开了一种具有输出约束的PMSM系统有限时间动态面控制方法，引入合适的Lyapunov-Krasovskii泛函来处理时滞问题，同时考虑非线性变换函数将输出约束问题转化为无约束问题。然后，在有限时间反演(backstepping)框架下，通过应用神经网络估计