Forward变换器的精确线性化控制  

Control of Forward converter by state feedback linearization

作　　者：李昂[1] 

机构地区：[1]陕西理工学院电气工程学院,陕西汉中723003

出　　处：《电子技术应用》2013年第3期67-69,73,共4页Application of Electronic Technique

基　　金：陕西省教育厅科研计划资助项目(2010JS042)

摘　　要：为了提高Forward变换器非线性系统的控制性能,采用了精确线性化控制方法。首先采用开关函数和开关周期平均算子建立适合微分几何方法的仿射非线性系统模型。从理论上证明了该模型满足系统精确线性化的条件。对非线性坐标变换后得到的线性系统,利用二次型最优控制策略推导出非线性状态反馈控制律。实验结果表明,系统具有良好的静态和动态性能,验证了该控制方法的有效性和正确性。In order to improve the control performance of the Forward converter, exact linearization design approach is proposed to apply tO converter control. Firstly, the affine nonlinear system models for differential geometry methods are established with the switching function and average switch period operator. Then, the models are proved in theory to meet conditions for exact linearization. For the linear system of nonlinear coordinate transformation, quadratic optimal control strategy is used. The nonlinear state feedback control laws are deduced. The corresponding experiment results show that the system has good static and dynamic performance, and the effectiveness and correctness of the control method are verified.

关 键 词：Forward变换器 仿射非线性系统 精确线性化 最优控制 

分 类 号：TM46[电气工程—电器]