Boost变换器状态反馈精确线性化控制

采用状态空间平均建模方法，建立了CCM(电流连续型)Boost变换器的非线性仿射模型。从理论上证明了所建立的系统模型满足状态反馈精确线性化的能控性条件和对合条件，推导出所构造的非线性输出函数, 得到非线性状态反馈控制律，实现了原系统的状态反馈精确线性化；详细分析了反馈系数的选取。最后为验证所提控制方案的优越性与无源性控制方法进行了数值仿真对比分析，仿真结果显示，基于本控制方法的系统性能优越，各项性能指标均优于无源性控制方案。

The Research of State Feedback Exact Linearization control of Boost Converter

Using the state-space average modeling method, a nonlinear affine model of Boost converter working on current conduction mode (CCM) is set up. It is testified that the model is satisfied the controllability condition and the involutivity condition, and the nonlinear system of the CCM Boost converter is said to be input-state linearizable. Further, the nonlinear output function and the state feedback law are derived. The selecting of feedback coefficient is analyzed in details. Numerical simulation results are also reported, which allows a comparison between the exact linearization approach and other nonlinear control techniques, e.g. passivity-based control, showing its effectiveness.