基于buck变换电路的双闭环超级电容器充电电源，控制器采用PI调节，恒流控制充电，效果良好-Based on buck transform circuit, the double closed loop capacitor charging power supply ，controller PI adjustment, the constant current charge control，The result is good

直接转矩控制无刷直流电机的matlab仿真程序，PI闭环调节-Direct torque control brushless DC motor matlab simulation program, PI closed loop control