Robust Passivity-Based Control of a Buck–Boost-Converter/DC-Motor System: An Active Disturbance Rejection Approach

摘要: This paper presents an active disturbance rejection (ADR) approach for the control of a buck-boost-converter feeding dc motor. The presence arbitrary, time-varying, load torque inputs on motor and lack direct measurability motor's angular velocity variable prompts generalized proportional integral (GPI) observer-based ADR controller which is synthesized basis passivity considerations. GPI observer simultaneously estimates exogenous input in on-line cancellation scheme, known as control. proposed scheme thus sensorless one with robustness features added to traditional energy shaping plus damping injection methodology. discrete switching realization designed continuous feedback law accomplished by means PWM-modulation scheme. Additionally, state stability property closed-loop system established. Experimental simulation results are provided.