DIGITAL CONTROLLER

摘要

There is provided a digital controller which can generate no oscillation even if sensing a load side and enables control of supplying a desired voltage to the load. In an power amplifier which supplies an output voltage v o to the load connected via a load connecting line, a load voltage v L and the output voltage v o are periodically sampled to calculate a manipulating variable ¾ 1 from the output voltage v o , the load voltage v L and an arbitrary target value r. Based on the manipulating variable ¾ 1 calculated, a control signal is output to the power amplifier. As a result, when connecting an LC filter with a load device 9 of the power amplifier intended for a control target and besides the load connecting line is long, a robust digital controller without generating oscillation even if sensing the load side is performed can be realized.