Counter control current tracking control method based on average current compensation

This invention is an athwart control current tracking control method based on average current compensation. The processes are as follows: 1) the measuring signal is output through reseting integrating device; 2) found device average current mode; 3) calculate reactive amount i(KT); 4) athwart estimate the control law based on instantaneous current relation, get the break over time of the control switch; 5) compare the space-taking of invariableness frequency triangle wave and the output of the controller to get open of the driving and controlling switch and PWM pulse of the output. This invention wipes off the influences of resonance and aiguille signal caused by current changing of the switching components, and it does not need input filter and reduces the influences of the changing measuring signal. Because this invention adopts the compensation, so when the referential signal changes abruptly, it also can track.