Active-disturbance-rejection control method for steam temperatures of DSG groove type solar thermal collector

The invention provides an active-disturbance-rejection control method for steam temperatures of a DSG groove type solar thermal collector. The method comprises the steps that S1, after pure lag existing in a steam temperature object of the DSG groove type solar thermal collector is removed, a steam temperature object without the pure lag is obtained; S2, virtual control quantity is introduced, andactive-disturbance-rejection control is conducted on the steam temperature object without the pure lag; S2, a tracking differentiator is adopted to calculate the virtual control quantity, so that actual control quantity is obtained to control the steam temperature. According to the method, an active-disturbance-rejection control technology is reasonably applied to the control process of the steamtemperatures of the DSG groove type solar thermal collector, the large lag control problem of a control object can be effectively solved, an accurate model of the steam temperature object of the DSGgroove type solar thermal c