Motor current acquisition method and system applied to deep space exploration antenna servo controller

• Main Authors: CHEN WEI, WANG TAO, HUANG XIAORONG, ZHANG LEI, FANG ZHIYI, SUN HAILIN, LI HAO, ZHOU HAO
• Format: Patent
• Language: Chinese; English
• Published: 08.05.2020
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention discloses a motor current collection method and system applied to a deep space exploration antenna servo controller. The method comprises the steps: employing a sampling resistor to perform switching collection of all phase currents of a plurality of controlled loads in a mode of an analog switch to obtain a current sampling value, and collecting the value of a reference ground channel; and comparing the value of the reference channel with the current sampling value, performing filtering processing on the current sampling value to obtain an actual working current value of the current load, and using the actual working current value for current loop calculation to complete current closed-loop control. According to the invention, a problem of sampling precision of the current loop in double closed-loop control is solved effectively; the sampling value is not influenced by sampling frequency and ground wire fluctuation, and the precision of antenna current closed-loop control is improved. 本发明公开了一种应