Abstract: Micro actuator is applied to aerocraft wildly, which based on the specific relationship between the input current and the output torque. The general process of the research on application of current source is introduced, which foucus on the characteristics of error-free power-output getting across the calibration of a micro actuator. Based on the theory relationship between the current and moment of micro actuators, the requirement of the input current is confirmed according the uncertainty of the torque, the current source is selected ultimately and the application reasonableness of current source is verified through the specific experiment designed.

Key words: Micro actuator calibration, Current source, Error-free power-output