STUDY ON DRIVER CIRCUIT OF VEHICLE ACTUATOR BY CIRCUIT OPTIMIZATION

This thesis aims to improve the driving stability and motion performances of actuator through optimization of the internal circuit of mode actuator for vehicles. Although the current mode actuator is capable of location control by encoder and the mode of air conditioning device needs to be changed due to abnormal action, it could induce rotation with small rotational radius. It is attempted to select more advantageous actuator format by changing the circuit, and categorizing the characteristics of DC motor and STEP motor. The conventional actuator is composed of Closed-Loop by utilizing DC motor and Encoder. This operational circuit will be changed into Open-Loop by utilizing STEP motor and Feedback. By changing the motor and operational circuit, better circuit is proposed by comparing this aspect and the characteristics of the DC and STEP motors