| Summary: | 碩士 === 大葉大學 === 機電自動化研究所碩士班 === 95 === This research will develop an embedded microcontroller for electronic stringing machines. We will design the hardware and software for the microcontroller to integrate the whole electric circuits, such as an interface circuit, a force measurement circuit and a motor driver. A robust force control law is derived to overcome the disturbance from the stiffness variation of the different strings. The proposed controller will obtain a good force accuracy of 0.1kgw and can solve the motor current oscillation problem under the steady-state stringing condition. We will use the IC L6203 to design a PWM-type motor driver. Through a protection circuit, the motor driver can suffer a big stringing current of about 4 A, and the back emf duce to the motor instantly shunted-down. The embedded microcontroller has many build-in functions. We will develop the software to replace the external circuits, including A/D, PWM generators, decoded circuits of encoders and noise- rejected circuits using those functions. Hence, the embedded system is an all-digital design to simplify the electric circuit. Finally, we apply the developed embedded microcontroller for the practice stringing machines.
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