Design and Implementation of DC Motor Drive Systems for Electric Drill and Nail-Driver Applications

• Main Authors: Pu-sheng Hsu, 許卜昇
• Other Authors: Tian-hua Liu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/82214584367988303046

碩士 === 國立臺灣科技大學 === 電機工程系 === 100 === The thesis investigates the design and implementation of the DC motor drive system for electric drill and nail-driver applications. This research has been cooperated with a manufacturing factory. In this thesis, first, the implementation of the driving and control system for the electric drill, which includes hardware and software, is discussed. A novel current control method is proposed to improve the disadvantages of the conventional electric drill system. In addition, a proportional-integral controller is used to obtain the required current control. Next, a full-digital sensorless drive system of a electric nail-driver is implemented. The Hall-effect sensor is removed. By measuring the voltage and current of the DC motor, the rotor speed can be estimated to achieve the closed-loop control and driving system of the nail-driver. This sensorless technique can save cost, space, and avoid the problem of the high-frequency noise, which interfere with the encoder signal. A microcontroller, PIC16F616, made by Microchip company, is used as the control center for the electric drill system to execute the current controller. On the other hand, a microcontroller, PIC16F1823 is used as the control center for the electric nail-driver to execute the current controller and speed estimation. Experimental results can validate the theoretical analysis to show the feasibility and correctness of the proposed method.