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Control Technology of Stepper Motor Driver and Its Design for Applications

Author: ChenZhiCong
Tutor: GuoDongHui
School: Xiamen University
Course: Circuits and Systems
Keywords: Stepper Motor Sinusoidal Subdivided Driving Motion Control
CLC: TM383.6
Type: Master's thesis
Year: 2008
Downloads: 1586
Quote: 10
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Abstract


Stepper motor is a kind of electromechanical component that can turn electrical pulse into mechanical angular displacement or linear displacement. Associated with servo systems, it can achieve good positional accuracy without complicated feedback loops, are easy to control and of high cost performance, have no accumulative error. Thus stepper motor is widely used in economy numerical control positioning system. In this thesis, we first introduce the characteristic, structure, working principle of stepper motor. After that, we adopt MCU to develop several drivers for stepper motor. At last, we apply the stepper motor to the system of automatic microscopic IC photo taking.In this thesis, we develop several projects about the stepper motor as following:(1) Testing instrument for 2 phase permanent magnet stepper motor.The instrument adopts driving method of constant voltage and has fixed frequency, variable frequency, trigger and endurance four kinds of test modes. Its working parament can be set via the man-machine interface constituted by button and LCM.(2) 5 phase hybrid stepper motor driver. The driver adopts driving method of constant total current chopped wave, can make the motor work more smoothly and output higher torque.(3) 3-dimensional subdivided driver for 2 phase hybrid stepping motor.The dirver adopts driving method of sinusoidal subdivided constant current chopped wave, can drive 3 stepping motors simultaneously.(4) CAN-RS232 and USB-RS232 transparent protocol conversion modules.These two modules can be used to update the communication method from master-slave mode based on RS485 to multi-hosting mode based on CAN. By this way, the real-time capability of communication can be improved observably without changing the RS232 interface.(5) Automatic microscopic chip photo taking system.The hardware section of the system mainly consists of 3-dimensional subdivided driver, motorized translation stange, microscope, CMOS camera and computer.

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CLC: > Industrial Technology > Electrotechnical > Motor > Micro-motor > Control of micro motor > Stepping decline of motor
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