"基于at89c51单片机的步进电机控制系统设计与实现"
Abstract: The stepping motor is a vital component in digital control systems, allowing for rapid start-up, braking, positive and negative rotation, and speed control based on control pulses. With high precision step angle and self-locking capabilities when stopped, stepping motors have found widespread applications in automatic control systems, especially in open-loop control systems. This undergraduate thesis focuses on the design of a stepping motor control system based on a single-chip microcontroller and a circular pulse distributor. Through the design and debugging of both hardware and software, the system enables the stepping motor to automatically accelerate and decelerate according to set parameters, ensuring the shortest time to reach the control endpoint without losing steps. Additionally, it accurately controls the stepping motor's rotation, start-up, and stop functions. The hardware of the system is centered around the AT89C51 single-chip microcontroller and includes components such as the circular pulse distributor, keyboard display circuit, and stepping motor drive circuit. The software, developed in C language, encompasses programs for keyboard display, stepping motor speed control, and stop determination. Keywords: stepping motor control system; speed control; single-chip microcontroller In conclusion, this thesis presents a comprehensive design and implementation of a stepping motor control system using the AT89C51 microcontroller and a circular pulse distributor. By combining meticulous hardware design and software programming, the system enables precise control of the stepping motor's speed, direction, and start/stop functions, ensuring efficient and reliable operation in various applications. The developed system showcases the versatility and effectiveness of using microcontrollers in designing control systems for stepping motors, laying the foundation for future advancements in automation and digital control technologies.
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