"悬臂吊车无配重计算机速度调节系统设计与控制方法研究"

The graduation thesis "Design of Speed-regulating Traction System without Counterweight Computer for Cantilever Crane" from North University of Science and Technology of Shenyang Aerospace University mainly focuses on the research of computer-controlled motor speed regulation of the crane to meet the requirements of uniform lifting and lowering when the hook is empty or loaded. The thesis provides a detailed introduction to the start-up, speed regulation, and braking of the crane motor, and proposes multiple speed regulation and braking methods for discussion. Specifically, the thesis adopts the method of cascade speed regulation and reverse connection braking to control the motor, ultimately achieving the requirements of uniform lifting and lowering when the hook is empty or loaded, cross-line parking, and overload parking. The key words of the thesis include cascade speed regulation, reverse connection braking, and motor speed regulation.