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Research on Full-digital Power Amplifier of Magnetic Levitating Bearing

Author: YuYuXiang
Tutor: ZhouZuDe
School: Wuhan University of Technology
Course: Communication and Information System
Keywords: DSP Magnetic bearings Digital control PI algorithm
CLC: TN722.75
Type: Master's thesis
Year: 2006
Downloads: 123
Quote: 2
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Abstract


Active magnetic bearings is important in many ways. The magnetic bearing is supported by electromagnetic force pieces of a stable suspension in the space of a high-performance mechatronic bearing. At home and abroad to the emergence of the magnetic bearing supporting technology called a revolution. However, due to the magnetic bearing mechanical, electronic, computer, control and sensing multidisciplinary research involves technology, so far, at home and abroad is still a lack of a mature theory and design methods, especially in applications of magnetic bearings have not instance The urgent need to conduct research on magnetic bearings, high-tech products. The implementing agency control system, power amplifier, is an important part of the magnetic bearing system, its performance has a direct impact on the performance of the entire system. Power amplifier design is the focus of the entire magnetic bearing system design and one of the difficulties. This paper discusses the analysis of the current situation of the domestic and international development of magnetic bearing technology, research and development based on the magnetic bearings DSP embedded digital power amplifier, and summarizes the current magnetic bearing system problems and technical difficulties. Established single-degree-of-freedom mathematical model of the active magnetic spindle decentralized control theory and the equation of state, proposed a new type of magnetic levitation the Spindle digital power amplifier, using TMS320LF2407A as the core processor, multitasking operating system based uC/OS- Ⅱ The components on the system power amplifier system core algorithms, including PID algorithm process control and power amplifier system variable parameter PI algorithm process. LCD process and the serial communication sub-process, and also of the power conversion circuit improvements designed to improve the efficiency of power conversion circuits. Digital design, optimize system power amplifier, and achieved satisfactory results. The experiments show that the stable suspension of magnetic bearing design enables digital power amplifier DSP-based embedded magnetic bearing, and has a good track, low noise, high rigidity, high precision control advantages. Complete hardware circuit design and debugging of software, hardware and software by function is divided into different modules, system software, software engineering, program structured, modular functions. Laid a good foundation for the gradual expansion of the later function.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Amplification technology,the amplifier > Amplifier > Amplifiers: the role of sub- > Power amplifier
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