Optimal Design and Current Control Waveform of Torque Motor for Machine Tools
Date Issued
2007
Date
2007
Author(s)
Yang, Shih-Chin
DOI
en-US
Abstract
Machine tools are most important and fundamental in the industry, especially at present, where there are great concerns about energy shortage and human-centered technologies. Traditional machine tools indirectly driven by conventional motors do not always operate efficiently, due to their mass moment of inertia and complexly coupled mechanisms. Today, a new competitive environment is emerging and forcing the evolution of machine tools for increasing efficiency over a wide range of operation. A directly driven torque motor has become a promising solution to the next-generation multi-axis machine tool, for its flexibility and intelligence in mass production.
This thesis introduces a systematic design and control procedure of torque motor for the next-generation machine tools that operate with high torque and low ripples. From the design perspective, the optimal design of motor geometry maximizes the output torque and efficiency; it also minimizes the cost under various constraints of size, materials and power sources. From the control perspective, an optimal current control waveform with an optimal shift angle in each phase is determined in order to increase more output torque. A prototype is fabricated, and the experimental results not only show that the motor meets all the performance requirements, but also prove the reliability of the proposed design procedure. The design and control technology of this novel torque motor has been transferred to a world-class prestigious machine tool company.
Subjects
電機機械
最佳化設計
工具機
Electric Machine
Optimal Design
Machine Tool
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-96-R94522816-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):3fc56d6b91dbe8febad3ebbc168dbba4