Research on Mathematical Model Establishment of Rare Earth AC Permanent Magnet Synchronous Servo Motor
China's proven reserves of rare earth resources account for 36.52% of the world's total, making it the world's largest country in rare earth resources. China has a large amount of rare earth exports for a long time. Now China uses 36.4% of its reserves to supply more than 90% of the world's rare earth supply, making a great contribution to the supply and stability of the world rare earth market. China is a veritable country with the largest rare earth resource in the world. The proven rare earth resources are about 56.88 million tons. China's rare earth resources are not only rich in reserves, but also have the advantages of complete minerals and rare earth elements, reasonable rare earth grades and reasonable distribution of ore points, which lay a solid foundation for the development of China's rare earth industry. The metallogenic conditions of rare earth resources in China are very favorable, the types of deposits are complete, and the distribution is wide and relatively concentrated. China's rare earth deposits are characterized by a wide and relatively concentrated geographical distribution. So far, geological workers have discovered thousands of deposits, ore deposits and mineralized producing areas in more than two-thirds of the provinces (districts).
As an electric energy conversion device, motors are widely used in our production and life, and are receiving more and more attention. With the continuous development of manufacturing technology and the deepening of research on the working principle of electric motors, many new types of electric motors have emerged. At the same time, the performance of permanent magnet materials is continuously improved and perfected, so that permanent magnet motors are becoming more powerful. High-performance and miniaturization. In addition, power electronics technology. The rapid development of modern control theory, high-performance microprocessors, and electrical and mechanical signal detection technologies has led to a step-by-step improvement in the performance of electric drive systems. AC permanent magnet synchronous motor constructed from rare earth materials has excellent low-speed performance, combined with high-precision power electronic devices, can achieve precise position servo control, and can apply weak magnetic high-speed control, widen the speed range, and improve winter characteristics and efficiency. This makes the AC permanent magnet synchronous motor have a large application space in the high-performance position servo system.
Although AC speed control systems have been widely used in China, most devices, especially high-performance AC servo devices, rely on imports. Based on extensive research on the original and industrial design features of various advanced AC servo systems at home and abroad, combined with the advantages of rare earth AC permanent magnet motors, we have developed a localized device that can completely replace the imported AC speed control devices on the market. The feed system for CNC machine tools and general machine tools is also suitable for other occasions where AC speed regulation is required.
