摘要
分析了各种调制技术的优缺点 ,介绍了 ,电磁轴承功率放大器的组成、原理、设计要求和调制技术 ,设计了一款基于DSP的开关功率放大器 ,并给出了实验结果。和传统的功放相比 ,该开关功率放大器可以显著地减少功耗和体积 ,简化线路 ,增强可靠性 ,降低成本以及调试方便等优点。
A power amplifier is one of key elements in the active magnetic bearings. Some basic principles, components, requirements and modulation techniques of switching power amplifier of the active magnetic bearings are analyzed in this paper. The advantage and disadvantage of various modulation techniques are discussed. A switching power amplifier based on the DSP is presented and the experimental results are given. In comparison with the traditional linear power amplifier, the switching power amplifier can remarkably reduce power consume and cubage, predigest circuit, improve reliability, reduce cost and the complexity of adjustment of the parameters of switching power amplifier.
出处
《机电工程》
CAS
2004年第11期29-33,共5页
Journal of Mechanical & Electrical Engineering
