分析了两态采样-保持策略开关功率放大器的优缺点,提出了一种利用可编程逻辑器件(简称PLD)进行磁力轴承三态采样-保持开关功率放大器设计的方法,并在可编程逻辑器件内部逻辑功能设计的基础上,给出了内部功能的时序仿真图.和传统设计方法相比,该设计具有可以明显减少所使用器件数目,简化线路,减小功率放大器体积,降低设计成本,提高设计效率以及提高功放系统的整体可靠性等优点.
The advantage and disadvantage of sample-hold strategy based double-state switching power amplifiers are analyzed, and a method of using the PLD (programmable logic device) is proposed in the design of sample-hold strategy based tristate switching power amplifiers for active magnetic bearings. The logic function of PLD is designed, and the simulation waveform of the inside function is given. Compared with traditional design methods, this design has the advantages that the number of devices is cut down, the circuit is simplified, the volume is reduced, the design cost is reduced, the design efficiency is improved and the reliability of the oower amolifier system is enhanced.