基于智能功率集成电路的PWM伺服放大器及其应用

Application of PWM Servo Applifier Based on Smart Power Integreted Circuit

详细介绍了智能功率集成电路（ＳｍａｒｔＰｏｗｅｒＩＣ－ＳＰＩＣ）Ｌ２９２的特点，工作原理及由其构成的ＰＷＭ（ｐｕｌｓｅＷｉｄｔｈＭｏｄｕｌａｔｅｄ）伺服放大器的设计方法。针对某型无人驾驶直升机飞行控制系统的要求，应用Ｌ２９２成功地研制了一种适于机载使用条件的高精度伺服放大器。地面测试和试飞表明：该放大器性能优良，工作可靠，符合小型化、集成化的发展方向。

This paper introduce detailed the feature and principal of smart power integreted circuit(SPIC). The design method of servo amplifier based on SPIC is described. Ac cording to the requirement of flight control system of some unmanned pilotless helicopter, a high accuracy servo amplifier in which L292 is addopted is developed successfully. It is valified by lab and flight test that the servo amplifier behaviers high reliability, good performance, and meet completely the requirement of flight control system of some unmanned pilotless helicopter.