摘要
介绍了一种低干扰驱动控制电源的设计。由CPU产生的PWM波,经过滤波后形成正弦信号作为功放电路信号源,经功率放大后来驱动斯特林制冷器工作。由于电源驱动部分采用线性放大,降低了工作时对红外控制器件的干扰,保证了红外器件的正常工作。程序采用了PID算法来改变输出功率,以稳定制冷机冷头温度,温控精度可达±0.5K。
A low - interference power controller was presented in the paper. PWM generated by the CPU in the controller was tamed into sinusoidal signal by the filter circuit, and the signal was amplified by the power amplifier circuit to drive the Stirling crycooler. As linear amplification was applied in the driver circuit, the controller reduced the electromagnetic interference to the infrared unit to ensure the infrared unit working properly. The PID control algorithm was used in the program to adjust out- put power to stabilize the temperature of the cooler＇s cold finger with the precision reaching ± 0.5K.
出处
《低温与超导》
CAS
CSCD
北大核心
2009年第3期67-70,共4页
Cryogenics and Superconductivity
关键词
低干扰
功率运算放大器
PID调节
数字滤波
Low - interference, Power amplifier, PID control algorithm, Digital filtering
