基于C51的高精度线性电源及监控系统设计(1).doc

基于C51的高精度线性电源及监控系统设计 PAGE I 摘 要 为了满足航空控制舱包括摇摆台、1200HZ两相陀螺仪驱动电源、1.5KVA400HZ中频电源箱等测控系统需要高精度、大电流输出的线性供电电源的要求，同时为了保证1200HZ和400HZ中频交流电源的输出波形不失真的标准正弦波，设计了一款高精度多路输出直流电源，该供电电源系统设计通过优化电路结构，增加反馈等环节搭建多路高精度直流供电电源，电源双路输出电压±15V，单路输出5V，负载电流在0～1.5A变化过程中，输出电压仍能保证高精度输出，通过运用高品质元件以及对电路结构的独特设计，搭建了一个满足航空测控设备需要的高精度、高稳定性、大电流输出的航空供电电源，同时利用（C8051F020单片机+ 12864ZB图形显示模块）实时监控电源的输出，通过实物测试以及24位高精度台式万用表调校，测试及显示结果为：负载变化率（0～1.5A）≦0.1%，双电源输出（±15V）电压对称度≦0.1%，远远超出了预期的设计精度。该电源现已安装于航空测控箱，并已投入使用，经过前期的试运行，电源使用效果良好。 关键词：线性电源；测控系统；多路大电流；高稳高精度 PAGE II 江苏信息职业技术学院毕业设计论文 PAGE II ABSTRACT In order to satisfy the linear power supply control module includes other aviation platform, 1200HZ two-phase gyroscope driving power supply, 1.5KVA400HZ power supply box control system requires high precision and high output current requirements, at the same time in order to ensure the standard sinusoidal output waveform 1200HZ and 400HZ frequency AC power without distortion, the design of a high precision multi output DC the power supply, the power supply system to optimize the circuit structure through the design, increase the feedback to build a multi channel high precision DC power supply, power dual output voltage + 15V, single output 5V, load current 0 ~ 1.5A in the process of change, the output voltage can still ensure the high precision of output, through the use of high-quality components and unique design of the circuit structure, set up a meeting with high precision and high stability, wide range of output air control equipment need. Aviation power supply, and use (C8051F020 MCU + 12864ZB graphics display module) output real-time monitoring of power supply, through the physical test and 24 bit high precision desktop multimeter calibration, test and display the results as follows: the load rate (0 ~ 1.5A) is less than 0.1%, dual power supply output voltage (+ 15V) symmetry less than 0.2%, far beyond the expected design accuracy. The power supply has been installed in the aviation control box, and put into use,