[1]杨政秋[][],李响[],席隆]. 基于PID的空间精密温控研究[J].计算机技术与发展,2014,24(08):143-145.
　YANG Zheng-qiu[] [],LI Xiang[],XI Long[]. Research on Precise Control in Space Temperature Based on PID[J].,2014,24(08):143-145.
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 基于PID的空间精密温控研究()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年08期
页码:
143-145
栏目:
应用开发研究
出版日期:
2014-08-10

文章信息/Info

Title:
 Research on Precise Control in Space Temperature Based on PID
文章编号:
1673-629X（2014）08-0143-04
作者:
 杨政秋[1][2]; 李响[1]; 席隆; 1]
1. 中国科学院 空间应用工程与技术中心；2.中国科学院大学
Author(s):
 YANG Zheng-qiu[1] [2]; LI Xiang[1]; XI Long[1]
关键词:
 ; 温度控制; 数字信号处理; 变PID; PWM
Keywords:
 ; temperature control; DSP; variable PID; PWM
分类号:
TP31
文献标志码:
A
摘要:
 为开展空间力学实验,文中介绍了一种基于DSP变PID算法的空间温度控制系统,应用于空间液桥模型。该方案利用DSP TMS320F2812作为微处理器,前端利用热电偶采集温度信号,经调理电路、AD转换后通过AD转换器自带SPI接口输入到DSP。 DSP根据温度偏差值,运用PID算法控制PWM输出,PWM占空比直接决定驱动温度执行机构工作的桥电路功率,从而实现温度的闭环控制。实验结果证明,该系统稳定性能好、控制精度高,在液桥实验需求范围内控温精度能达到±0.03℃。
Abstract:
 Describe a space temperature control system based on DSP for PID algorithm in order to carry out the experiment of spatial me-chanics,used in space liquid bridge experimental model. The program draws on TMS320F2812 as a microprocessor,the front-end uses thermocouple temperature for signal acquisition,after conditioning circuit,AD conversion input to the DSP by SPI. According to the tem-perature deviation,DSP uses PID algorithm to control PWM,and the PWM duty cycle directly determines the circuit power of bridge driver for the temperature actuator,in order to achieve closed-loop temperature control. Experimental results show that the system is sta-ble,with high control precision,the temperature control precision can reach ±0. 03 °C within the scope of the demand for liquid bridge experiment.

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更新日期/Last Update: 2015-03-26