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基于PID控制器和無(wú)線(xiàn)通信技術(shù)的熱泵測控系統設計
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Design of Heat-pump Measurement and Control System Using PID and Wireless Communication
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    摘要:

    熱泵系統廣泛應用于供暖領(lǐng)域,為了實(shí)現更高效的熱泵系統控制,需要設計更智能的測控系統。基于此,研究對空氣能熱泵測控系統進(jìn)行了總體方案設計,接著(zhù)引入了模糊控制與Smith預估補償控制策略對比例-積分-微分控制器(Proportion Integration Differentiation,PID)進(jìn)行優(yōu)化。在信息系統設計中,采用了消息隊列遙測傳輸(Message Queuing Telemetry Transport,MQTT)作為通信代理協(xié)議。結果顯示,當PID控制器在1050s時(shí)受到正弦干擾后,其溫度迅速提升至34.8℃,160s后溫度下降至24.7℃,320s后回升至設定溫度。當模糊PID控制器受到正弦干擾后,其溫度在短時(shí)間內迅速提升,隨后在70s后跌至24.6℃,510s后才達到設定溫度。而結合了Smith的模糊PID控制器在1250s時(shí)跌至溫度最低值,且其在1510s時(shí)便達到設定的溫度值。總的來(lái)說(shuō),研究設計的熱泵測控系統在溫度控制與系統運行方面均具有較強的魯棒性與可行性,為現代熱泵系統的智能化控制提供了一種有效的方法。

    Abstract:

    Heat pump systems are widely used in the heating field. In order to achieve more efficient control of heat pump systems, it is necessary to design more intelligent measurement and control systems. Based on this, the overall scheme design of the air energy heat pump measurement and control system was studied, and then fuzzy control and Smith predictive compensation control strategies were introduced to optimize the Proportional Integration Difference (PID) controller. In the design of information systems, Message Queuing Telemetry Transport (MQTT) is used as the communication proxy protocol. The results showed that when the PID controller was subjected to sinusoidal interference at 1050s, its temperature rapidly increased to 34.8 ℃, decreased to 24.7 ℃ after 160s, and returned to the set temperature after 320s. When the fuzzy PID controller is subjected to sinusoidal interference, its temperature rapidly increases in a short period of time, then drops to 24.6 ℃ after 70 seconds, and reaches the set temperature after 510 seconds. The fuzzy PID controller combined with Smith dropped to the lowest temperature value at 1250s and reached the set temperature value at 1510s. Overall, the research and design of the heat pump measurement and control system have strong robustness and feasibility in temperature control and system operation, providing an effective method for the intelligent control of modern heat pump systems.

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宗振威.基于PID控制器和無(wú)線(xiàn)通信技術(shù)的熱泵測控系統設計計算機測量與控制[J].,2024,32(11):211-216.

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  • 收稿日期:2024-05-06
  • 最后修改日期:2024-05-24
  • 錄用日期:2024-05-27
  • 在線(xiàn)發(fā)布日期: 2024-11-19
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