集中供热系统室温控制策略研究
发布时间：2018-08-07 15:10
【摘要】：良好的采暖房间室温控制不但是节能的主要手段,也是提高人们居住环境品质的体现。为更好的适应城市集中供热系统的分户热计量系统,提高用户节能的意识,本文针对室温控制策略进行研究。根据传热学理论建立采暖房间的室温控制模型,该模型主要包括室内空气动态过程子模型、散热器动态过程子模型和恒温阀温度传感器动态过程子模型,通过实验获得采暖房间控制点温度的数据,从而确定了采暖房间室温的传递函数。 针对供热系统的大惯性、大迟滞、时变性和不确定性等特点,提出了采暖房间室温控制的三种算法即PID控制器、DMC控制系统和DMC-PID串级控制系统,并进行仿真,对其控制性能分析比较,DMC-PID控制系统的室温响应曲线超调量比DMC控制系统超调量减少20%,比PID控制器超调量减少26%；达到稳态的响应时间比DMC控制系统快速20%,比PID控制器快速55.6%。 本文提出了DMC-PID串级控制的室温控制策略,它综合PID控制强抗干扰能力和DMC控制算法的强跟踪性能优点,在跟踪性、抗干扰性和鲁棒性方面具有良好的控制品质,为供暖室内温度控制系统的设计开辟了一条新途径,在整个供热网中具有广泛的应用前景。
[Abstract]:Good room temperature control is not only the main means of energy saving, but also the embodiment of improving people's living environment quality. In order to better adapt to the household heat metering system of urban central heating system and improve the awareness of energy saving, the control strategy of room temperature is studied in this paper. Based on the theory of heat transfer, the room temperature control model of heating room is established. The model mainly includes the sub-model of indoor air dynamic process, the submodel of radiator dynamic process and the dynamic process sub-model of constant temperature valve temperature sensor. The data of the control point temperature of the heating room are obtained by experiments, and the transfer function of the room temperature is determined. In view of the characteristics of large inertia, large hysteresis, time variation and uncertainty of heating system, three algorithms of room temperature control of heating room, namely, PID controller control system and DMC-PID cascade control system, are proposed and simulated. The control performance of DMC-PID control system is analyzed and compared. The room temperature response curve overshoot of DMC-PID control system is 20 less than that of DMC control system, and 26 times less than that of PID controller, and the steady response time is 20 times faster than that of DMC control system and 55.6 percent faster than that of PID controller. This paper presents a room temperature control strategy for DMC-PID cascade control. It combines the strong anti-jamming ability of PID control and the strong tracking performance of DMC control algorithm. It has good control quality in tracking, anti-jamming and robustness. It opens up a new way for the design of heating indoor temperature control system and has a wide application prospect in the whole heating network.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU995;TP273
本文编号：2170426
[Abstract]:Good room temperature control is not only the main means of energy saving, but also the embodiment of improving people's living environment quality. In order to better adapt to the household heat metering system of urban central heating system and improve the awareness of energy saving, the control strategy of room temperature is studied in this paper. Based on the theory of heat transfer, the room temperature control model of heating room is established. The model mainly includes the sub-model of indoor air dynamic process, the submodel of radiator dynamic process and the dynamic process sub-model of constant temperature valve temperature sensor. The data of the control point temperature of the heating room are obtained by experiments, and the transfer function of the room temperature is determined. In view of the characteristics of large inertia, large hysteresis, time variation and uncertainty of heating system, three algorithms of room temperature control of heating room, namely, PID controller control system and DMC-PID cascade control system, are proposed and simulated. The control performance of DMC-PID control system is analyzed and compared. The room temperature response curve overshoot of DMC-PID control system is 20 less than that of DMC control system, and 26 times less than that of PID controller, and the steady response time is 20 times faster than that of DMC control system and 55.6 percent faster than that of PID controller. This paper presents a room temperature control strategy for DMC-PID cascade control. It combines the strong anti-jamming ability of PID control and the strong tracking performance of DMC control algorithm. It has good control quality in tracking, anti-jamming and robustness. It opens up a new way for the design of heating indoor temperature control system and has a wide application prospect in the whole heating network.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU995;TP273
【参考文献】
相关期刊论文 前10条
1 李文江;张岩;赵乃卓;;基于室温模糊PID控制的供暖监控系统[J];辽宁工程技术大学学报;2007年01期
2 宋萍萍;赵敏;;基于模型的制冷系统过热度DMC-PID串级控制[J];低温与超导;2012年10期
3 杨磊;李好文;;基于DMC-模糊PID的模拟等温挤压控制系统研究[J];锻压技术;2013年02期
4 白金;韩俊伟;;基于MATLAB/Simulink环境下的PID参数整定[J];哈尔滨商业大学学报(自然科学版);2007年06期
5 粟梅,徐扬,罗安;DMC-PID串级控制在中药生产浓缩工段的应用[J];计算机测量与控制;2005年08期
6 张文安,徐建明,俞立;PID-DMC算法及其在液位控制系统中的应用[J];控制工程;2005年01期
7 陈亮;;气候补偿器在供热系统中的应用[J];建筑科学;2010年10期
8 李晖,程宏业;住宅供暖系统的室温控制和热计量技术[J];山西建筑;2005年09期
9 王琼;蔡觉先;;气候补偿器的调节性能分析[J];山西建筑;2008年34期
10 许峰;;论城市集中供热的可持续发展[J];山西建筑;2010年13期
，本文编号：2170426
本文链接：https://www.wllwen.com/kejilunwen/sgjslw/2170426.html
