基于相似定律的鼓风机温度补偿优化策略

发布时间：2018-05-31 01:16

本文选题：温度补偿 + 误差分析　；参考：《计算机仿真》2016年02期

【摘要】：在鼓风机温度优化控制的研究中,针对鼓风机在非标准环境工况下,由于特性曲线偏移而导致鼓风机实际工况点偏移和出现喘振问题,提出鼓风机温度补偿优化模型,可以有效的校正因温度变化发生偏移的鼓风机工作点,同时防止喘振放风。首先根据风机相似原理推导出风量风压修正系数,对鼓风机性能参数进行修正;再结合热力学理论分析鼓风机性能特性曲线随环境温度的变化规律,引入变量因子T,推导出风机转速与环境温度的数学关系,根据环境温度实际变化情况,提出一种分级温度补偿策略。求解模型得到补偿后鼓风机工作点和喘振线方程。最后,根据温度补偿模型提出了防喘振应用方案。仿真和应用节能结果表明,改进方法能有效补偿鼓风机特性曲线偏移,节能效果明显。
[Abstract]:In the study of optimal control of blower temperature, an optimized model of blower temperature compensation is put forward to solve the problem of blower temperature offset and surge due to the deviation of characteristic curve under non-standard environmental conditions. It can effectively correct the working point of blower due to temperature change and prevent surge and air release. First, according to the principle of fan similarity, the air volume air pressure correction coefficient is derived, and the performance parameters of the blower are revised. Then, the variation law of the blower performance characteristic curve with the ambient temperature is analyzed with the thermodynamic theory. By introducing variable factor T, the mathematical relationship between fan speed and ambient temperature is deduced. According to the actual change of ambient temperature, a kind of graded temperature compensation strategy is put forward. The equations of the working point and surge line of the compensated blower are obtained by solving the model. Finally, according to the temperature compensation model, the anti-surge application scheme is proposed. The results of simulation and application show that the improved method can effectively compensate the deviation of blower characteristic curve, and the energy saving effect is obvious.
【作者单位】：天津理工大学天津市复杂控制理论与应用重点实验室;天津理工大学自动化学院;
【基金】：天津市科技支撑计划项目(13ZCZDGX03800,10ZCKFGX03400) 天津市自然科学基金项目(09JCZDJC23900)
【分类号】：TH44

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