低压复合环境实验舱温度及压力控制研究Research on Temperature and Pressure Control of Experiment Chamber in Low-Pressure Composite Environment
柯贤文,卢剑锋,黄海松,卢行行
摘要(Abstract):
为了更加准确的获取模拟动物在高空复合环境的中各项生理指标,需要提高低压复合环境实验舱压力和温度控制效果。根据舱的实物进行模型简化,基于气体动力学和传热学理论建立舱内的压力和温度数学模型,同时建立执行机构数学模型。针对舱内压力和温度控制的响应速度慢和不稳定性,利用模糊理论结合PID控制理论设计压力和温度模糊PID控制器,运用matlab/simulink对压力和温度控制进行仿真,对比不同控制器压力和温度的控制效果。模拟仿真表明:压力和温度模糊PID比压力和温度PID控制时间提高40%左右,温度和压力不产生超调。基于实际低压复合环境实验舱系统搭建控制,实现温度和压力模糊PID的控制,结果表明:模糊PID控制策略实际有效的对低压低温和低压高温压力和温度控制,分析了压力与温度控制的特性。对比实际实验与仿真结果,验证温度和压力数学模型的准确性。
关键词(KeyWords): 低压复合环境实验舱;数学模型;模拟仿真;模糊PID控制
基金项目(Foundation): 贵州省科技厅计划项目—面向医疗应急物流的医院物资快速配送关键装备及系统研究与示范(黔科合支撑[2021]一般445);贵州省科技厅计划项目—山地智能农业装备重点实验室建设(黔科合中引地[2023]010)
作者(Author): 柯贤文,卢剑锋,黄海松,卢行行
DOI: 10.19356/j.cnki.1001-3997.20260402.020
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