【摘要】 为了模拟深海的高压高温极端环境,设计研制了一套深海极端环境模拟平台控制系统.对模拟平台控制系统的结构原理进行了分析,提出了一种针对高压高温微流动体系的压力自动控制方法和采用PID控制加双Smith预估反馈的温度控制策略.实现了压力的实时闭环监测和控制,并克服了温度控制系统中存在的两级滞后延迟环节的影响,从而提高了控制系统的动态响应速度和稳态精度.实验结果表明,所研制的模拟平台控制系统是可行的,并具有较高的控制精度.更多还原

【Abstract】 To simulate the deep-sea extreme environment of high pressure and high temperature,a control system of simulating platform for deep-sea extreme environment was designed.After analyzing the principle of the control system of simulating platform,a kind of automatic pressure control method for high pressure and high temperature miniflow system and a kind of temperature control strategy with PID control and dual Smith-predictors feedback were put forward.The real-time closed-loop control for system pressure was realized and the disturbance of two-stage delay component in the temperature control system was resolved.Consequently the dynamic response speed and the steady-state accuracy of the control system were improved.Experimental results show that the developed control system of simulating platform is feasible and has relatively high control precision.更多还原