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对实验室现有真空系统进行了改建,采用数字控制器对各调节阀门进行调节,实现高空舱真空度的动态模拟功能。将增量式PID控制算法运用在高空舱内的真空度及其压升率的动态控制中,在此基础上根据真空系统及调节阀门的非线性特性提出了分段式控制算法,并针对舱体内外压差对输出量进行修正,最终将完整的控制律运用在数字控制器中进行试验,结果表明,该控制律具有良好的控制效果。
The existing vacuum system in the laboratory was rebuilt, and the digital controller was used to adjust the regulating valves to realize the dynamic simulation of the vacuum of the high-level cabin. The incremental PID control algorithm is used in the dynamic control of the vacuum degree and the rate of pressure rise in the upper cabin. Based on this, a sectional control algorithm is proposed according to the nonlinear characteristics of the vacuum system and the regulating valve. The pressure difference between the inside and outside of the output to be amended, the final control law will be used in a complete digital controller for testing, the results show that the control law has a good control effect.