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针对ALSTOM气化炉的非线性、多变量动态特性,提出了两种基于常规PID控制器的气化炉多变量控制方案,这两种方案采用不同的操纵变量-被控变量配对并设计了相应的前反馈控制器。对两种控制方案进行了详细的多工况仿真测试,测试结果表明:方案一只要在适当放宽煤量改变速率限制的情况下,不仅可以满足ALSTOM气化炉的基准测试要求,而且各项控制指标均优于方案二;方案二能严格满足各项基准测试要求,但系统总的动态控制品质逊于方案一。与许多复杂控制算法(例如模型预测控制)不同,所研究的控制方案基于常规PID控制,便于工程实现,对工业应用具有更好的指导意义。
According to the nonlinear and multivariable dynamic characteristics of ALSTOM gasifier, two gasifier multivariable control schemes based on conventional PID controllers are proposed. These two schemes adopt different manipulated variables - the controlled variables are paired and correspondingly designed The front feedback controller. The two control schemes are detailed simulated test of multi-conditions, the test results show that: the first one to properly relax the rate of coal change rate limit, not only to meet the ALSTOM gasifier benchmark test requirements, and the control Indicators are better than the program two; Scenario two can strictly meet the requirements of the benchmark test, but the overall dynamic control system is inferior to the program a. Different from many complex control algorithms (such as model predictive control), the proposed control scheme is based on conventional PID control, which is easy to implement and has better guidance for industrial applications.