电子对撞机束流管冷却系统模糊控制仿真

电子对撞机运行过程中,会产生很多同步辐射热,这些热量均通过束流管冷却系统散失出去.针对束流管冷却这个关键技术难题,研制了一种全新的基于模块化的主动式液体冷却系统;通过合理的分析与简化,应用集总参数法建立了束流管冷却系统的温度动态特性模型,导出了并联调节阀流量特性的数学方程;根据模型给出了相应的模糊控制策略,并在此基础上对束流管冷却系统的控制策略进行了仿真研究.仿真结果表明:采用模糊控制策略的冷却系统具有稳定、超调小的特点,优于传统的比例积分微分(PID)控制策略,能很好地满足电子对撞机的要求,并可以据此指导工程设计.

Simulation on cooling system and fuzzy control of BEPC’s beam pipe

A lot of synchronous radiate heat is generated when beijing electron positron collider operating.The heat is dissipated by the beam pipe's cooling system.According to the key problem of cooling the beam pipe,an active cooling system based on modular form was developed.In order to investigate the cooling system,a dynamic model was established and flow characteristics equations were derived from parallel regulator valves,by means of lumped parameter method with physical analysis and logical simplification.A fuzzy control strategy was offered and simulated according to the model.Simulation results indicate that the cooling system with fuzzy controller can satisfy the system design demands.It is demonstrated that the fuzzy control strategy is more stable and less overshoot than conventional proportional-integral-differential control strategy.The results can also instruct the engineering design.