CAJ | 학술논문

针对现有微波功率控制方法存在的过渡时间长，稳定性差等问题，提出微波源功率专家比例积分微分(PID)主动控制法，在防止出现“热失控”的前提下，根据物料的介电特性、反射功率等先验知识，建立专家控制规则库，将控制规则预存于控制器，解决微波加热过程实时控制难，控制精确度差等问题。仿真实验结果证明，专家 PID 控制比经典 PID 控制达到稳态的用时节约70%，效率提高89%，精确度提高87%。
침대현유미파공솔공제방법존재적과도시간장，은정성차등문제，제출미파원공솔전가비례적분미분(PID)주동공제법，재방지출현“열실공”적전제하，근거물료적개전특성、반사공솔등선험지식，건립전가공제규칙고，장공제규칙예존우공제기，해결미파가열과정실시공제난，공제정학도차등문제。방진실험결과증명，전가 PID 공제비경전 PID 공제체도은태적용시절약70%，효솔제고89%，정학도제고87%。
It is difficult to describe the microwave heating procedure with accurate mathematical modeling since it is nonlinear and time-delayed. The existing microwave power control methods generally adjust and control parameters according to the results identified by the system. Because those methods feature a long transition time and low stability, a method of expert-Proportion Integration Differentiation (PID) active control on the source power of microwave is proposed. When 'thermal runaway' is prevented, the database of experts’ control rules is set up in line with such prior knowledge as dielectric properties and reflected power of materials. The control rules are in advance stored in the controller, so the problems of hard real-time control and low accuracy of control in the microwave heating procedure can be solved. Compared with the classical PID control, the simulation findings show that the expert-PID control saves about 70% of time taken to reach the state of being stable, improves the efficiency by 89% and increases the accuracy by 87%.