Microwave heating is known for high heating speed,high uniformity and bulk heating capa-bilities,which makes it a popular choice in various industries such as foods,materials,chemicals and phar-maceuticals.In practical applications,the Proportional Integral Derivative(PID)control algorithm is com-monly used to regulate heating temperatures for optimal results.However,traditional PID-based micro-wave heating temperature control systems face challenges of slow control speed,high overshoot and signif-icant steady-state error.To address these issues,the Dynamic Matrix Control(DMC)algorithm is used to achieve fast and stable control of microwave heating process.The fundamental principle of the DMC algo-rithm is introduced.A microwave heating system based on solid-state source is constructed with potatoes as the test subject.The model parameters of the system are measured,and the effects of various parame-ters such as time domain,correction factor,control factor and control time domain on system performance are analyzed.The results obtained from the DMC algorithm are compared with those of the PID control al-gorithm,and it demonstrates a notable reduction of 69.8%in overshoot,22.2%in rise time,64.9%in adjustment time,and 22.9%in maximum steady-state error.
关键词
温度控制/微波加热/动态矩阵控制算法
Key words
Temperature Control/Microwave Heating/Dynamic Matrix Control
维普
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