Design of Temperature Measurement and Control of Heating Field in the Radio-Frequency Glioma Hyperthermia System

In the radio-frequency glioma hyperthermia system, the process recipe is characterized by high ramp rates and perfect dynamic and static response performance. In order to improve the efficiency to complete glioma hyperthermia process, a hybrid control configuration is designed to rapidly track the thermal recipe. The hybrid control configuration consists of feedforward, feedback and Bang-Bang actions, of which, the feedforward control is a model predictive control action and improves the dynamic performance of temperature tracking significantly. Experimental results demonstrate that the hybrid control strategy performs better than the conventional PID controller both in setpoint response and in steady-state performance of temperature control, so that the accuracy and efficiency of glioma hyperthermia system are improved accordingly. What´s more, the system is operation easily, and its quality of the control tracks is visible owing to LabVIEW.