肿瘤热疗仪测量及控制系统的研究

Research of The Measurement and Control System of The Instrument for The Cancer Thermotherapy

本文介绍了作者研究的"肿瘤热疗仪"测量及控制系统。在此系统中应用"最小二乘法曲线拟合"方法校正了由传感器及电路产生的非线性误差,使电路设计极大的简化降低了整体成本。由于人体的个体差异及各种外来因素的干扰,应用经典控制理论设计的PID控制器无法控制人体局部加热过程。本文介绍了"模糊控制器"的生成原理,并应用到控制系统当中。证明了模糊控制器可以模拟人脑中的丰富经验,对较复杂的过程进行控制。

This thesis summarizes the development history of the cancer thermotherapy. In the developed measurement and control system for the hypertherm with microwave developed by the author. The least squares method is applied to calibrate linearity error coursed by the sensor in the detecting temperature and amplifier. The precision of the measurement and control is improved, this method which makes the circuit simple and cheap, and low cost. Because of body＇s individual difference and all kinds of outside disturbs, the PID controller which designed by classic control theory is unavailable to control the heating of the body＇s temperature. The new method using fuzzy control heat body＇s temperature. The new method using fuzzy control heat body＇s temperature is applied by the author first time . It is available to control complicated working process according to its ability simulating hum brain.