基于改进型单神经元PID的热牵伸辊温控系统

摘要

Temperature stability and uniformity of heated godet roll shell directly affect the quality of chemical fiber drawing,so single-neuron PID control algorithm is applied to the temperature control system of heated draw roll and the proportion coefficient of neuron is adjusted sectionally,in order to adjust the temperature adaptively under different set temperatures,speeds and ambient temperatures.Rotary temperature transmitter solves the measurement and transmission of the temperature of the high-speed rotating part based on technology of non-contact power supply and infrared data transmission.Thermostat is designed based on C8051F410 MCU,which can control two rollers at the same time.The results show that the system is safe and reliable and has strong stability and anti-jamming capability,and the control accuracy achieves 0.3 ℃; and the improved single-neuron PID exhibits good control performance,the oveshoot is less than 1.5％ and the adjustment time is shorter than 8 minutes.%热辊导丝盘表面温度的稳定性和均匀性直接影响化纤丝的牵伸质量,为此将单神经元PID控制算法应用于热辊温控系统,并对该算法中神经元比例系数进行分段调整,以实现热辊温度在不同设定温度、不同转速、不同室温条件下的自适应控制.系统中旋变器采用非接触式供电及红外数据传输技术解决高速旋转部件温度的测量与变送.温控器采用完全集成的低功耗C8051F410单片机为控制核心,同时对2路热辊温度进行实时控制.结果表明:系统长期连续运行安全可靠,稳定性和抗干扰能力强,温度控制精度达到0.3℃；改进型单神经元PID温度控制性能良好,超调量小于1.5％,调节时间小于8 min.