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传统的电力DCS控制器采用变结构神经网络控制,忽略了进行滤波处理对控制结果的重要性和信号干扰对控制结果的影响,导致跟踪控制性能差的问题。结合西门子小型PLC控制芯片,提出一种基于本机振荡幅度调制的电力DCS控制器设计,设计DCS电力控制系统总体模型,构建DCS电力控制功率放大器,信号抗干扰设计采用FIR带通滤波器,采用本机振荡幅度调制方法,得到DCS控制器的复位电路,经过选频滤波处理,把那些落在系统通带中的频谱分量进行增益分配均衡处理,最后设计了基于小型PLC的电力DCS控制器核心电路。实验结果表明,设计电力DCS控制器输出基线在零电平上,达到补偿要求,在突加负载后,该控制方法具有更短的调节时间,当控制过程稳定后,输出电压的整流耦合同步跟踪控制性能较好。
The traditional power DCS controller adopts variable structure neural network control, ignoring the importance of filtering processing to the control results and the influence of signal interference on the control results, leading to the problem of poor tracking control performance. Combined with Siemens PLC chip, a power DCS controller design based on local oscillation amplitude modulation is proposed. The overall model of DCS power control system is designed. The DCS power control power amplifier is constructed. The signal anti-jamming design uses FIR band-pass filter. The local oscillator amplitude modulation method, the DCS controller reset circuit, after the frequency filter processing, those who fall in the system passband spectral components gain distribution equalization process, and finally designed a small PLC-based power DCS controller core Circuit. The experimental results show that the design of the power DCS controller output baseline at zero level to meet the compensation requirements, sudden load, the control method has a shorter adjustment time, when the control process is stable, the output voltage of the rectifier coupled synchronous tracking Control performance is better.