基于双核变频注塑机控制优化方法研究

Based on the Dual-Core Frequency Conversio Machine Control Optimization Method Study

针对传统的注塑机采用单核变频控制技术,很难处理相同时域内的多个变频控制信号,造成SPWM波形的质量不高,注塑机控制精度效果不好的问题,提出了一种基于ARM+DSP双核变频技术的注塑机节能控制方法,使得变频系统能够同时处理时域内多个变频控制信号;运用离线计算且带误差补偿的不对称规则算法,改善载波比N较小情况下SPWM波形的质量;实验结果表明,在不改变变频器主电路及结构的情况下,双核控制的硬件结构及离线计算的软件设计,显著提高了变频器功能扩展的自由度和变频器的控制性能,为注塑机节能改造提供了一种切实可行的方案。

In traditional injection molding machine using mononuclear frequency conversion control technology, it is difficult to deal with the same time domain DuoGe of frequency conversion control signal, causing the waveform quality is not high SPWM, injection molding machine control precision of the result is bad. Put forward based on the ARM and DSP dual--core variable frequency technology energy Control method of injection molding machine. Make frequency conversion system must be able to work in the time domain DuoGe frequency conver- sion control signal. Use offline and without error compensation calculated the asymmetric rule algorithm, improve the carrier condition of less than N SPWM wave of the quality. The experimental results show that, with no change of frequency converter main circuit and structures, dual--core control the hardware structure and software design and calculation, improved the inverter function expansion of freedom and in- verter control performance, energy saving transformation for injection molding machine provides a feasible scheme