This paper presents an integrated simulation model for full digital controlled PMIG/MAG welding system with Matlab/Simulink, and it consists of power inverter, digital control system and dynamic arc-load model. An int...This paper presents an integrated simulation model for full digital controlled PMIG/MAG welding system with Matlab/Simulink, and it consists of power inverter, digital control system and dynamic arc-load model. An integrated simulation study was done for full digital PMIG/MAG welding, and a method of connecting dynamic arc-load model to the system with controlled current source was presented, in addition, the simulation results were utilized to study the issues of digital control PMIG/MAG welding in this paper. The experimental results validated the developed simulation model, and this simulation study can be applied in implementation of the full digital PMIG/MAG welding and analysis of system dynamic process.展开更多
就电动机变频调速自动控制系统的设计与实现展开研究。首先,给出了电动机变频调速自动控制系统整体框架,并详细阐述了数字信号处理器(Digital Signal Processor,DSP)技术。在软件设计部分,针对DSP技术存在控制复杂度高的问题,引入比例-...就电动机变频调速自动控制系统的设计与实现展开研究。首先,给出了电动机变频调速自动控制系统整体框架,并详细阐述了数字信号处理器(Digital Signal Processor,DSP)技术。在软件设计部分,针对DSP技术存在控制复杂度高的问题,引入比例-积分-微分(Proportional-Integral-Derivative,PID)控制策略简化控制流程,并提出了基于模糊控制的电动机变频调速自动控制方法,以实现更精确的变频调速控制。系统应用测试结果表明,新系统控制误差低至1.2%,波动范围小且故障率低至0.01次/h,使得系统稳定性指数(System Stability Index,SSI)仅为0.95,说明本研究为电动机变频调速领域的自动化和智能化提供了有价值的参考。展开更多
文摘This paper presents an integrated simulation model for full digital controlled PMIG/MAG welding system with Matlab/Simulink, and it consists of power inverter, digital control system and dynamic arc-load model. An integrated simulation study was done for full digital PMIG/MAG welding, and a method of connecting dynamic arc-load model to the system with controlled current source was presented, in addition, the simulation results were utilized to study the issues of digital control PMIG/MAG welding in this paper. The experimental results validated the developed simulation model, and this simulation study can be applied in implementation of the full digital PMIG/MAG welding and analysis of system dynamic process.
文摘就电动机变频调速自动控制系统的设计与实现展开研究。首先,给出了电动机变频调速自动控制系统整体框架,并详细阐述了数字信号处理器(Digital Signal Processor,DSP)技术。在软件设计部分,针对DSP技术存在控制复杂度高的问题,引入比例-积分-微分(Proportional-Integral-Derivative,PID)控制策略简化控制流程,并提出了基于模糊控制的电动机变频调速自动控制方法,以实现更精确的变频调速控制。系统应用测试结果表明,新系统控制误差低至1.2%,波动范围小且故障率低至0.01次/h,使得系统稳定性指数(System Stability Index,SSI)仅为0.95,说明本研究为电动机变频调速领域的自动化和智能化提供了有价值的参考。
