PID control algorithm is designed to control the speed of DC motor,based on the NI ELVIS II+experimental platform and graphic system design software LabVIEW. This control algorithon reflects the flexibility of virtual instrument technology and breaks through the traditional instrument limitation in data processing, expression and storage.%基于NI ELVIS II+实验平台及LabVIEW图形化系统设计软件,设计了一种用PID控制算法对直流电机转速的控制系统,体现了虚拟仪器技术的灵活性,突破了传统仪器在数据处理、表达以及存储方面的限制。
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