On the running theory of electrical power ergograph and the basic control theory basis , this paper expatiate on the mathematic model and modulating speed of ergograph , and expounds the principle and ways of design of hardware and software for measure and control system , and describes the hardware and software with some frames and interfaces , and importantly recommends the way of designing software 本文根據(jù)電力測功機的工作原理和控制理論基礎,主要闡述了測功機的數(shù)學模型和調速原理以及整個測控系統(tǒng)的硬件和軟件設計的原理和方法,并輔助框圖和界面對軟硬件進行了詳細描述,重點介紹了系統(tǒng)軟件的設計。