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(jī)的工作原理和控制理論基礎(chǔ),主要闡述了測功機(jī)的數(shù)學(xué)模型和調(diào)速原理以及整個測控系統(tǒng)的硬件和軟件設(shè)計的原理和方法,并輔助框圖和界面對軟硬件進(jìn)行了詳細(xì)描述,重點介紹了系統(tǒng)軟件的設(shè)計。