介绍了一种发动机无外载功率检测系统的软、硬件设计，利用测频法测量出某一时刻的瞬时速度，并利用最小二乘法求出角加速度。
By the method of frequency measurement, instant rotational speed is measured in the test system, angular acceleration is calculated by using the feature of the MCU with the least square method.
本文给出了基于8032单片机实现的发动机无外载测功仪的原理及其硬件、软件设计方案。
This paper describes the design ideas of the hardware and software based on 8032 chip microcomputers in the Implementation of an engine no-load dynamometer.
压载泵在设计最大参数下进行舷外循环的时间不少于30分钟。
The ballast system circulates from out-board under pump running at the maximize design parameter, and the time is not less than 30 minutes.
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