period measurement meaning in English
测周
Examples
- Frequency and period measurement
提供频率与周期量测 - High accuracy high resolving power frequency and period measurement base on general mpu
基于普通单片机的高精度高分辨率频率及周期测量方法 - Measured for rotational speed and oil flow is based in principle of zero - dead - time period measurement , which implement consecutive period measurement and give 2 dimensions between rotational speed ( or oil flow ) and timetable
对转速和流量的测量基于无间歇周期测量原理，可实现连续测量，给出转速或流量与对应的测得数据的时刻，用二维方式描述转速或流量与测得时刻的关系。 - In the design of real - time control system , the paper takes three - phase full - bridge mosfet inverter as the real - time control main circuit , and adopts a control scheme with 120 ? switching mode combined with half - bridge pulse width modulation ( pwm ) , which would avoid straightthrough short of a certain bridge . phase current is detected by single current sensor ; three - phase position signals generated by position sensors could not only supply commutation information for inverter , but also be used for speed detecting based on signals " period measurement , which makes the speed sensor unnecessary . the whole control system adopts speed and current dual closed - loop control strategy in order to construct a high performance rare - earth permanent magnetic brushless dc motor ( repm bldcm ) full - digital real - time control system
在实时控制系统的设计中，本文以三相全桥mosfet逆变电路作为实时控制主电路，采用120导通方式结合半桥pwm调制的控制方案，从而有效地避免了桥臂的直通短路；本文用单电流传感器实现对相电流的检测，来自位置传感器的三相位置信号不仅为逆变电路提供换相信息，而且也用于基于信号周期测量的转速检测，这样就省去了速度传感器；系统采用的是速度、电流双闭环控制策略，力求构建高性能的稀土永磁无刷直流电动机全数字实时控制系统。 - By adopting the method of saturated aqueous salt solutions , the paper designs the equipment to produce the humidity source and scale pi sensors . based on the design and long period measurement of demarcated equipment , we get the lots of curve and data that shows the linear relation between capacity and moisture and good linearity and resolving power
采用饱和盐溶液法得到相应级别的湿度标准，对传感器进行标定试验并采用相应的数据处理方法，建立了感湿特征量与气相湿度之间的数学关系，最终给出其数学模型和各种指标。