This paper presents a method with mixed spectra for analyzing rotational accuracy of spindles, making use of the modified periodogram test combined with dynamic data system modeling.
本文采用动态数据系统建模分析法与改进的周期图检验法相结合，对主轴回转精度进行混合谱分析。
This system can complete the engine rotational speed and torque high accuracy control and the test, also engine temperature, pressure, oil consumption parameters survey.
本系统能够完成发动机的转速、转矩的高精度控制与测试，以及发动机温度、压力、油耗等指标参数的测量。
Requirements for the device of testing rotational speed include: high-accuracy, stabilization, credibility, and shorter testing time.
对测速装置的要求是精度高、稳定可靠和检测时间短。
Oblique rack slippery pieces type manual chuck one high-performance chuck, can meet the high rotational speed and high-accuracy request.
斜齿滑块式手动卡盘是一种高性能的卡盘，可以满足高转速和高精度的要求。
In high-speed cutting, the machining accuracy, cutting life and productivity are influenced by the high rotational speed of spindle.
高速切削时主轴转速很高，加工精度、刀具寿命和生产率受到影响。
The idea of modern machine tools design is: high rotational speed, high accuracy and low noise etc.
现代机床的设计理念是：高转速、高加工精度、低噪声。
Aiming at the control accuracy of rotational speed resulting from direct current speed regulation system, a direct current speed regulating system depending on CNC is proposed.
针对直流调速系统对转速的控制精度问题，提出了一种采用CNC的直流调速系统。
This paper refers to a new kind rotational speed test instrument of the modern printing machine's cylinder with high accuracy and multi-function, which based on the single chip of 89C51.
本文介绍一种以单片机89C51为核心的高精度多功能印刷机滚筒转速测试仪。
Counting and Timing were used to measure torque and rotational speed, and measuring accuracy and speed are compared.
在转矩和转速测试过程中，采用了计时法和计数法分别进行测量，并在测量精度和测量速度方面作了比较。
With a view to develop high accuracy servo system, this paper gives a detailed analysis on mathematical model and character of PWM driver, puts forward a simple rotational velocity estimator.
本文从研制高精度随动系统出发，详细分析了PWM驱动器的数学模型及特性，提出一种简单易行的转速估计器，并在此基础上开发出一种适于中小功率直流力矩电机的新型PWM驱动器。
The series adopted universal couplings transmission, the availability of balance rotational speed and high accuracy, easy to operate, higher efficiency.
本系列采用万向联轴节传动，可获得多种平衡转速，且精度高、操作方便、工作效率高等。
The series adopted universal couplings transmission, the availability of balance rotational speed and high accuracy, easy to operate, higher efficiency.
本系列采用万向联轴节传动，可获得多种平衡转速，且精度高、操作方便、工作效率高等。
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