Accuracy of measuring time intervals by a pulse counting method

1990 ◽  
Vol 33 (4) ◽  
pp. 383-387
Author(s):  
O. N. Muzychenko
Keyword(s):  
Counting Method ◽  
Measuring Time ◽  
Time Intervals ◽  
Pulse Counting

A precision clock for measuring time intervals

1960 ◽  
Vol 9 (2) ◽  
pp. 221-225 ◽  
Author(s):  
R.W. Findley ◽  
R.A. Reiter ◽  
T.A. Romanowski
Keyword(s):  
Measuring Time ◽  
Time Intervals ◽  
Precision Clock

scholarly journals An Optimized Pulse-Counting Method for Compensation Vector Calculation in the Automatic Balancer

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Lifang Chen ◽  
Bo Zhou ◽  
Zhaoju Li ◽  
Yixiang Guo ◽  
Ziwen Yan
Keyword(s):  
Control System ◽  
High Speed ◽  
Industrial Applications ◽  
Counting Method ◽  
Pulse Counting ◽  
High Speed Data Acquisition ◽  
One Step ◽  
High Speed Data ◽  
The Stability ◽  
Automatic Balancing

The accuracy of the counterweight positions in an automatic balancing system deeply affects dynamic balancing. Compensation vector is synthesized by the two counterweights located in the electromagnetic dual-weight automatic balancer. Therefore, if the position of the counterweight is inaccurate, it may result in a wrong adjustment and a larger imbalance of the rotor system. In this paper, an optimized pulse counting method for compensation vector calculation in an electromagnetic dual-weight balancing system is proposed based on a programmable logic controller (PLC). A propeller automatic balancing simulation test bench is used to verify the effect of the method by obtaining the positions of the counterweights and synthesizing the compensation vector in the working mode. The error is less than 1/80 which means that it does not exceed one step in the 80-position-balancer at 1200 rpm. The proposed control system can work without computers or high-speed data acquisition equipment, which improves the stability and flexibility of the control system, facilitates the design of the automatic balancing system, and shows excellent potential for industrial applications.

Geometric measurement of optical fibers with pulse-counting method

1991 ◽  
Author(s):  
Qiuhua Nie ◽  
John C. C. Nelson ◽  
Simon C. Fleming
Keyword(s):  
Optical Fibers ◽  
Counting Method ◽  
Pulse Counting ◽  
Geometric Measurement

Diagnosis of Rolling Bearing by Measuring Time Interval of AE Generation

1999 ◽  
Vol 121 (3) ◽  
pp. 468-472 ◽  
Author(s):  
Takeo Yoshioka ◽  
Atsushi Korenaga ◽  
Hiroki Mano ◽  
Takashi Yamamoto
Keyword(s):  
Rolling Contact Fatigue ◽  
Contact Fatigue ◽  
Rolling Bearing ◽  
Rolling Contact ◽  
Time Interval ◽  
Measuring Time ◽  
Time Intervals ◽  
Measured Time ◽  
Ae Signal ◽  
Kinetics Of

We have developed a new method for measuring time intervals of Acoustic Emission (AE) generation for diagnosis of a radial rolling bearing. The method makes the AE signal itself a trigger of the oscillation of the clock pulse and measures the time interval of AE generation by integration of the clock pulses. The measurement device consists of the threshold, clock, time interval measurement and memory circuit, and was applied to rolling contact fatigue experiments. It was confirmed by the experiments that the measured time intervals of AE generation on the inner raceway or the ball agreed with the value calculated based on the kinetics of the rolling bearing. Moreover, we could identify the elements in which a fatigue crack was propagating by the method before the spalling appeared. The identified elements agreed with the failed elements.

Measuring time intervals by circulating pulses with sequential phase shifts

1971 ◽  
Vol 14 (10) ◽  
pp. 1606-1607
Author(s):  
E. G. Lebed'ko ◽  
F. I. Khautyn ◽  
G. A. Aver'yanov
Keyword(s):  
Phase Shifts ◽  
Measuring Time ◽  
Time Intervals ◽  
Sequential Phase
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