scholarly journals Enhancing the performance of a rotational speed measurement system through data fusion

2018 ◽  
Vol 1065 ◽  
pp. 072024 ◽  
Author(s):  
L Wang ◽  
Y Yan ◽  
K Reda
Keyword(s):  
Data Fusion ◽  
Measurement System ◽  
Rotational Speed ◽  
Speed Measurement

A Research of High Precision Rotational Speed Measurement System Based on Infrared Sensor and Microcontroller

2013 ◽  
Vol 278-280 ◽  
pp. 680-683
Author(s):  
Zi Qin Ma ◽  
Ren Zhang ◽  
Da Li Kang ◽  
Wu Yang
Keyword(s):  
High Precision ◽  
Measurement System ◽  
Rotational Speed ◽  
Pulse Signal ◽  
Measuring Method ◽  
Infrared Light ◽  
Infrared Sensor ◽  
Flip Flop ◽  
Speed Measurement ◽  
Photoelectric Sensor

With the deep analysis on the rotational speed measurement and the error existed in the measurement process at present, this paper introduces a high precision rotational speed measurement system based on infrared sensor and microcontroller. This system combines with improved measuring method. The sensor is an infrared photoelectric sensor, and uses its characteristics of the autocollimator ensured accuracy of measurement. The photoelectric sensor outputs weak voltage pulse signal when it receives the reflected infrared light. And then the signal is processed by double-reversed amplification and twice pulse shaping circuit. The system uses the relevant logic functions of a D-type flip-flop to control two 16-bit microcontroller chip timing/counter turned on and off simultaneously, and calculates the rotation speed. At last, the result is displayed on LED by Microcontroller. This measurement system has high accuracy, fast sampling speed and wide measuring range.

A Rotation-Speed Measurement System Based on Magneto-Inductive Effect

2020 ◽  
Vol 18 (4) ◽  
pp. 299-303
Author(s):  
Tao Wang ◽  
Bicong Wang ◽  
Yuyi Chen ◽  
Yufeng Luo
Keyword(s):  
Direct Current ◽  
Measurement System ◽  
Rotational Speed ◽  
Inductive Effect ◽  
Rotation Speed ◽  
Rotating Shaft ◽  
High Rotational Speed ◽  
Sensing System ◽  
Dc Motors ◽  
Speed Measurement

There are few reports on high rotational speed measurement of brushless direct current (DC) motors based on giant magneto-inductive effect. In this study, a rotational speed measurement system based on giant magneto-inductive effect is established for measuring the rotational speeds of DC motors. Successive sawtooth waves are found when rotating shaft is close to the GMI sensor. Through using the magneto-inductive sensing system, different high rotational speeds (1500∼24000 r/min) of the motor are accurately measured. Therefore, this giant magneto-inductive sensor may be used for high rotational speed measurement of motors.

Applied Mechanics and Applied Technology in Fuel Injection Pump Bench Rotational Speed Measurement System Design Based on CPLD

2014 ◽  
Vol 910 ◽  
pp. 316-319
Author(s):  
Ji Chang Wang ◽  
Huan Huan Quan
Keyword(s):  
System Design ◽  
Measurement System ◽  
Rotational Speed ◽  
Fuel Injection ◽  
Test Bed ◽  
Injection Pump ◽  
Speed Measurement ◽  
Fuel Injection Pump ◽  
Pump Test ◽  
Hardware Description

In the article, proposing one kind of design plan about rotational speed measurement system design based CPLD. Various modules design has completed according to EDA tools and VHDL hardware description language. The feasibility of the speed measurement system design was verified based on the experiment. At present, the system has been successfully application in the fuel injection pump test-bed.

The Rotational Speed Measurement of Brushless DC Motor Based on STM32 Microcontroller

2013 ◽  
Vol 760-762 ◽  
pp. 891-895
Author(s):  
Meng Bing ◽  
Fang Xiu Jia ◽  
Wen Jin Yao
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Rotational Speed ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Flip Flop ◽  
Brushless Dc ◽  
Speed Measurement ◽  
Trajectory Correction ◽  
Hall Sensors

The brushless DC motor applied on the electric steering gear of trajectory correction projectiles often requires getting real-time rotational speed value. The hall sensors output the hall signals for measurement, after the integration by the D-type flip-flop, an ideal pulse can be produced. Afterwards STM32F103ZE microcontroller is used to calculate the rotational speed value of the motor by the Improved M/T method. The resolution and precision can be analyzed after getting the result. This rotational speed measurement system has high precision and good real-time characteristics. It is significant for the meaning of the correction of the steering gear.

Design of Rotational Speed Measurement System Based on the Hall Sensor

2013 ◽  
Vol 427-429 ◽  
pp. 596-599 ◽  
Author(s):  
Xing Hong Kuang ◽  
Zhe Yi Yao ◽  
Zhe Yi Yao ◽  
Shi Ming Wang
Keyword(s):  
Frequency Response ◽  
High Precision ◽  
Measurement System ◽  
Rotational Speed ◽  
Hall Sensor ◽  
Motor Speed ◽  
Speed Measurement ◽  
Working Principle ◽  
Sensor Measurement

This paper introduces a design of a STC89C52 microcontroller as the main controller, the motor speed is measured by the Hall sensor. This design uses integrated Hall sensor, which has a frequency response, high precision and anti-interference ability. This article describes the working principle of the method and method of use of the Hall sensor measurement speed

The High-Precision Relative Rotational Speed Measurement System Based on Magnetic Signal and Spectrum Correction

2011 ◽  
Vol 291-294 ◽  
pp. 2713-2717
Author(s):  
Guo Bin Chen ◽  
Xiao Ming Zhang ◽  
Xing Cui ◽  
Yong Hui Li ◽  
Jun Liu
Keyword(s):  
Measurement System ◽  
Rotational Speed ◽  
Signal Spectrum ◽  
Magnetic Signal ◽  
Speed Measurement ◽  
Periodic Intensity ◽  
Frequency Components ◽  
The Time Domain ◽  
Spectrum Correction ◽  
The Military

A kind of relative rotational speed measurement system based on magnetic signal and spectrum correction should be proposed for the most of current methods of relative rotational speed measurement cannot meet the measurement requirement of small size, high overload resistance in the military and industrial fields. The system collects the fixed length of time asymmetric periodic intensity signal of magnetic induction based on the characteristics of magnetoresistive sensor’s non-contact measurement, and then analyze the signal spectrum by FFT in order to obtain the accurate main frequency components in the frequency domain after the spectrum correction. The system can determine the direction of the relative rotation by detecting the waveform in the time-domain.

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