Research on Improving Low Speed Property of Tachometer Based on Electro-Optical Encoder

Author

Li Xin´an ; Li Xiujuan

Author_Institution

Autom. Eng. of Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2010

fDate

7-9 Nov. 2010

Firstpage

1

Lastpage

4

Abstract

Incremental encoder combined with M/T method is the most popular and more appropriate digital tachometer. But if the speed is low or ultra-low, there will be several questions, such as low precision, bad timeliness, the jitter caused by Machine vibration. Aiming at resolving these questions, this paper respectively proposes an eliminate-jitter method based on FPGA, an enhanced method timeliness based on extrapolation method and an enhanced M/T method to expand speed range. These methods improve the performance of the encoder at low speed, and make use of encoder in research and practice better.

Keywords

digital instrumentation; electro-optical devices; encoding; extrapolation; field programmable gate arrays; jitter; tachometers; vibrations; FPGA; M-T method; digital tachometer; electro-optical encoder; eliminate jitter method; extrapolation method; incremental encoder; low speed property; machine vibration; Extrapolation; Field programmable gate arrays; Jitter; Process control; Radiation detectors; Servomotors; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

E-Product E-Service and E-Entertainment (ICEEE), 2010 International Conference on

Conference_Location

Henan

Print_ISBN

978-1-4244-7159-1

Type

conf

DOI

10.1109/ICEEE.2010.5660399

Filename

5660399