Title :
Filter design of a servomotor encoder
Author :
Wang, Ming-Shyan ; Chen, Jian-Hao ; Wang, Shih-Hao
Author_Institution :
Dept. of Electr. Eng., Southern Taiwan Univ. of Technol., Taiwan
Abstract :
The design and implementation of a set of three linear phase finite impulse response (FIR) filters to prevent the noise from corrupting the output signals of servomotor encoders is proposed. According to the estimated speed, one of the FIR filter is selected to eliminate the noise with a width less than three sample periods and/or with a frequency less than one fifth of the sampling frequency. Simulations and experiments at speeds of 30 rpm, 300 rpm, and 1000 rpm are given. These results illustrate the effectiveness of the designed FIR filters.
Keywords :
FIR filters; encoding; servomotors; FIR filters design; linear phase finite impulse response filters; noise elimination; sampling frequency; servomotor encoders; Active noise reduction; Clocks; Counting circuits; Finite impulse response filter; Frequency estimation; Low pass filters; Motor drives; Optical feedback; Sampling methods; Servomotors;
Conference_Titel :
Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on
Print_ISBN :
0-7803-8660-4
DOI :
10.1109/APCCAS.2004.1412976
