KR950015956A - How to measure rotation speed of motor - Google Patents
How to measure rotation speed of motor Download PDFInfo
- Publication number
- KR950015956A KR950015956A KR1019930023971A KR930023971A KR950015956A KR 950015956 A KR950015956 A KR 950015956A KR 1019930023971 A KR1019930023971 A KR 1019930023971A KR 930023971 A KR930023971 A KR 930023971A KR 950015956 A KR950015956 A KR 950015956A
- Authority
- KR
- South Korea
- Prior art keywords
- speed
- output data
- sampling time
- motor
- rotation speed
- Prior art date
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- Control Of Electric Motors In General (AREA)
Abstract
본 발명은 엔코더를 이용하여 회전체의 회전속도를 측정하는 기술에 관한 것으로, 종래의 속도측정장치에 있어서는 샘플링시간이 일정하게 고정되어 있어 현재 카운터 데이타와 이전의 카운터 데이타의 차값이 속도에 비례하여 많은 차이를 갖게 되고, 이로인하여 속도변동이 커서 넓은 범위의 속도를 피드백할때 속도정보의 정밀도가 저하되는 문제점이 있었는 바, 본 발명은 이를 해결하기 위하여 전동기(10)의 회전속도에 따라 샘플링시간을 가변하여 K번째 샘플링의 처음 펄스와 정해진 일정시간후의 펄스사이의 펄스갯수(ΔM)와 시간(ΔT')의 비율을 정확하게 계산함으로써 속도 추정에 대한 높은 정밀도를 얻을 수 있는 효과가 있다.The present invention relates to a technique for measuring the rotational speed of a rotating body by using an encoder. In the conventional speed measuring device, the sampling time is fixed and the difference between the current counter data and the previous counter data is proportional to the speed. There are many differences, and thus the speed variation is large, so that the accuracy of the speed information decreases when feeding back a wide range of speeds. The present invention solves this problem by sampling time according to the rotational speed of the motor 10. It is possible to obtain a high precision for speed estimation by accurately calculating the ratio of the number of pulses ΔM and the time ΔT ′ between the first pulse of the K-th sampling and the pulse after a predetermined time by varying.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 일반적인 전동기의 속도측정 블록도,1 is a speed measurement block diagram of a general electric motor,
제4도는 엔코더의 출력파형도로서 (가)는 낮은 듀티비의 파형도, (나)는 높은 듀티비의 파형도,4 is an output waveform diagram of an encoder, (a) a waveform diagram of a low duty ratio, (b) a waveform diagram of a high duty ratio,
제5도는 본 발명의 회전속도 측정방법에 대한 신호 흐름도.5 is a signal flow diagram for a rotation speed measuring method of the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930023971A KR950015956A (en) | 1993-11-11 | 1993-11-11 | How to measure rotation speed of motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930023971A KR950015956A (en) | 1993-11-11 | 1993-11-11 | How to measure rotation speed of motor |
Publications (1)
Publication Number | Publication Date |
---|---|
KR950015956A true KR950015956A (en) | 1995-06-17 |
Family
ID=66824654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930023971A KR950015956A (en) | 1993-11-11 | 1993-11-11 | How to measure rotation speed of motor |
Country Status (1)
Country | Link |
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KR (1) | KR950015956A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100432389B1 (en) * | 2001-01-09 | 2004-05-22 | 마츠시타 덴끼 산교 가부시키가이샤 | Inverter |
KR101111044B1 (en) * | 2004-07-03 | 2012-03-13 | 루크 라멜렌 운트 쿠플룽스바우베타일리궁스 카게 | Method for measuring speed of an electric machine |
-
1993
- 1993-11-11 KR KR1019930023971A patent/KR950015956A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100432389B1 (en) * | 2001-01-09 | 2004-05-22 | 마츠시타 덴끼 산교 가부시키가이샤 | Inverter |
KR101111044B1 (en) * | 2004-07-03 | 2012-03-13 | 루크 라멜렌 운트 쿠플룽스바우베타일리궁스 카게 | Method for measuring speed of an electric machine |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |