CA1253202A - Microprocessor based motor speed control - Google Patents
Microprocessor based motor speed controlInfo
- Publication number
- CA1253202A CA1253202A CA000475641A CA475641A CA1253202A CA 1253202 A CA1253202 A CA 1253202A CA 000475641 A CA000475641 A CA 000475641A CA 475641 A CA475641 A CA 475641A CA 1253202 A CA1253202 A CA 1253202A
- Authority
- CA
- Canada
- Prior art keywords
- motor
- speed control
- closed loop
- open loop
- motor speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/0077—Characterised by the use of a particular software algorithm
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/10—Commutator motors, e.g. repulsion motors
- H02P25/14—Universal motors
- H02P25/145—Universal motors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
A microprocessor based motor controller which provides open loop speed control at low conduction angles, closed loop speed control at high conduction angles, and a smooth transition between open loop and closed loop zones. In open loop, the motor speed is selected and is permitted to vary with applied load. In closed loop, the motor speed is held constant, substantially irrespective of load. In the transition zone, the motor is operated in a hybrid open loop, closed loop fashion. Anti-kickback protection is also provided based on a percentage change in the motor's rotational period.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000578623A CA1257645A (en) | 1984-03-23 | 1988-09-27 | Method of detecting kickback condition in a motor driven tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59280984A | 1984-03-23 | 1984-03-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000578623A Division CA1257645A (en) | 1984-03-23 | 1988-09-27 | Method of detecting kickback condition in a motor driven tool |
Publications (2)
Publication Number | Publication Date |
---|---|
CA1253202A true CA1253202A (en) | 1989-04-25 |
CA1257645C CA1257645C (en) | 1989-07-18 |
Family
ID=24372154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000475641A Expired CA1253202A (en) | 1984-03-23 | 1985-03-04 | Microprocessor based motor speed control |
Country Status (7)
Country | Link |
---|---|
JP (2) | JP2630930B2 (en) |
AU (1) | AU570385B2 (en) |
CA (1) | CA1253202A (en) |
DE (1) | DE3510619A1 (en) |
FR (1) | FR2566977B1 (en) |
GB (1) | GB2156546B (en) |
IT (1) | IT1222364B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5923145A (en) * | 1997-08-15 | 1999-07-13 | S-B Power Tool Company | Controller for variable speed motor |
US20040155532A1 (en) * | 2003-02-07 | 2004-08-12 | Brotto Daniele C. | Method for sensing switch closure to prevent inadvertent startup |
JP5462575B2 (en) | 2009-10-05 | 2014-04-02 | 株式会社マキタ | Electric tool |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5058513A (en) * | 1971-07-01 | 1975-05-21 | ||
DE2324174A1 (en) * | 1973-05-12 | 1974-11-28 | Metabowerke Kg | ELECTRIC MOTOR DRIVEN HAND DRILL WITH CONTROLLED SPEED |
FR2254056A1 (en) * | 1973-12-10 | 1975-07-04 | Mitsubishi Heavy Ind Ltd | Semi-open loop servo control system - permits closed loop operation until reference value is approached |
DE2546478A1 (en) * | 1975-10-17 | 1977-04-21 | Schlafhorst & Co W | Winding reel starting circuit - with changeover switches before speed and armature current comparators for thyristor firing circuit |
DE2744361A1 (en) * | 1977-10-01 | 1979-04-05 | Huebner Johannes | Motor speed control system - has tachogenerator pulse train frequency increased or reduced by fixed factor, so as to be equal to reference frequency |
DE2829657C2 (en) * | 1978-07-06 | 1986-09-11 | Pfaff Haushaltmaschinen Gmbh, 7500 Karlsruhe | Speed limitation for a series motor |
JPS5534852A (en) * | 1978-09-04 | 1980-03-11 | Hitachi Ltd | Speed controller of motor |
JPS5569899U (en) * | 1978-11-02 | 1980-05-14 | ||
US4267914A (en) | 1979-04-26 | 1981-05-19 | Black & Decker Inc. | Anti-kickback power tool control |
US4249117A (en) | 1979-05-01 | 1981-02-03 | Black And Decker, Inc. | Anti-kickback power tool control |
DE2933355A1 (en) * | 1979-08-17 | 1981-03-26 | Scintilla Ag, Solothurn | ELECTRIC HAND TOOL |
US4307325A (en) * | 1980-01-28 | 1981-12-22 | Black & Decker Inc. | Digital control system for electric motors in power tools and the like |
JPS56145792A (en) * | 1980-04-10 | 1981-11-12 | Star Seiki:Kk | Control circuit for induction type geared motor |
DE3101511A1 (en) * | 1981-01-19 | 1982-08-26 | Siemens AG, 1000 Berlin und 8000 München | METHOD AND ARRANGEMENT FOR DETERMINING THE LOAD OF DEVICES DRIVEN BY AN ELECTRIC MOTOR |
JPS598479Y2 (en) * | 1982-04-22 | 1984-03-15 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Electric rotation speed control device for AC motor |
GB2123174A (en) * | 1982-06-07 | 1984-01-25 | Singer Co | Speed selector for power tool |
JPS60100213A (en) * | 1983-11-04 | 1985-06-04 | Komatsu Ltd | Control method of robot |
JPS62247784A (en) * | 1986-04-21 | 1987-10-28 | Matsushita Electric Works Ltd | Speed control circuit for motor |
JPH0512464U (en) * | 1991-07-26 | 1993-02-19 | 株式会社東芝 | Hydraulic elevator power unit |
-
1985
- 1985-03-04 CA CA000475641A patent/CA1253202A/en not_active Expired
- 1985-03-11 AU AU39716/85A patent/AU570385B2/en not_active Ceased
- 1985-03-12 GB GB08506389A patent/GB2156546B/en not_active Expired
- 1985-03-22 IT IT20020/85A patent/IT1222364B/en active
- 1985-03-22 JP JP60057635A patent/JP2630930B2/en not_active Expired - Lifetime
- 1985-03-23 DE DE19853510619 patent/DE3510619A1/en not_active Ceased
- 1985-03-25 FR FR8504418A patent/FR2566977B1/en not_active Expired - Fee Related
-
1993
- 1993-11-04 JP JP5297563A patent/JP2852716B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2566977B1 (en) | 1995-03-24 |
DE3510619A1 (en) | 1985-09-26 |
GB8506389D0 (en) | 1985-04-11 |
AU3971685A (en) | 1985-09-26 |
JPH06297298A (en) | 1994-10-25 |
FR2566977A1 (en) | 1986-01-03 |
AU570385B2 (en) | 1988-03-10 |
GB2156546B (en) | 1987-10-21 |
JP2630930B2 (en) | 1997-07-16 |
JPS611297A (en) | 1986-01-07 |
GB2156546A (en) | 1985-10-09 |
IT8520020A0 (en) | 1985-03-22 |
CA1257645C (en) | 1989-07-18 |
IT1222364B (en) | 1990-09-05 |
JP2852716B2 (en) | 1999-02-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |