CN104378047A - Speed control method of linear infinitely variable speed motor - Google Patents
Speed control method of linear infinitely variable speed motor Download PDFInfo
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- CN104378047A CN104378047A CN201410624902.2A CN201410624902A CN104378047A CN 104378047 A CN104378047 A CN 104378047A CN 201410624902 A CN201410624902 A CN 201410624902A CN 104378047 A CN104378047 A CN 104378047A
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Abstract
The invention provides a speed control method of a linear infinitely variable speed motor and belongs to the technical field of automatic control. The speed control method of the linear infinitely variable speed motor comprises the following steps that (1), the motor is driven at preset starting speed; (2), the motor is controlled at constant speed; (3), if a speed changing instruction is received, new target speed and parameters are set, the second step is carried out, and if no speed changing instruction is received, the next step is carried out; (4), if a motor stopping instruction is received, voltage at the control end of the motor is decreased, the motor is stopped, and if no motor stopping instruction is received, the second step is carried out. According to the speed control method of the linear infinitely variable speed motor, the speed control efficiency is high, and accurate speed adjustment can be achieved.
Description
Technical field
The present invention relates to a kind of method for control speed of linear stepless variable speed driver, belong to technical field of automatic control.
Background technology
In commercial Application, electrodeless variable-speed motor all will be used in a lot of field, and infinite variable speed motor plays speed governing effect on equipment, and the output speed of stepless speed-change motor and moment can do linear change between a minimum and a maximum.The output variable of infinite variable speed motor makes system stability close to aequum, thus reduces the minimizing mechanical shock of motor starting number of times and power consumption.But the speeds control efficiency of a lot of electrodeless variable-speed motor is low at present, and can not realize accurate control rate.Therefore, need a kind of speeds control efficiency high, and the motor control method of accurate speed governing can be realized.
Summary of the invention
Based on above weak point, it is high that the technical problem to be solved in the present invention is to provide a kind of speeds control efficiency, and can realize the motor speed control method of accurate speed governing.
For solving above technical problem, present invention employs following technical scheme:
A method for control speed for linear electrodeless variable-speed motor, comprises the following steps:
Step 1: with predetermined toggle speed CD-ROM drive motor;
Step 2: fixed speed control motor;
Step 3: if the speed that receives changes instruction, new target velocity and parameter are set, perform step 2; If no, perform step 4;
Step 4: if receive motor halt instruction, reduces motor control terminal voltage, stops motor; If no, perform step 2.
The step of described fixed speed control motor comprises:
Detect speed and the present speed V3 of each time point of motor;
Speedometer according to each time point of motor calculates motor current acceleration a3;
According to formula V
offset=-C2 × (C1 × a3+V3-V0) calculates the side-play amount of motor control voltage, wherein V
offsetbe treat offset voltage, C1 and C2 is according to motor in different use occasions setting, and V0 is presetting target velocity;
Motor control end is outputted to after described side-play amount and current control voltage being merged.
The step of described detection motor speed comprises:
A, the speed pulse signal exported by fixed cycle detection motor by motor rotary speed counter timer,
B, motor speed detection counter add 1;
If c detects motor, output signal declines, and preserve the value of velocity measuring counter to corresponding data buffering, meanwhile, data buffering counter adds 1, velocity measuring counter O reset, if do not have, performs step b;
Whether d, the value detected in data buffering counter are greater than 12, if so, by the value summation in all data bufferings; If not, step b is performed.
With predetermined toggle speed CD-ROM drive motor particular by motor control end hierarchical loading voltage until the mode that motor reaches predetermined toggle speed is carried out.
Adopt above technical scheme, the beneficial effect acquired by the present invention is:
The method for control speed of linear stepless variable speed driver provided by the invention, can not only realize gearshift adjustment, and speeds control efficiency is high, and can realize accurate speed governing.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, technology of the present invention is described in further detail:
Fig. 1 is the general flow chart of the method for control speed of linear stepless variable speed driver of the present invention;
Fig. 2 is the fixed speed control flow chart of the method for control speed of linear stepless variable speed driver of the present invention;
Fig. 3 is the velocity measuring flow chart of the method for control speed of linear stepless variable speed driver of the present invention.
Embodiment
A method for control speed for linear electrodeless variable-speed motor, comprises the following steps:
Step 1: with predetermined toggle speed CD-ROM drive motor;
Step 2: fixed speed control motor (step S3);
Step 3: if the speed that receives changes instruction (step S4), new target velocity and parameter (step S11) are set, re-execute step 2, under new target velocity and optimum configurations, fixed speed control is carried out to motor; If no, perform next step;
Step 4: if receive motor halt instruction (step S5), reduces motor control terminal voltage (step S6), stops motor; If no, perform step 2.
Wherein, the step of described fixed speed control motor comprises:
Step S301: the speed and the present speed V3 that detect motor each time point, as detected the speed V1 in motor T1 moment, the speed V3 in the speed V2 in T2 moment, T3 moment, present speed is V3, T1, the time interval of T2 and T3 is T;
Step S302: the speedometer according to each time point of motor calculates motor current acceleration a3;
Step S303: according to formula V
offset=-C2 × (C1 × a3+V3-V0) calculates the side-play amount of motor control voltage, wherein V
offsettreat offset voltage, the dynamics of readjustment when C1 is speed generation skew, best value is obtained by on-the-spot test, C2 is that motor exports the matching value with load, relevant with the regulation time interval T of circuit, load and motor, C1 and C2 sets in different use occasions according to different motors, such as, in clarifier, set C1=3, C2=0.4; C1=1.5 is set as, C2=0.25 in air conditioner; C1=5 is set as, C2=0.9 in rig; These two values will repeatedly commissioning be to determine best value when designing, and make motor have the output characteristic suited the requirements most, V0 is presetting target velocity;
Step S304: output to motor control end after described side-play amount and current control voltage being merged.
Above step cycle is carried out, and makes the speed of motor keep running with target velocity V0.
Wherein, the step of described detection motor speed comprises:
A, the speed pulse signal (step S201) exported by fixed cycle detection motor by motor rotary speed counter timer,
B, motor speed detection counter add 1 (step S202);
If c detects motor, output signal declines (step S203), preserve the value of velocity measuring counter to corresponding data buffering (step S204), this value gets the instantaneous value that inverse is present motor speed, simultaneously, data buffering counter adds 1, velocity measuring counter O reset, if do not have, performs step b;
Whether d, the value detected in data buffering counter are greater than 12 (step S205), and if so, by value summation (step S206) in all data bufferings, this value gets the exact value that inverse is present motor speed; If not, perform step b, wherein 12 is that the pulse signal number exported is enclosed in revolution one, and this step accurately can detect the speed that motor is current;
E, get back to step b, constantly the speed of present motor is detected.
Wherein, with predetermined toggle speed CD-ROM drive motor particular by motor control end hierarchical loading voltage until the mode that motor reaches predetermined toggle speed is carried out.Namely first an initial voltage (S1) is applied to motor, detect motor and whether reach toggle speed (step S2), if motor reaches toggle speed, fixed speed control (step S3) is realized to motor, if do not have, then increase the voltage (step S10) being applied to motor control end, until motor reaches predetermined toggle speed.
Last it is noted that these are only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; but it is within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a method for control speed for linear electrodeless variable-speed motor, is characterized in that comprising the following steps:
Step 1: with predetermined toggle speed CD-ROM drive motor;
Step 2: fixed speed control motor;
Step 3: if the speed that receives changes instruction, new target velocity and parameter are set, perform step 2; If no, perform step 4;
Step 4: if receive motor halt instruction, reduces motor control terminal voltage, stops motor; If no, perform step 2.
2. the method for control speed of linear electrodeless variable-speed motor according to claim 1, is characterized in that, the step of described fixed speed control motor comprises:
Detect speed and the present speed V3 of each time point of motor;
Speedometer according to each time point of motor calculates motor current acceleration a3;
According to formula V
offset=-C2 × (C1 × a3+V3-V0) calculates the side-play amount of motor control voltage, wherein V
offsetbe treat offset voltage, C1 and C2 is according to motor in different use occasions setting, and V0 is presetting target velocity;
Motor control end is outputted to after described side-play amount and current control voltage being merged.
3. the method for control speed of linear electrodeless variable-speed motor according to claim 2, is characterized in that, the step of described detection motor speed comprises:
A, the speed pulse signal exported by fixed cycle detection motor by motor rotary speed counter timer,
B, motor speed detection counter add 1;
If c detects motor, output signal declines, and preserve the value of velocity measuring counter to corresponding data buffering, meanwhile, data buffering counter adds 1, velocity measuring counter O reset, if do not have, performs step b;
Whether d, the value detected in data buffering counter are greater than 12, if so, by the value summation in all data bufferings; If not, step b is performed.
4. the method for control speed of linear electrodeless variable-speed motor according to claim 1, is characterized in that: with predetermined toggle speed CD-ROM drive motor be by motor control end hierarchical loading voltage until the mode that motor reaches predetermined toggle speed is carried out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410624902.2A CN104378047B (en) | 2014-11-06 | 2014-11-06 | Speed control method of linear infinitely variable speed motor |
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| CN201410624902.2A CN104378047B (en) | 2014-11-06 | 2014-11-06 | Speed control method of linear infinitely variable speed motor |
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| CN104378047B CN104378047B (en) | 2017-02-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638330Y (en) * | 2003-07-18 | 2004-09-01 | 中国科学院金属研究所 | Electromagnetic variable-speed motor controller |
| JP2005051832A (en) * | 2003-07-29 | 2005-02-24 | Toyota Motor Corp | Vehicle and method for controlling the same |
| US20060068972A1 (en) * | 2004-09-29 | 2006-03-30 | Honda Motor Co., Ltd. | Transmission controller for continuously variable transmission system |
| CN103856136A (en) * | 2012-12-04 | 2014-06-11 | 哈尔滨恒誉名翔科技有限公司 | Control system for permanent magnet synchronous motor |
-
2014
- 2014-11-06 CN CN201410624902.2A patent/CN104378047B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2638330Y (en) * | 2003-07-18 | 2004-09-01 | 中国科学院金属研究所 | Electromagnetic variable-speed motor controller |
| JP2005051832A (en) * | 2003-07-29 | 2005-02-24 | Toyota Motor Corp | Vehicle and method for controlling the same |
| US20060068972A1 (en) * | 2004-09-29 | 2006-03-30 | Honda Motor Co., Ltd. | Transmission controller for continuously variable transmission system |
| CN103856136A (en) * | 2012-12-04 | 2014-06-11 | 哈尔滨恒誉名翔科技有限公司 | Control system for permanent magnet synchronous motor |
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| CN104378047B (en) | 2017-02-08 |
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Application publication date: 20150225 Assignee: Infinitus (China) Co., Ltd. Assignor: GUANGZHOU LEIFUMANDE ELECTRICAL APPLIANCES CO., LTD. Contract record no.: 2015440000068 Denomination of invention: Speed control method of linear infinitely variable speed motor License type: Exclusive License Record date: 20150402 |
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