CN1238963C - Drive controller and method for single-phase switch type magnetic resistance motor - Google Patents
Drive controller and method for single-phase switch type magnetic resistance motor Download PDFInfo
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- CN1238963C CN1238963C CNB011259353A CN01125935A CN1238963C CN 1238963 C CN1238963 C CN 1238963C CN B011259353 A CNB011259353 A CN B011259353A CN 01125935 A CN01125935 A CN 01125935A CN 1238963 C CN1238963 C CN 1238963C
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Abstract
The present invention relates to a drive controller and a method for a single-phase switch type reluctance motor. The drive controller comprises a single-phase switch type magnetic resistance motor, a first sensor, a second sensor, an AND gate, a microcomputer, a pulse generating part and a drive part, wherein the first sensor is used for detecting the position of a rotor for driving the reluctance motor at a low speed; the second sensor is used for detecting the position of a rotor for driving the reluctance motor at a high speed together with defined parallax of the first sensor; the AND gate is used for carrying out logic and computation to the output of the first sensor and the second sensor; according to the output of the first sensor and the second sensor, the microcomputer is used for detecting the rotary speed of the current reluctance motor, the position of the rotor for driving and controlling at a low speed and at a high speed; in order to provide a drive pulse of pulse width corresponding to the rotary speed to the reluctance motor, the microcomputer outputs a drive signal; according to the output of the AND gate, the microcomputer interrupts the output of the drive signal when sensing the reversal of the reluctance motor; the pulse generating part is used for generating pulse according to the drive signal output by the microcomputer; and the drive part is used for providing a pulse power supply generated correspondingly to the pulse generating part to the reluctance motor.
Description
Technical field
The present invention relates to a kind of motor, the driving control device and the control method of particularly a kind of single-phase switch type magnetic resistance motor (SwitchedRoluctance Motor: be designated hereinafter simply as SRM).
Background technology
In general, that SRM can be divided into is single-phase, two-phase and three equates several, and its structure of single-phase SRM and drive circuit are comparatively simple and can cheaply realize, but also exists because the position of rotor causes starting and can't arbitrarily determine the problem of direction of rotation.
Therefore, though for solving above-mentioned deficiency relevant technology has been carried out multiple research and development, the single-phase SRM drive unit of making according to prior art that adopts this technology as shown in Figure 1, this device comprises: single-phase SRM; Be used to detect the rotating speed of described single-phase SRM and the 1st transducer that rotor-position is used in driven at low speed control; Be used to detect 2nd transducer of high-speed driving control with rotor-position; According to the described the 1st and the output of the 2nd transducer detect current single-phase SRM rotating speed and low speed and high-speed driving control and offer single-phase SRM and the microcomputer of output drive signal with rotor-position and for the driving pulse of the pulse duration that will have corresponding its rotating speed; Produce the pulse generating unit of pulse according to the drive signal of described microcomputer output; The power supply of the pulse that the described pulse generating unit of correspondence is generated offers described single-phase SRM and drives the drive division of described single-phase SRM.
At this moment, single-phase SRM comprises as shown in Figure 2: the stator 11 that magnetic force is provided according to the power supply that is provided; Rely on the rotor 12 of the magnetic force rotational motion of stator generation; For making rotor often stop at same position, promptly stop at the shutdown magnet 13 of the position that can produce driving torque.
Below, will do an explanation with regard to the operation principle of the single-phase SRM drive unit of the prior art of said structure.
At first, in case provide the driving command microcomputer just constantly drive signal to be offered the pulse generating unit from moment of detection rotor according to the output of the 1st transducer.
At this moment, slowly run, when being the rotating speed below the 10000rpm, the driving to forward that is caused by positive torque is very important, as shown in Figure 2, according to for detecting the output of the 1st transducer that position that positive torque takes place really is provided with, and output drive signal.
Then, pulse generating unit will provide the pulse of corresponding described drive signal to drive division.
In addition, drive division provides the power supply of corresponding described pulse and single-phase SRM is rotated to stator.
At this moment; it is again the state of the contingent position of driving torque simultaneously that the rotor of single-phase SRM is in because of shutting down the position that magnet stops at sensor; so under by the inductance effect that stator produced that is connected with power supply, be under the effect of magnetic force, rotate along suitable direction.
Then, microcomputer calculates rotating speed according to the output of described the 1st transducer, if the current state that slowly runs that is in, then whenever in the moment according to the output detection rotor position of the 1st transducer, just to pulse generating unit output drive signal, so that in order to drive single-phase SRM and driving pulse to be provided with suitable revolution.
Then, the pulse that the pulse generating unit produces corresponding micom drives signal offers drive division, and provides power supply corresponding to described pulse to drive division, drives single-phase SRM with corresponding rotating speed.
In addition, different when rotating speed rises when reaching high speed rotating state more than the 10000rpm with low speed, because the rotation of this moment is in smooth and easy state,, provide driving pulse in the position that can not produce reactive torque so rotatory force must be managed maximum.
Therefore, as shown in Figure 2, according to moment moment for the output detection rotor that can detect the 2nd transducer that moment that described rotor arrives described position constantly is provided with, microcomputer is to pulse generating unit output drive signal.
Then, pulse generating unit offers drive division with the pulse of the described drive signal of correspondence.
In addition, drive division provides the power supply of corresponding described pulse that single-phase SRM is rotated.
In addition, under the situation of high speed rotary, microcomputer whenever the drive signal of exporting constantly in the moment that rotor is implemented to detect according to current rotating speed, is controlled the driving of single-phase SRM by the 2nd transducer.
At this moment, whenever the moment by the 2nd sensor rotor constantly, will be by the drive signal of microcomputer output to adjusting so that keep suitable rotating speed by the width of the driving pulse of pulse generating unit output.
In addition, when termination generation drive signal allows rotor rotate by inertia in forward rotation, As time goes on, the rotary speed of rotor just can reduce, if produce drive signal this moment again, might be from backward rotation position input drive signal, rotor can produce backward rotation.
So, the single-phase SRM that utilizes prior art is owing to making rotor form backward rotation from backward rotation position input drive signal, and the electric current that is produced by backward rotation might destroy inner element like this.
Summary of the invention
The present invention implements in order to solve above-mentioned the deficiencies in the prior art point, its purpose be to provide a kind of can either perception and prevent the backward rotation of single-phase SRM, single-phase SRM driving control device and method that the inner member that can prevent from again to cause therefrom damages.
For achieving the above object, single-phase SRM driving control device of the present invention comprises: single-phase SRM, be used to detect the 1st transducer that described single-phase SRM driven at low speed is used with rotor-position, and use the prescribed phases difference with described the 1st transducer to detect 2nd transducer of single-phase SRM high-speed driving with rotor-position, also comprise in addition: the AND gate that logic and operation is used is carried out in the output to described the 1st transducer and the 2nd transducer, output according to described the 1st transducer and the 2nd transducer detects current single-phase SRM rotating speed and low speed and high-speed driving control rotor-position, the output drive signal and for the driving pulse of the pulsation width that will have corresponding its rotating speed offers single-phase SRM according to the output of described AND gate, the microcomputer that when the backward rotation of the single-phase SRM of perception, cuts off drive signal output, pulse generating unit according to the drive signal production burst of exporting from described microcomputer, and the power supply of the pulse that the described pulse generating unit of correspondence is produced offers the drive division of described single-phase SRM.
In addition, for realizing the purpose of invention, single-phase SRM drive controlling method of the present invention comprises: single-phase SRM, be used to detect 1st transducer of described single-phase SRM driven at low speed with the position, be used to detect 2nd transducer of described single-phase SRM high-speed driving with rotor-position, and the microcomputer used of the single-phase SRM of drive controlling, also comprise in addition: begin to drive described single-phase SRM and at beginning driving switch formula magnetic resistance motor, the moment that the output of the 2nd transducer is inputed to microcomputer is judged the step that the forwards/reverse of single-phase SRM is rotated according to the output of described the 1st transducer and the 2nd transducer with operation result; And,, just stop the step of the driving of single-phase SRM if during backward rotation according to described judged result.
Description of drawings
Fig. 1 represents the structure calcspar of the single-phase SRM drive unit of prior art.
The structure chart of SRM in Fig. 2 presentation graphs 1.
Fig. 3 represents the structure calcspar of single-phase SRM driving control device of the present invention.
Fig. 4 represents the flow chart of single-phase SRM drive controlling method of the present invention.
Fig. 5 represents to be intended to illustrate the oscillogram of the single-phase SRM forwards/reverse rotation of the present invention determination methods.
Embodiment
Below, at length introduce the present invention with reference to accompanying drawing.
Fig. 3 represents the calcspar of single-phase SRM driving control device structure of the present invention, and Fig. 4 represents the flow chart of SRM drive controlling method of the present invention, and Fig. 5 is the oscillogram that explanation single-phase SRM forwards/reverse of the present invention is rotated determination methods.
Single-phase SRM driving control device of the present invention, except that microcomputer 400 and AND gate 700, other and prior art have same spline structure, so enclose identical symbol.
Therefore, on structure of the present invention, as shown in Figure 3, it comprises: single-phase SRM 10; The 1st transducer 20; The 2nd transducer 30; Pulse generating unit 50; Drive division 60; Be used for the AND gate 700 that logic and operation is used is implemented in the output of described the 1st transducer 20 and the 2nd transducer 30; Detect current single-phase SRM 10 rotating speeds and low speed and high-speed driving control with rotor 12 positions according to the output of described the 1st transducer 20 and the 2nd transducer 30, and in order to have that driving pulse to pulse duration that should rotating speed offers single-phase SRM 10 and output drive signal and cut off the microcomputer 400 of the antiport of single-phase SRM 10 according to the output of described AND gate 700.
In the present invention,,, only introduce the counter-rotational action of relevant perception here with reference to Fig. 4 so will not elaborate because the basic structure of single-phase SRM 10 is same as the prior art with said structure.
At first, an input promptly drives the instruction of single-phase SRM 10 from the work order of outside with the regulation rotating speed, and microcomputer 400 is exported control signals for the work order that cooperates described outside to pulse generating unit 50 on the basis of this instruction of approval.
In view of the above, pulse generating unit 50 produces the driving pulse of regulation and offers drive division, and thus, drive division 60 supply powers make single-phase SRM 10 work.
So, judge by microcomputer 400 whether single-phase SRM 10 is in (S41) among the driving, if interrupt the output (S42) of the 2nd transducer 30 temporarily, judge whether the output of the AND gate 700 by port 3 inputs is "Yes" (S43) just drive beginning.
In addition, according to described judged result (S43), when through port 3 input "Yes", microcomputer 400 judges that just rotor doing forward rotation (S44) and single-phase SRM 10 is driven normally.
If, according to described judged result (S43), when through port 3 input "No", just microcomputer 400 is judged as " backward rotation " (S45) and make single-phase SRM 10 stop (S46).Like this, just, can prevent to do backward rotation and the consequent oppositely charged destruction that inner member is produced because of single-phase SRM 10.
At this moment, if at length investigate the determination methods that forwards/reverse is rotated, at first by microcomputer 400 according to " port one ", promptly judge it is that " forwards/reverse " rotates constantly in the moment of the output of input the 2nd transducer 30.
That is to say, as shown in Figure 5, during as forward rotation, with compare constantly by the moment of the 2nd transducer 30 perception rotors 12, though by moment of the 1st transducer 20 perception rotors 12 earlier slightly constantly, in suitable judgement zone, the 2nd transducer is a "Yes", the 1st transducer 20 also remains on the "Yes" state, so the input of port 3, i.e. the output of AND gate 700 also is "Yes".
In addition, as shown in Figure 5, when backward rotation, with compare constantly from the moment of the 2nd transducer 30 perception rotors 12, from moment of the 1st transducer 20 perception rotors 12 constantly owing to slightly lag behind, therefore, judge that from this zone the 1st transducer 20 can't perception rotor 12, its output will remain the "No" state, so the input of port 3, i.e. the output of AND gate 700 also will be "No".
In sum, utilize single-phase SRM driving control device of the present invention and method, because single-phase SRM drives the initial stage just can perception and end backward rotation, so the damage that both can prevent inner member is arranged Hinder, can improve again the stability of product and the effect of confidence level.
Claims (3)
1. single-phase switch type magnetic resistance motor driving control device, comprise: single-phase switch type magnetic resistance motor, be used to detect described single-phase switch type magnetic resistance motor driven at low speed with the 1st transducer of rotor-position, be used to detect 2nd transducer of single-phase switch type magnetic resistance motor high-speed driving with rotor-position, wherein there are the phase difference of regulation in the 1st transducer and the 2nd signal of sensor, it is characterized in that, also comprise:
The output of described the 1st transducer and the 2nd transducer is implemented the AND gate of logic and operation;
Output according to described the 1st transducer and the 2nd transducer detects current single-phase switch type magnetic resistance motor rotating speed and low speed and high-speed driving control rotor-position, for the driving pulse of the pulse duration that will have corresponding its rotating speed offers the single-phase switch type magnetic resistance motor output drive signal, and when perceiving single-phase switch type magnetic resistance motor, interrupt the microcomputer of its drive signal output according to the output of described AND gate for reverse rotation;
The drive signal of exporting according to described microcomputer and the pulse generating unit of production burst; And
The power supply of the pulse that the described pulse generating unit of correspondence is produced offers the drive division of described single-phase switch type magnetic resistance motor.
2. single-phase switch type magnetic resistance motor drive controlling method, this control is realized by the single-phase switch type magnetic resistance motor driving control device, wherein this driving control device comprises: single-phase switch type magnetic resistance motor, be used to detect described single-phase switch type magnetic resistance motor driven at low speed with the 1st transducer of rotor-position, be used to detect the microcomputer that described single-phase switch type magnetic resistance motor high-speed driving drives usefulness with the 2nd transducer and the control single-phase switch type magnetic resistance motor of rotor-position, it is characterized in that described method comprises:
Begin to drive described single-phase switch type magnetic resistance motor, at beginning driving switch formula magnetic resistance motor, the moment that the output of the 2nd transducer is inputed to microcomputer judges that with operation result single-phase switch type magnetic resistance motor is the step that forwards/reverse is rotated according to the output of described the 1st transducer and the 2nd transducer; And
According to the result of described judgement, be counter-rotational words, just stop single-phase switch type magnetic resistance motor being implemented the step of driving.
3. single-phase switch type magnetic resistance motor drive controlling method as claimed in claim 2, it is characterized in that, according to the output of described the 1st transducer and the 2nd transducer judge single-phase switch type magnetic resistance motor be step that forwards/reverse is rotated be meant if the described the 1st and the output level of the 2nd transducer identical, just be judged as " forward rotation "; If different, just would be judged as the step of " backward rotation ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011259353A CN1238963C (en) | 2001-07-18 | 2001-07-18 | Drive controller and method for single-phase switch type magnetic resistance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011259353A CN1238963C (en) | 2001-07-18 | 2001-07-18 | Drive controller and method for single-phase switch type magnetic resistance motor |
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| Publication Number | Publication Date |
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| CN1398041A CN1398041A (en) | 2003-02-19 |
| CN1238963C true CN1238963C (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011259353A Expired - Fee Related CN1238963C (en) | 2001-07-18 | 2001-07-18 | Drive controller and method for single-phase switch type magnetic resistance motor |
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| CN111146998B (en) * | 2019-03-10 | 2021-06-22 | 湖南贝加尔动力科技有限公司 | Single-phase alternating current powered switched reluctance motor control system |
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Granted publication date: 20060125 Termination date: 20130718 |