CN2842872Y - DC motor with control circuit - Google Patents
DC motor with control circuit Download PDFInfo
- Publication number
- CN2842872Y CN2842872Y CN 200520035783 CN200520035783U CN2842872Y CN 2842872 Y CN2842872 Y CN 2842872Y CN 200520035783 CN200520035783 CN 200520035783 CN 200520035783 U CN200520035783 U CN 200520035783U CN 2842872 Y CN2842872 Y CN 2842872Y
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- switching tube
- motor
- control
- bridge drive
- current
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Abstract
The utility model discloses a DC motor with a control circuit, which comprises a motor and two half-bridge drive circuits, wherein each half-bridge drive circuit comprises two switch tubes which are connected with a first conduction end of current in series and are complementary and conducted, wherein second conduction end of current of the two switch tubes are respectively connected with a power supply and the ground; control ends can evenly respond PWM control signals; serially connected center points of the two switch tubes are coupled to a feeding terminal of the motor, and the two half-bridge drive circuits can be respectively coupled to two feeding terminals of the motor. The utility model has a reversible operation function; the braking function is good; operation of the motor can be smooth; control precision can be increased, and mechanical overshooting can be reduced. The utility model can satisfy requirements of an AMT system and can conduct precise control to the mechanism.
Description
[technical field]
The utility model relates to a kind of direct current machine, relates in particular to the direct current machine that can accurately control of a kind of AMT of being applied to (electric control mechanical type automatic speed variator).
[background technology]
Electrical control automatic manual transmission (AMT) clutch is the depth of coming solenoidoperated cluthes with the rotation of direct current machine, because whole have only several millimeters from, the stroke that closes, and whole stroke in mechanism be subjected to fluctuation very big, the height of control precision can directly have influence on the comfortableness of driving, and this stroke of AMT requires to finish in hundreds of millisecond, the time grown can occur being short of power, situation such as the friction plate lost of life.In the control system of traditional electrical control automatic manual transmission (AMT), though also can make the reversible rotation of motor, but can not control the rotation of motor accurately, promptly can not realize accurate braking.Traditional direct current machine as realizing the rotation of motor M from D to the F direction, adds as high level to INA as shown in Figure 1, PWMB is added pwm pulse, INB, PWMA are changed to low level, Q1 conducting so simultaneously, Q2, Q3 end, and Q4 is conducting when the high level of PWM, ends during low level.So motor M begins to rotate under the control of PWM, electric current is from VCC → Q1 → D → F → Q4 → GND, like this, in this process, the motor two ends can produce an inverse electromotive force, direction is that D is negative, F just, reverse potential is high more, and rotating speed of motor is also high more, rotation speed n=K * E/ φ.Follow according to principle analysis among the figure, motor can only could be worked in the high level period of PWM, is because the excision of power supply does not have electric current to flow through in the motor between low period, so motor is not worked, this the fluctuation of motor speed just occurred, if Q2 can conducting between low period, braking function will occur, so we utilize reverse potential to produce braking between low period at imagination, in the process of The whole control, motor can be more smooth-going like this, just control easily.But this circuit obviously is difficult to accomplish this point, if because like this, just require the mutual conducting of INA and PWMA, in one-period, have a Dead Time like this, promptly mutual conduction period for some time up and down Guan Shi all lead to, be equivalent to supply voltage through to ground at this moment, very big electric current can appear, this is unallowed, can damage metal-oxide-semiconductor.In order to improve, existing circuit between the source electrode of metal-oxide-semiconductor and drain electrode and a diode produce braking, but because the conducting internal resistance height of diode has been difficult to good braking effect.And the braking effect of difference can embody a lot of problems on AMT, as the clutch overshoot.
So will finish from, closing operation in the so short time, require dynamic property and comfortableness simultaneously, can't realize with traditional control method.For example in the process of moving, when needing gear shift, stop when requiring clutch to certain 1 X, stop car in this point and have good comfortableness, with traditional motor control method, after to the motor outage, the result is because the fluctuation of motor in the control procedure, tend to preshoot one segment distance, the overshoot of a little all can allow the passenger or toward backlash, the life-span of the economy of car, dynamic property, clutch-plate etc. all can be affected forward on clutch.Circuit shown in Figure 1 in addition is also very poor aspect circuit protection; have not a particle of defencive function; during as current overload; the very fast damage of MOT pipe meeting; this is unallowed in the exigent system of AMT security performance; such as when opening the throttle owing to what reason causes electric current excessive, when having damaged metal-oxide-semiconductor, that consequence is unimaginable.
[summary of the invention]
Main purpose of the present utility model is exactly to provide a kind of direct current machine with control circuit in order to solve problems of the prior art, can reversible operation, and can accurately brake.
Of the present utility model time a purpose just provides a kind of direct current machine with control circuit, and circuit is had overcurrent protection.
For achieving the above object, a kind of direct current machine that the utility model proposes with control circuit, comprise motor, also comprise two half-bridge drive circuits, described first half-bridge drive circuit comprises the first current lead-through end first, second switching tube series connection, complementary conducting, the second current lead-through end of first, second switching tube connects power supply and ground respectively, first, second control end of switching tube all responds first pwm control signal, and the series connection mid point of first, second switching tube is coupled to first current feed terminal of motor; Described second half-bridge drive circuit comprises the 3rd, the 4th switching tube of the complementary conducting of first current lead-through end series connection, three, the second current lead-through end of the 4th switching tube connects power supply and ground respectively, three, the 4th control end of switching tube all responds second pwm control signal, and the series connection mid point of the 3rd, the 4th switching tube is coupled to second current feed terminal of motor.
Preferably, described the first, the 3rd switching tube is the P channel MOS tube, and described the second, the 4th switching tube is the N-channel MOS pipe.
Described half-bridge drive circuit is the BTS79760B chip.
The beneficial effects of the utility model are: 1) direct current machine is connected on the mid point at first half-bridge drive circuit and second half-bridge drive circuit, because two half-bridge drive circuits are circuit of P raceway groove and series connection of N-channel MOS pipe and complementary conducting, add suitable PWM ripple by control end, can realize the motor positive and inverse function of motion at half-bridge.Metal-oxide-semiconductor takes turns conducting and constitutes drive circuit during forward or reverse, constitutes full bridge driving circuit during whole rotating.This circuit also has braking function simultaneously.Because direct current machine is inductive load, produce self induction electromotive force at the motor two ends, between high period, utilize reverse potential to produce braking, thereby discharged inverse electromotive force, like this whole PWM in the cycle motor rotation smooth-going.Improve control precision, reduced mechanical overshoot.2) utilize the BTS79760B chip that includes half-bridge drive circuit and current foldback circuit to make half-bridge drive circuit, make this motor also have circuit protection function.Be electric current during, produce a suppressor pulse in the chip automatically, force current electric current toward decline greater than certain value.So adopt this circuit can satisfy the accurate control requirement to mechanism of AMT system requirements.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the DC motor control circuit figure of prior art;
Fig. 2 is the DC motor control circuit figure of a kind of embodiment of the present utility model;
Fig. 3 is the DC motor control circuit figure of another kind of embodiment of the present utility model.
[embodiment]
Specific embodiment one, as shown in Figure 2, direct current machine is connected between first half-bridge drive circuit and second half-bridge drive circuit, first half-bridge drive circuit comprises a MOS switching tube Q1 and the 2nd MOS switching tube Q2, the one MOS switching tube Q1 is the P channel MOS tube, the 2nd MOS switching tube Q2 is the N-channel MOS pipe, promptly drain the first current lead-through utmost point with the 2nd MOS switching tube Q2 of the first current lead-through utmost point of the one MOS switching tube Q1 promptly drains and is in series, its series connection mid point links to each other with the first current feed terminal FEN of motor, the second current lead-through utmost point of the one MOS switching tube Q1 is that source electrode connects DC power supply, the second current lead-through utmost point of the 2nd MOS switching tube Q2 is a source ground, the control utmost point of the one MOS switching tube Q1 and the 2nd MOS switching tube Q2 is that grid all links to each other with the input terminal PWM1-0 of a PWM (pulse-width signal) ripple, and a MOS switching tube Q1 and the 2nd MOS switching tube Q2 response PWM ripple PWM1-0 takes turns conducting.Second half-bridge drive circuit comprises the 3rd MOS switching tube Q3 and the 4th MOS switching tube Q4, the 3rd MOS switching tube Q3 is the P channel MOS tube, the 4th MOS switching tube Q4 is the N-channel MOS pipe, promptly drain the first current lead-through utmost point with the 4th MOS switching tube Q4 of the first current lead-through utmost point of the 3rd MOS switching tube Q3 promptly drains and is in series, its series connection mid point links to each other with the second current feed terminal HE of motor, the second current lead-through utmost point of the 3rd MOS switching tube Q3 is that source electrode connects DC power supply, the second current lead-through utmost point of the 4th MOS switching tube Q4 is a source ground, the control utmost point of the 3rd MOS switching tube Q3 and the 4th MOS switching tube Q4 is that grid all links to each other with the input terminal PWM1-1 of the 2nd PWM ripple, and the 3rd MOS switching tube Q3 and the 4th MOS switching tube Q4 response PWM ripple PWM1-1 takes turns conducting.
The following describes the control principle of the rotating and the braking of this circuit.
Just changeing principle: PWM1-1 end and be fixing high level, the PWM1-0 end is a pwm pulse of controlling usefulness.Because the PWM1-1 end is a high level, the 4th MOS switching tube Q4 conducting this moment, the 3rd MOS switching tube Q3 ends; The PWM1-0 end is added to be pwm pulse, and the one MOS switching tube Q1 conducting, the 2nd MOS switching tube Q2 end between the PWM low period, between high period, and the 2nd MOS switching tube Q2 conducting, a MOS switching tube Q1 ends.This moment, motor just changeed, and the sense of current is by power supply 12V → Q1 → motor → Q4 → power supply ground.Because direct current machine is an inductive load, produce a reverse self induction electromotive force E this moment at the motor two ends, the direction of electromotive force is that HE holds to anodal, the FEN end is negative pole.E=K φ n, wherein K is the electromotive force constant, φ magnetic flux, n are rotating speeds.
Braking principle: between the high period of PWM, the one MOS switching tube Q1 ends, the 2nd MOS switching tube Q2 conducting, because the 4th MOS switching tube Q4 also is in conducting state under the control of PWM1-1 end high level, so this time, the reverse self-induced e.m.f at motor two ends discharged by the 2nd MOS switching tube Q2 and the 4th MOS switching tube Q4, discharge institute work is rotated further motor, and the sense of current of discharge loop is HE → Q4 → Q2 → FEN.So just can utilize reverse self-induced e.m.f to produce braking function, motor is rotated further, and motor just rotates steadily, has reduced mechanical overshoot, improves control precision.
Inversion principle: motor when control counter-rotating, be fixing high level at the PWM1-0 end, the PWM1-1 end is a pwm pulse of controlling usefulness, control procedure and just to change be opposite.So present embodiment is the reversible electric machine accuracy-control system that can realize braking function.
Two MOS switching tubes that include series connection and complementary conducting in the BTS7960B chip of specific embodiment two, the employing new technique production of Infineon company, so directly adopt this chip as half-bridge drive circuit, being about to motor directly is connected between 4,8 pin of two BTS7960B chips, as shown in Figure 3,7 pin of chip connect DC power supply, 1 pin ground connection, 2 pin connect the PWM ripple.Owing to include the overcurrent protection electric current in the BTS7960B chip, when electric current surpasses a certain set point, produce a suppressor pulse in the chip automatically; force current electric current toward descending; thereby prevent that electric current is excessive to damage metal-oxide-semiconductor in the circuit, the while can prevent that circuit is overheated, guarantees the stability of circuit.
This chip for driving is integrated in discrete circuit among the monolithic IC, and the peripheral components cost is reduced, and reliability improves.Two inputs of this circuit and TTL/CMOS level compatibility have good anti-interference.And has an effect of overtemperature protection.Direct current machine of adjunction can directly drive the rotating campaign of direct current machine between two outputs.
According to above-mentioned control principle, the one MOS switching tube Q1, the 4th MOS switching tube Q4 are designed to the P channel MOS tube, the 2nd MOS switching tube Q2, the 3rd MOS switching tube Q3 are the N-channel MOS pipe, be fixing low level at PWM1-1 end, the PWM1-0 end is the pwm pulse of control usefulness, realizes the just commentaries on classics and the braking of direct current machine.Be fixing high level at PWM1-0 end, the PWM1-1 end is the pwm pulse of control usefulness, the counter-rotating and the braking of realization direct current machine.In like manner, the one MOS switching tube Q1, the 4th MOS switching tube Q4 are designed to the N-channel MOS pipe, and the 2nd MOS switching tube Q2, the 3rd MOS switching tube Q3 are the P channel MOS tube, are fixing high level at PWM1-1 end, the PWM1-0 end is the pwm pulse of control usefulness, realizes the just commentaries on classics and the braking of direct current machine.Be fixing low level at PWM1-0 end, the PWM1-1 end is the pwm pulse of control usefulness, the counter-rotating and the braking of realization direct current machine.
Above-mentioned switching tube can also be realized by triode.
In sum, the utility model implementation is simple and convenient, has the rotating function of motion, system Moving function is good, can make motor rotation smooth-going, has improved control accuracy, has reduced mechanical overshoot, Satisfy the accurate control to mechanism of AMT system requirements. In addition circuit had defencive function.
Claims (3)
1. direct current machine with control circuit, comprise motor, it is characterized in that: also comprise two half-bridge drive circuits, described first half-bridge drive circuit comprises the first current lead-through end first, second switching tube series connection, complementary conducting, the second current lead-through end of first, second switching tube connects power supply and ground respectively, first, second control end of switching tube all responds first pwm control signal, and the series connection mid point of first, second switching tube is coupled to first current feed terminal of motor; Described second half-bridge drive circuit comprises the 3rd, the 4th switching tube of the complementary conducting of first current lead-through end series connection, three, the second current lead-through end of the 4th switching tube connects power supply and ground respectively, three, the 4th control end of switching tube all responds second pwm control signal, and the series connection mid point of the 3rd, the 4th switching tube is coupled to second current feed terminal of motor.
2. the direct current machine of band control circuit as claimed in claim 1 is characterized in that: described the first, the 3rd switching tube is the P channel MOS tube, and described the second, the 4th switching tube is the N-channel MOS pipe.
3. the direct current machine of band control circuit as claimed in claim 2 is characterized in that: described half-bridge drive circuit is the BTS79760B chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035783 CN2842872Y (en) | 2005-10-13 | 2005-10-13 | DC motor with control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520035783 CN2842872Y (en) | 2005-10-13 | 2005-10-13 | DC motor with control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2842872Y true CN2842872Y (en) | 2006-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520035783 Expired - Lifetime CN2842872Y (en) | 2005-10-13 | 2005-10-13 | DC motor with control circuit |
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| Country | Link |
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| CN (1) | CN2842872Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976993A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Motor positive/negative rotation circuit for eco-house |
| CN102126495A (en) * | 2010-01-19 | 2011-07-20 | 同济大学 | Electric automation transmission execution mechanism control circuit |
| CN101587336B (en) * | 2009-06-18 | 2011-12-14 | 上海华铭智能终端设备股份有限公司 | Door controller |
| CN101499752B (en) * | 2008-01-28 | 2012-06-13 | 上海西门子医疗器械有限公司 | Interlock circuit |
| CN103334670A (en) * | 2013-06-19 | 2013-10-02 | 宁波恒特汽车零部件有限公司 | Anti-pinch control circuit of automotive window direct current motor |
| CN103334669A (en) * | 2013-06-19 | 2013-10-02 | 宁波普林斯电机有限公司 | Control circuit of automotive window direct current motor |
| CN103354438A (en) * | 2013-06-19 | 2013-10-16 | 宁波普林斯电机有限公司 | Vehicle-window direct-current motor positive inversion control circuit |
| CN104052337A (en) * | 2013-03-15 | 2014-09-17 | 深圳市海洋王照明工程有限公司 | Motor driving circuit |
| CN105581908A (en) * | 2016-01-29 | 2016-05-18 | 上海泰医格制药设备有限公司 | Device and method for controlling electric squeezing device of traditional Chinese medicine decoction equipment |
| CN108847797A (en) * | 2018-08-06 | 2018-11-20 | 沃尔特电子（苏州）有限公司 | A kind of H bridge driving method of direct current generator |
| CN109602551A (en) * | 2018-11-21 | 2019-04-12 | 韩雪 | The self-actuating brake circuit and control method of brush motor electric wheel-chair vehicle |
| CN110112966A (en) * | 2018-01-29 | 2019-08-09 | 郑州宇通客车股份有限公司 | A kind of DC motor positive and negative rotation and speed-regulating control circuit and a kind of direct current motor system |
| CN112105110A (en) * | 2020-09-12 | 2020-12-18 | 深圳市维盛泰光电有限公司 | Multipurpose two-wire drive circuit |
-
2005
- 2005-10-13 CN CN 200520035783 patent/CN2842872Y/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499752B (en) * | 2008-01-28 | 2012-06-13 | 上海西门子医疗器械有限公司 | Interlock circuit |
| CN101587336B (en) * | 2009-06-18 | 2011-12-14 | 上海华铭智能终端设备股份有限公司 | Door controller |
| CN102126495A (en) * | 2010-01-19 | 2011-07-20 | 同济大学 | Electric automation transmission execution mechanism control circuit |
| CN101976993A (en) * | 2010-11-11 | 2011-02-16 | 苏州合欣美电子科技有限公司 | Motor positive/negative rotation circuit for eco-house |
| CN104052337A (en) * | 2013-03-15 | 2014-09-17 | 深圳市海洋王照明工程有限公司 | Motor driving circuit |
| CN104052337B (en) * | 2013-03-15 | 2017-02-08 | 深圳市海洋王照明工程有限公司 | Motor driving circuit |
| CN103334669B (en) * | 2013-06-19 | 2016-02-10 | 宁波普林斯电机有限公司 | Control circuit of automotive window direct current motor |
| CN103354438A (en) * | 2013-06-19 | 2013-10-16 | 宁波普林斯电机有限公司 | Vehicle-window direct-current motor positive inversion control circuit |
| CN103334669A (en) * | 2013-06-19 | 2013-10-02 | 宁波普林斯电机有限公司 | Control circuit of automotive window direct current motor |
| CN103354438B (en) * | 2013-06-19 | 2016-06-29 | 宁波普林斯电机有限公司 | Vehicle-window direct-current motor positive inversion control circuit |
| CN103334670A (en) * | 2013-06-19 | 2013-10-02 | 宁波恒特汽车零部件有限公司 | Anti-pinch control circuit of automotive window direct current motor |
| CN105581908A (en) * | 2016-01-29 | 2016-05-18 | 上海泰医格制药设备有限公司 | Device and method for controlling electric squeezing device of traditional Chinese medicine decoction equipment |
| CN110112966A (en) * | 2018-01-29 | 2019-08-09 | 郑州宇通客车股份有限公司 | A kind of DC motor positive and negative rotation and speed-regulating control circuit and a kind of direct current motor system |
| CN108847797A (en) * | 2018-08-06 | 2018-11-20 | 沃尔特电子（苏州）有限公司 | A kind of H bridge driving method of direct current generator |
| CN108847797B (en) * | 2018-08-06 | 2020-05-22 | 沃尔特电子（苏州）有限公司 | H-bridge driving method of direct current motor |
| CN109602551A (en) * | 2018-11-21 | 2019-04-12 | 韩雪 | The self-actuating brake circuit and control method of brush motor electric wheel-chair vehicle |
| CN112105110A (en) * | 2020-09-12 | 2020-12-18 | 深圳市维盛泰光电有限公司 | Multipurpose two-wire drive circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061129 |
|
| EXPY | Termination of patent right or utility model |