CN201601645U - Control driving circuit of stepping motor - Google Patents
Control driving circuit of stepping motor Download PDFInfo
- Publication number
- CN201601645U CN201601645U CN2009202459806U CN200920245980U CN201601645U CN 201601645 U CN201601645 U CN 201601645U CN 2009202459806 U CN2009202459806 U CN 2009202459806U CN 200920245980 U CN200920245980 U CN 200920245980U CN 201601645 U CN201601645 U CN 201601645U
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Abstract
The utility model relates to a control driving circuit of a stepping motor, which comprises an isolating circuit (2), a low-voltage control circuit (4), a high-voltage control circuit (3), a differentiating circuit (5), a high-voltage driving circuit (6) and a low-voltage driving and locking circuit (7). The control driving circuit solves the technical problem of high power consumption of the present stepping motor, and has the following advantages: the requirement for controller software is low, the power consumption is low, the driving moment is large, and the balance of the moment can be maintained; the requirement for heat radiation of a power supply and the driving circuit is low, and the reliability is high.
Description
Technical field
The utility model relates to a kind of step motor controlled driving circuit.
Background technology
The step motor drive control method that extensively adopts exists output torque big now, but the high shortcoming of power consumption; The driveability height of the drive controlling method that also has, but circuit and Control Software complexity cause global reliability to reduce; For satisfying reliability and big output torque, the requirement of low-power consumption simultaneously, need a kind of step motor drive control circuit of development.The no self-locking moment of reaction stepping motor self so all need apply certain electric current at the winding two ends in rotation process and static process, is kept certain moment.Especially in the static process, winding current all is converted into heat and distributes, and the heat radiation of power supply and drive circuit is had higher requirement.If stepping motor adopts powered battery, consumed energy not only when then stepping motor is static also influences the heat radiation and the useful life of system.
The utility model content
The utility model purpose provides a kind of step motor controlled driving circuit, and it has solved the high technical problem of existing stepping motor power consumption,
Technical solution of the present utility model:
A kind of step motor controlled driving circuit, its special character is:
It comprises buffer circuit 2, low-voltage control circuit 4, high-voltage control circuit 3, differential circuit 5, high-voltage driving circuit 6, low-voltage driving and locking circuit 7;
Described buffer circuit 2 comprises photoelectrical coupler D2; The high termination signal power source of the input signal of described photoelectrical coupler D2 VCC, its input signal hangs down the termination control wave, and it exports high termination low-voltage control circuit 4, the low termination high-voltage control circuit 3 of its output;
Described low-voltage control circuit 4 comprises the 3rd triode V4; The base stage of described the 3rd triode V4 connects that the output of photoelectrical coupler D2 is high-end, and its emitter meets high voltage source VH, and its collector electrode connects the input of low-voltage driving and lock-in circuit;
Described high-voltage control circuit 3 comprises the first triode V5, the second triode V6; The base stage of the described first triode V5 connects the output low side of photoelectrical coupler D2, and its collector electrode meets high voltage source VH, and its emitter connects driving power ground; The base stage of the described second triode V6 connects the collector electrode of the first triode V5, and its collector electrode meets high voltage source VH, and its emitter connects driving power ground;
Described differential circuit 5 comprises differential capacitance C3*, charging resistor R10, the first diode V7; The collector electrode of a termination second triode V6 of described differential capacitance C3*, the anode of its another termination first diode V7, the negative terminal of the described first diode V7 connects the input of high-voltage driving circuit 6; The anode of a termination first diode V7 of described charging resistor R10, its another termination driving power ground;
Described high-voltage driving circuit 6 comprises the 4th triode V8, PMOS pipe V1 and moment build-out resistor R1; The base stage of described the 4th triode V8 connects the negative terminal of first diode, and its collector electrode connects the grid of PMOS pipe V1, and its emitter connects driving power ground; The source electrode of described PMOS pipe V1 meets high voltage source VH, and its drain electrode connects low-voltage driving and locking circuit by moment build-out resistor R1;
Described low-voltage driving and lock-in circuit 7 comprise driving triode V2, Schottky diode V3; The base stage of described driving triode V2 connects the collector electrode of the 3rd triode V4, and its collector electrode connects the drain electrode that PMOS manages V1 by moment build-out resistor R1, and its emitter connects the stepping motor winding L; The positive termination low-tension supply VL of described Schottky diode V3, its negative terminal connect the collector electrode that drives triode V2.
Above-mentioned control Driver Circuit comprises plastic filter circuit 1, described plastic filter circuit 1 comprises schmidt trigger inverter D1 and port protection resistance R 2, the input termination control wave of described schmidt trigger inverter D1, the input signal low side of its output termination photoelectrical coupler D2; The input of one termination schmidt trigger inverter D1 of described port protection resistance R 2, its other end ground connection.
Above-mentioned control Driver Circuit comprises the protective circuit in parallel with the stepping motor winding L 8; Described protective circuit 8 comprises the second diode V9 and quickens to discharge resistance R
L
Above-mentioned the 3rd triode V4 is the PNP pipe; Described driving triode is a Darlington transistor.
The beneficial effect that the utility model had:
1, the pulse control circuit of the utility model circuit and controller is combined into complete step motor control system, requires low to controller software.
2, adopt during motor rotation high pressure to realize big output torque requirement, adopt low pressure during static locking, realize the big moment locking of low-power consumption, differential circuit has been realized the seamless switching that drives high voltage and drive low-voltage, and driving moment is big, can keep equalising torque; Heat radiation to power supply and drive circuit requires to reduce.
3, reliability height is applicable to the reaction stepping motor automatic control system high to reliability requirement.
4, the utility model also is applicable to the drive controlling that locking torque is had the composite stepper motor of bigger requirement.
Description of drawings
Fig. 1 is the theory diagram figure of the utility model overspeed protection circuit;
Fig. 2 is the circuit diagram of the utility model overspeed protection circuit;
Fig. 3 is the corresponding relation figure of the utility model control signal, low-voltage control circuit output signal, differential circuit output signal and motor windings voltage.
Embodiment
The utility model step motor controlled driving circuit comprises plastic filter circuit 1, buffer circuit 2, low-voltage control circuit 4, high-voltage control circuit 3, differential circuit 5, high-voltage driving circuit 6, low-voltage driving and locking circuit 7, protective circuit 8; Plastic filter circuit 1 comprises schmidt trigger inverter D1 and port protection resistance R 2, the input termination control wave of schmidt trigger inverter D1, the input signal low side of its output termination photoelectrical coupler D2; The input of one termination schmidt trigger inverter D1 of port protection resistance R 2, its other end ground connection; Buffer circuit 2 comprises photoelectrical coupler D2; The high termination signal power source of the input signal of photoelectrical coupler D2 VCC; Low-voltage control circuit 4 comprises the 3rd triode V4; It is high-end that the base stage of the 3rd triode V4 connects the output of photoelectrical coupler D2, and its emitter meets high voltage source VH; The 3rd triode V4 specifically can select the PNP pipe; High-voltage control circuit 3 comprises the first triode V5, the second triode V6; The base stage of the first triode V5 connects the output low side of photoelectrical coupler D2, and its collector electrode meets high voltage source VH, and its emitter connects driving power ground; The base stage of the second triode V6 connects the collector electrode of the first triode V5, and its collector electrode meets high voltage source VH, and its emitter connects driving power ground; Differential circuit 5 comprises differential capacitance C3*, charging resistor R10, the first diode V7; The collector electrode of a termination second triode V6 of differential capacitance C3*, the anode of its another termination first diode V7, the anode of a termination first diode V7 of charging resistor R10, its another termination driving power ground; High-voltage driving circuit 6 comprises the 4th triode V8, PMOS pipe V1 and moment build-out resistor R1; The base stage of the 4th triode V8 connects the negative terminal of the first diode V7, and its collector electrode connects the grid of PMOS pipe V1, and its emitter connects driving power ground; The source electrode of PMOS pipe V1 meets high voltage source VH; Low-voltage driving and lock-in circuit 7 comprise driving triode V2, Schottky diode V3; The base stage that drives triode V2 connects the collector electrode of the 3rd triode V4, and its collector electrode connects the drain electrode that PMOS manages V1 by moment build-out resistor R1, and its emitter connects the stepping motor winding L; The positive termination low-tension supply VL of Schottky diode V3, its negative terminal connect the collector electrode that drives triode V2; Drive triode V2 and also can select Darlington transistor; Protective circuit 8 is in parallel with the stepping motor winding L, comprises the second diode V9 and quickens to discharge resistance R
L
The utility model operation principle: the pulse control signal that pulse control circuit produces produces two path control signal simultaneously through the buffer circuit conversion, and wherein low-voltage control signal and control wave are synchronous, the work of control step motor windings; The work of high voltage control signal control differential circuit, differential circuit is used to produce accurate commutator pulse, its output signal and control impuls synchronously but pulse duration is different, this high voltage control signal is controlled the break-make of the P channel MOS tube of high-voltage driving circuit.When pulse control signal was effective, the high voltage control signal and the low-voltage control signal of isolating output were all effective, this moment the motor windings high-pressure work, current of electric moment sets up, and guarantees that the motor output torque is big; When the motor windings electric current reaches requiring of setting, differential control circuit output signal is put low, and high-voltage driving circuit ends, and low-voltage driving and lock-in circuit are connected to motor windings work automatically simultaneously, keep the motor windings electric current, this moment, the power consumption of circuit only was the power consumption that drives triode V2.When adjusting differential circuit parameter or stepping motor operating frequency and make the input signal pulse duration discharge and recharge the time less than differential circuit, differential circuit is inoperative in motor operation course, and motor is the high-pressure service state of a control, as the d among Fig. 3, e, f waveform; When motor is in the static locking state, automatically switch to the low-voltage locking state, be low power consumpting state.
According to the requirement of motor output torque, can adjust the differential circuit parameter, to change motor-driven high-low pressure driving condition, when the stepping motor operating frequency higher, make the control impuls pulsewidth less than differential circuit during the control time, differential circuit makes low-voltage driving inoperative in motor operation course; When motor shut down, differential circuit control motor was the low power consumpting state of low pressure locking.When the differential circuit control time is lower than the motor control signal pulsewidth, motor windings work moment is a high drive, guarantee to reach very soon the required drive current of output torque, when electric current reaches the moment requirement, driving voltage is converted to low-voltage driving, keep drive current and reach the moment requirement, as a, b waveform among Fig. 3.
The utility model course of work:
The motor rotation control signal is a pulse signal, and high level is effective, and signal frequency is determined according to the motor rotation rate requirement.
Control signal becomes low level behind the schmidt trigger inverter, the schmidt trigger inverter carries out shaping filter to signal simultaneously, optocoupler output conducting this moment, then the 3rd triode V4 conducting, be that low-voltage control signal is high (effective status), controlling and driving triode V2 conducting; The conducting of optocoupler makes the first triode V5 conducting simultaneously, the current collection of the first triode V5 is electronegative potential very, the second triode V6 is ended, capacitor C 3* in the differential circuit begins charging, the differential control signal is a high level, differential control signal (effective status) is behind the first diode V7, export the 4th triode V8 to, during the 4th triode V8 conducting, high-voltage control circuit work, PMOS pipe V1 conducting, this moment, high pressure, low-voltage control signal were all effective, Schottky diode V3 ends low pressure, and motor windings L leads to high voltage.Conducting along with optocoupler D2, the differential circuit output signal reduces gradually, when being lower than the conducting voltage of the first diode V7, the differential control signal is an electronegative potential, and the 4th triode V8 ends, PMOS pipe V1 ends, high-voltage control circuit is not worked, and low pressure is connected to motor windings L by Schottky diode V3, keeps the motor windings electric current, this moment, circuit power consumption only was the power consumption of Schottky diode V3, the 3rd triode V4, and Schottky diode V3 oneself power consumption is very low.
When control signal (L) is low level, become high level behind the schmidt trigger inverter, this moment, the optocoupler output ended, the 3rd triode V4, first all not conducting conductings of triode V5, differential circuit capacitor C 3* discharge drives all not conductings of triode V2, PMOS pipe V1, the motor windings no power.
According to motor-driven cylinder electric current, can select PMOS pipe V1, drive triode V2, drive current is provided with between 0.5～10A.When drive current requires greatly, drive triode V2 and should select Darlington transistor, and guarantee that it is operated in the saturation conduction state.
Claims (4)
1. step motor controlled driving circuit is characterized in that:
It comprises buffer circuit (2), low-voltage control circuit (4), high-voltage control circuit (3), differential circuit (5), high-voltage driving circuit (6), low-voltage driving and locking circuit (7);
Described buffer circuit (2) comprises photoelectrical coupler (D2); The high termination signal power source of the input signal of described photoelectrical coupler (D2) (VCC), its input signal hangs down the termination control wave, and it exports high termination low-voltage control circuit (4), the low termination high-voltage control circuit (3) of its output;
Described low-voltage control circuit (4) comprises the 3rd triode (V4); The base stage of described the 3rd triode (V4) connects that the output of photoelectrical coupler (D2) is high-end, and its emitter connects high voltage source (VH), and its collector electrode connects the input of low-voltage driving and lock-in circuit;
Described high-voltage control circuit (3) comprises first triode (V5), second triode (V6); The base stage of described first triode (V5) connects the output low side of photoelectrical coupler (D2), and its collector electrode connects high voltage source (VH), and its emitter connects driving power ground; The base stage of described second triode (V6) connects the collector electrode of first triode (V5), and its collector electrode connects high voltage source (VH), and its emitter connects driving power ground;
Described differential circuit (5) comprises differential capacitance (C3*), charging resistor (R10), first diode (V7); The collector electrode of one termination, second triode (V6) of described differential capacitance (C3*), the anode of its another termination first diode (V7), the negative terminal of described first diode (V7) connects the input of high-voltage driving circuit (6); The anode of one termination, first diode (V7) of described charging resistor (R10), its another termination driving power ground;
Described high-voltage driving circuit (6) comprises that the 4th triode (V8), PMOS manage (V1) and moment build-out resistor (R1); The base stage of described the 4th triode (V8) connects the negative terminal of first diode, and its collector electrode connects the grid of PMOS pipe (V1), and its emitter connects driving power ground; The source electrode of described PMOS pipe (V1) connects high voltage source (VH), and its drain electrode connects low-voltage driving and locking circuit by moment build-out resistor (R1);
Described low-voltage driving and lock-in circuit (7) comprise driving triode (V2), Schottky diode (V3); The base stage of described driving triode (V2) connects the collector electrode of the 3rd triode (V4), and its collector electrode connects the drain electrode that PMOS manages (V1) by moment build-out resistor (R) 1, and its emitter connects stepping motor winding (L); The positive termination low-tension supply (VL) of described Schottky diode (V3), its negative terminal connect the collector electrode that drives triode (V2).
2. step motor controlled driving circuit according to claim 1, it is characterized in that: described control Driver Circuit comprises plastic filter circuit (1), described plastic filter circuit (1) comprises schmidt trigger inverter (D1) and port protection resistance (R2), the input termination control wave of described schmidt trigger inverter (D1), the input signal low side of its output termination photoelectrical coupler (D2); The input of one termination schmidt trigger inverter (D1) of described port protection resistance (R2), its other end ground connection.
3. step motor controlled driving circuit according to claim 1 and 2 is characterized in that: described control Driver Circuit comprises the protective circuit (8) in parallel with stepping motor winding (L); Described protective circuit (8) comprises second diode (V9) and quickens to discharge resistance (R
L).
4. step motor controlled driving circuit according to claim 3 is characterized in that: described the 3rd triode (V4) is the PNP pipe; Described driving triode is a Darlington transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459806U CN201601645U (en) | 2009-12-25 | 2009-12-25 | Control driving circuit of stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459806U CN201601645U (en) | 2009-12-25 | 2009-12-25 | Control driving circuit of stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601645U true CN201601645U (en) | 2010-10-06 |
Family
ID=42812704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202459806U Expired - Lifetime CN201601645U (en) | 2009-12-25 | 2009-12-25 | Control driving circuit of stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201601645U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324833A (en) * | 2011-06-10 | 2012-01-18 | 无锡友达电子有限公司 | Integrated circuit special for electric vehicle driver designed with low-voltage process |
| CN101753085B (en) * | 2009-12-25 | 2012-05-09 | 中国航天科技集团公司第六研究院第十一研究所 | Step motor controlled driving circuit |
| CN103731078A (en) * | 2012-10-11 | 2014-04-16 | 深圳兴奇宏科技有限公司 | Circuit structure capable of promoting heat dissipation capacity of MOS transistor |
| CN107947656A (en) * | 2017-12-29 | 2018-04-20 | 岩金龙 | A kind of stepper motor driving circuit that can carry out high-low pressure free switching |
-
2009
- 2009-12-25 CN CN2009202459806U patent/CN201601645U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753085B (en) * | 2009-12-25 | 2012-05-09 | 中国航天科技集团公司第六研究院第十一研究所 | Step motor controlled driving circuit |
| CN102324833A (en) * | 2011-06-10 | 2012-01-18 | 无锡友达电子有限公司 | Integrated circuit special for electric vehicle driver designed with low-voltage process |
| CN102324833B (en) * | 2011-06-10 | 2014-01-08 | 无锡友达电子有限公司 | Integrated circuit special for electric vehicle driver designed with low-voltage process |
| CN103731078A (en) * | 2012-10-11 | 2014-04-16 | 深圳兴奇宏科技有限公司 | Circuit structure capable of promoting heat dissipation capacity of MOS transistor |
| CN103731078B (en) * | 2012-10-11 | 2016-05-18 | 深圳兴奇宏科技有限公司 | Promote the circuit structure of MOS electric crystal heat-sinking capability |
| CN107947656A (en) * | 2017-12-29 | 2018-04-20 | 岩金龙 | A kind of stepper motor driving circuit that can carry out high-low pressure free switching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101006 Effective date of abandoning: 20091225 |