CN104283470A - Voltage-controlled current source stepping motor driving device - Google Patents
Voltage-controlled current source stepping motor driving device Download PDFInfo
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- CN104283470A CN104283470A CN201410535315.6A CN201410535315A CN104283470A CN 104283470 A CN104283470 A CN 104283470A CN 201410535315 A CN201410535315 A CN 201410535315A CN 104283470 A CN104283470 A CN 104283470A
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Abstract
The invention discloses a voltage-controlled current source stepping motor driving device. The voltage-controlled current source stepping motor driving device comprises an H-bridge control unit for driving a stepping motor. Four power devices of the H-bridge control unit are controlled by a first switching circuit, a second switching circuit, a third switching circuit and a fourth switching circuit respectively to be powered on or powered off. The driving device further comprises a voltage-controlled current source circuit for controlling current of a winding of the stepping motor. The voltage-controlled current source circuit comprises an operational amplifier (N2) and a Darlington transistor (Q9). An H-bridge MOS transistor is driven by the switching circuits, so that the H-bridge control unit is powered on in sequence, and the rotating direction of the stepping motor is controlled. Control voltage can control the current flowing through the winding of the stepping motor through the voltage-controlled current source circuit, so that the purpose of controlling the speed of the stepping motor is achieved; due to the fact that the Darlington transistor works in a linear region, the voltage overshoot phenomenon of the winding of the stepping motor and the H-bridge drive shoot-through phenomenon are restrained, no sequential control over a dead region or a transient over-voltage absorption circuit needs to be added, the structure is simple, and the reliability is high.
Description
Technical field
The present invention relates to motor-drive technique field, specifically a kind of voltage-controlled current source driving device for step-by-step.
Background technology
Known, stepper motor driver is a kind of is the actuator of angular displacement by electroporation, when stepper motor driver receives a pulse signal, it rotates a fixing angle with regard to Driving Stepping Motor by the direction of setting, its rotation runs step by step with fixing angle, pilot angle displacement can be carried out by control impuls number, thus reach the object of accurately location; Speed and the acceleration of electric machine rotation can be controlled simultaneously by control impuls frequency, reach the object of speed governing.It is a kind of common mode that the circuit form of current employing H bridge drives direct current machine, " H bridge control system " (patent No.: ZL200620014994.3) discloses the H bridge control system of a kind of motor speed and rotating, this system adopts MCU to produce pwm signal and controls H-bridge circuit, due to the timing reasons of pwm signal, operationally may there is monolateral straight-through phenomenon in H bridge, also there is overshoot phenomenon in power device, therefore the sequencing control and the transient voltage absorbing circuit that increase dead band is needed, power device is protected, the complexity of circuit certainly will be added, the reliability of influential system.
Summary of the invention
The object of the present invention is to provide a kind of voltage-controlled current source driving device for step-by-step, the simple and reliable property of this driving device structure is high, can avoid the voltage overshoot phenomenon of motor winding and the straight-through phenomenon of H bridge.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of voltage-controlled current source driving device for step-by-step, comprise the H bridge control unit for Driving Stepping Motor, H bridge control unit comprises and is positioned at high-end left upper arm PMOS and right upper arm PMOS, and be positioned at lower-left arm NMOS tube and the bottom right arm NMOS tube of low side, left upper arm PMOS and bottom right arm NMOS tube form the first path, and right upper arm PMOS and lower-left arm NMOS tube form alternate path; Described left upper arm PMOS and the grid of right upper arm PMOS are connected to and control the first identical switching circuit of PMOS break-make, structure and second switch circuit, and lower-left arm NMOS tube and the grid of bottom right arm NMOS tube are connected to and control the 3rd identical switching circuit of NMOS tube break-make, structure and the 4th switching circuit; Described drive unit also comprises the voltage controlled current source circuit for control step machine winding current, voltage controlled current source circuit comprises operational amplifier and Darlington transistor, control voltage is through the input in the same way of resistance R31 input operational amplifier, the reverse input end of operational amplifier connects the emitter of Darlington transistor through resistance R32, the output of operational amplifier connects the base stage of Darlington transistor, the collector electrode of Darlington transistor is connected with the low side of H bridge control unit, and the emitter of Darlington transistor is by resistance R34 ground connection.
Further, described first switching circuit comprises resistance R9, triode Q5, resistance R19 and resistance R11, the input signal of one end receive logic control voltage of resistance R9, the base stage of other end connecting triode Q5, the grounded emitter of triode Q5, connect the grid of left upper arm PMOS after the collector series resistance R19 of triode Q5, the grid of left upper arm PMOS also connects power Vcc by resistance R11.
Further, described 3rd switching circuit comprises resistance R10, triode Q7, resistance R23, resistance R12, resistance R27 and diode D1, the input signal of one end receive logic control voltage of resistance R10, the base stage of other end connecting triode Q7, the grounded emitter of triode Q7, one end of the collector electrode contact resistance R23 of triode Q7, the other end contact resistance R12 and resistance R27 respectively of resistance R23, the other end of resistance R12 connects the grid of lower-left arm NMOS tube and the anode of voltage stabilizing didoe D1 respectively, the other end of resistance R27 connects power Vcc, the negative electrode of voltage stabilizing didoe D1 connects the collector electrode of Darlington transistor.
Further, described operational amplifier adopts OP77.
The invention has the beneficial effects as follows, driven the metal-oxide-semiconductor of H bridge by switching circuit, make H bridge control unit make the conducting according to the order of sequence of the first path and alternate path as required, realize the control of the rotation direction to stepping motor; By voltage-controlled current source circuit realiration control voltage to the control flowing through stepping motor winding current, thus reach the object of control step motor speed, Darlington transistor is operated in linear zone, the voltage overshoot phenomenon of stepping motor winding and the straight-through phenomenon of H bridge driving are contained, without the need to increasing sequencing control and the transient overvoltage absorbing circuit in dead band, simple structure, high reliability.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the circuit diagram of the embodiment of the present invention.
Embodiment
As shown in Figure 1, the invention provides a kind of voltage-controlled current source driving device for step-by-step, comprise the H bridge control unit for Driving Stepping Motor, H bridge control unit comprises and is positioned at high-end left upper arm PMOS Q1 and right upper arm PMOS Q2, and be positioned at lower-left arm NMOS tube Q3 and the bottom right arm NMOS tube Q4 of low side, left upper arm PMOS Q1 and bottom right arm NMOS tube Q4 forms first path of Driving Stepping Motor RL, and right upper arm PMOS Q2 and lower-left arm NMOS tube Q3 forms the alternate path of Driving Stepping Motor RL, left upper arm PMOS Q1 and the grid of right upper arm PMOS Q2 are connected to and control the first identical switching circuit 1 of PMOS break-make, structure and second switch circuit 2, and lower-left arm NMOS tube Q3 and the grid of bottom right arm NMOS tube Q4 are connected to and control the 3rd identical switching circuit 3 of NMOS tube break-make, structure and the 4th switching circuit 4, first switching circuit 1 comprises resistance R9, triode Q5, resistance R19 and resistance R11, the input signal of one end receive logic control voltage USR1 of resistance R9, the base stage of other end connecting triode Q5, the grounded emitter of triode Q5, connect the grid of left upper arm PMOS Q1 after the collector series resistance R19 of triode Q5, the grid of left upper arm PMOS Q1 also connects power Vcc by resistance R11, second switch circuit 2 comprises resistance R15, triode Q6, resistance R20 and resistance R13, the input signal of one end receive logic control voltage USR2 of resistance R15, the base stage of other end connecting triode Q6, the grounded emitter of triode Q6, connect the grid of right upper arm PMOS Q2 after the collector series resistance R19 of triode Q6, the grid of right upper arm PMOS Q2 also connects power Vcc by resistance R13, 3rd switching circuit 3 comprises resistance R10, triode Q7, resistance R23, resistance R12, resistance R27 and voltage stabilizing didoe D1, the input signal of one end receive logic control voltage USR1 of resistance R10, the base stage of other end connecting triode Q7, the grounded emitter of triode Q7, one end of the collector electrode contact resistance R23 of triode Q7, the other end contact resistance R12 and resistance R27 respectively of resistance R23, the other end of resistance R12 connects the grid of lower-left arm NMOS tube Q3 and the anode of voltage stabilizing didoe D1 respectively, the other end of resistance R27 connects power Vcc, the negative electrode of voltage stabilizing didoe D1 connects the low side of H bridge control unit, 4th switching circuit 4 comprises resistance R16, triode Q8, resistance R24, resistance R14, resistance R28 and voltage stabilizing didoe D2, the input signal of one end receive logic control voltage USR2 of resistance R16, the base stage of other end connecting triode Q8, the grounded emitter of triode Q8, one end of the collector electrode contact resistance R24 of triode Q8, the other end contact resistance R14 and resistance R28 respectively of resistance R24, the other end of resistance R14 connects the grid of bottom right arm NMOS tube Q4 and the anode of voltage stabilizing didoe D2 respectively, the other end of resistance R28 connects power Vcc, the negative electrode of voltage stabilizing didoe D2 connects the low side of H bridge control unit, described drive unit also comprises the voltage controlled current source circuit for control step motor winding RL electric current, voltage controlled current source circuit comprises operational amplifier N2 and Darlington transistor Q9, operational amplifier N2 adopts OP77, powered by power supply Vss, control voltage USR3 is through the input in the same way of resistance R31 input operational amplifier N2, the reverse input end of operational amplifier N2 connects the emitter of Darlington transistor Q9 through resistance R32, the output of operational amplifier N2 connects the base stage of Darlington transistor Q9, the collector electrode of Darlington transistor Q9 is connected with the low side of H bridge control unit, the emitter of Darlington transistor Q9 is by resistance R34 ground connection.
During work, logic control voltage USR1 and USR2 is the square-wave signal of the contrary 0 ~ Vdd in direction, namely the phase difference of USR1 and USR2 is 90 °, when USR1 be " 1 ", USR2 for " 0 " time, triode Q5 conducting, voltage V110 is the dividing potential drop of power Vcc through resistance R11 and resistance R19, the V of left upper arm PMOS Q1
gSmeet the cut-in voltage of conducting requirement, left upper arm PMOS Q1 conducting; Meanwhile, triode Q7 also conducting, voltage V109 is the dividing potential drop of power Vcc through resistance R23 and resistance R27, the V of lower-left arm NMOS tube Q3
gSdo not meet the cut-in voltage of conducting requirement, lower-left arm NMOS tube Q3 ends; Triode Q6 ends, and voltage 11 is the V of power Vcc, right upper arm PMOS Q2
gSdo not meet the cut-in voltage of conducting requirement, right upper arm PMOS Q2 ends; Triode Q8 is also cut-off state, and voltage V115 is power Vcc, through the pressure stabilization function of voltage stabilizing didoe D2, makes the V of bottom right arm NMOS tube Q4
gSbe stabilized in the rated value of voltage stabilizing didoe D2, meet the cut-in voltage of conducting requirement, bottom right arm NMOS tube Q4 conducting, form the current direction of stepping motor winding RL by a to b.In like manner, when USR1 be " 0 ", USR2 for " 1 " time, triode Q5 ends, and voltage V110 is power source voltage Vcc, the V of left upper arm PMOS Q1
gSdo not meet the cut-in voltage of conducting requirement, left upper arm PMOS Q1 ends; Triode Q7 also ends simultaneously, and voltage V109 is power source voltage Vcc, through the pressure stabilization function of voltage stabilizing didoe D1, makes the V of lower-left arm NMOS tube Q3
gSbe stabilized in the rated value of voltage stabilizing didoe D1, meet the cut-in voltage of conducting requirement, lower-left arm NMOS tube Q3 conducting; Triode Q6 conducting, voltage V114 is the dividing potential drop of power Vcc through resistance R13 and resistance R20, the V of right upper arm PMOS Q2
gSmeet the cut-in voltage of conducting requirement, right upper arm PMOS Q2 conducting; Triode Q8 is also conducting state simultaneously, and voltage V115 is the dividing potential drop of power Vcc through resistance R14 and resistance R28, the V of bottom right arm NMOS tube Q4
gSdo not meet the cut-in voltage of conducting requirement, bottom right arm NMOS tube Q4 ends, and forms the current direction of stepping motor winding RL by b to a.So as more advanced than USR2 90 ° of logic control voltage USR1, the current direction of stepping motor winding RL is by a to b; As more delayed than USR2 90 ° of logic control voltage USR1, the current direction of stepping motor winding RL is by b to a, and the rotating realizing stepping motor controls.Because the void of operational amplifier N2 leads to characteristic, control voltage USR3=V108, flows through the electric current I=V108/R34=USR3/R34 of stepping motor winding RL, and when the resistance of resistance R34 is constant, the electric current I flowing through stepping motor winding RL is just controlled by control voltage USR3; USR3 is the voltage control signal of sinusoidal wave absolute value envelope, and Darlington transistor Q9 is in continuous duty, and the electric current flowing through stepping motor winding RL is the current signal of sinusoidal wave absolute value envelope, realizes driving the control of stepping motor.In the course of work, utilize the stabilized voltage characteristic of voltage stabilizing didoe D1, D2, control the value of NMOS tube pinch-off voltage, meet the derate requirement that device uses; Driven the metal-oxide-semiconductor of H bridge by switching circuit, make H bridge control unit make the conducting according to the order of sequence of the first path and alternate path as required, realize the control of the rotation direction to stepping motor; By voltage-controlled current source circuit realiration control voltage to the control flowing through stepping motor winding current, thus reach the object of control step motor speed, Darlington transistor is operated in linear zone, the voltage overshoot phenomenon of stepping motor winding and the straight-through phenomenon of H bridge driving are contained, without the need to increasing sequencing control and the transient overvoltage absorbing circuit in dead band, simple structure, high reliability.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent replacement, equivalence change and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (4)
1. a voltage-controlled current source driving device for step-by-step, comprise the H bridge control unit for Driving Stepping Motor, H bridge control unit comprises and is positioned at high-end left upper arm PMOS (Q1) and right upper arm PMOS (Q2), and be positioned at lower-left arm NMOS tube (Q3) of low side and bottom right arm NMOS tube (Q4), left upper arm PMOS (Q1) and bottom right arm NMOS tube (Q4) form the first path, right upper arm PMOS (Q2) and lower-left arm NMOS tube (Q3) form alternate path, it is characterized in that, described left upper arm PMOS (Q1) is connected to the grid of right upper arm PMOS (Q2) and controls PMOS break-make, the first switching circuit (1) that structure is identical and second switch circuit (2), lower-left arm NMOS tube (Q3) is connected to the grid of bottom right arm NMOS tube (Q4) and controls NMOS tube break-make, the 3rd switching circuit (3) that structure is identical and the 4th switching circuit (4), described drive unit also comprises the voltage controlled current source circuit for control step machine winding current, voltage controlled current source circuit comprises operational amplifier (N2) and Darlington transistor (Q9), control voltage (USR3) is through the input in the same way of resistance R31 input operational amplifier (N2), the reverse input end of operational amplifier (N2) connects the emitter of Darlington transistor (Q9) through resistance R32, the output of operational amplifier (N2) connects the base stage of Darlington transistor (Q9), the collector electrode of Darlington transistor (Q9) is connected with the low side of H bridge control unit, the emitter of Darlington transistor (Q9) is by resistance R34 ground connection.
2. a kind of voltage-controlled current source driving device for step-by-step according to claim 1, it is characterized in that, described first switching circuit (1) comprises resistance R9, triode Q5, resistance R19 and resistance R11, the input signal of one end receive logic control voltage of resistance R9, the base stage of other end connecting triode Q5, the grounded emitter of triode Q5, connect the grid of left upper arm PMOS after the collector series resistance R19 of triode Q5, the grid of left upper arm PMOS also connects power Vcc by resistance R11.
3. a kind of voltage-controlled current source driving device for step-by-step according to claim 1 and 2, it is characterized in that, described 3rd switching circuit (3) comprises resistance R10, triode Q7, resistance R23, resistance R12, resistance R27 and diode D1, the input signal of one end receive logic control voltage of resistance R10, the base stage of other end connecting triode Q7, the grounded emitter of triode Q7, one end of the collector electrode contact resistance R23 of triode Q7, the other end contact resistance R12 and resistance R27 respectively of resistance R23, the other end of resistance R12 connects the grid of lower-left arm NMOS tube and the anode of voltage stabilizing didoe D1 respectively, the other end of resistance R27 connects power Vcc, the negative electrode of voltage stabilizing didoe D1 connects the collector electrode of Darlington transistor (Q9).
4. a kind of voltage-controlled current source driving device for step-by-step according to claim 1, is characterized in that, described operational amplifier adopts OP77.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535315.6A CN104283470B (en) | 2014-10-13 | A kind of voltage-controlled current source driving device for step-by-step |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535315.6A CN104283470B (en) | 2014-10-13 | A kind of voltage-controlled current source driving device for step-by-step |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104283470A true CN104283470A (en) | 2015-01-14 |
| CN104283470B CN104283470B (en) | 2017-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253859A (en) * | 2016-08-01 | 2016-12-21 | 中国电子科技集团公司第二十四研究所 | A kind of photo-detector and assembly thereof and photoelectricity front-end amplifier circuit |
| CN107240756A (en) * | 2017-05-19 | 2017-10-10 | 上海宇航系统工程研究所 | A kind of antenna expansion controller with on-orbit fault diagnosis and autonomous processing function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04138098A (en) * | 1990-09-27 | 1992-05-12 | Nec Corp | Motor drive integrated circuit |
| CN1512658A (en) * | 2002-12-27 | 2004-07-14 | ���µ�����ҵ��ʽ���� | Step motor driving device and method |
| CN102624307A (en) * | 2011-01-26 | 2012-08-01 | 山东朗进科技股份有限公司 | Constant torque driving method and driving circuit of stepping motor |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04138098A (en) * | 1990-09-27 | 1992-05-12 | Nec Corp | Motor drive integrated circuit |
| CN1512658A (en) * | 2002-12-27 | 2004-07-14 | ���µ�����ҵ��ʽ���� | Step motor driving device and method |
| CN102624307A (en) * | 2011-01-26 | 2012-08-01 | 山东朗进科技股份有限公司 | Constant torque driving method and driving circuit of stepping motor |
Non-Patent Citations (2)
| Title |
|---|
| 徐武雄: ""步进电机H桥型驱动电路设计及其应用"", 《咸宁学院学报》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253859A (en) * | 2016-08-01 | 2016-12-21 | 中国电子科技集团公司第二十四研究所 | A kind of photo-detector and assembly thereof and photoelectricity front-end amplifier circuit |
| CN107240756A (en) * | 2017-05-19 | 2017-10-10 | 上海宇航系统工程研究所 | A kind of antenna expansion controller with on-orbit fault diagnosis and autonomous processing function |
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