CN207460045U - A kind of voice coil motor drive circuit - Google Patents
A kind of voice coil motor drive circuit Download PDFInfo
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- CN207460045U CN207460045U CN201721460458.0U CN201721460458U CN207460045U CN 207460045 U CN207460045 U CN 207460045U CN 201721460458 U CN201721460458 U CN 201721460458U CN 207460045 U CN207460045 U CN 207460045U
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Abstract
The utility model discloses a kind of voice coil motor drive circuit, to solve the problems, such as that it is poor that existing voice coil motor drive circuit is affected by temperature stability.The circuit includes：External interface circuit, for input voltage；Logic management circuit is powered on, powers on logic and when detecting current foldback circuit output alarm signal for manage voice coil motor drive circuit, the timely external output loop of rupturing duty；Power driving circuit, for providing programmable current for the voice coil motor；Current collection circuit is connected with the power driving circuit, for gathering the electric current for flowing through the voice coil motor；Current foldback circuit, for cutting off driving output in time in the voice coil motor drive circuit short circuit；PI computing circuits are simulated, for obtaining the current information of the current collection circuit feedback and simulating PI computings.The utility model uses Double feedback system, realizes the constant current output that driver is stablized, avoids the influence brought by motor impedance fluctuations.
Description
Technical field
The utility model is related to voice coil motor technical field more particularly to a kind of voice coil motor drive circuits.
Background technology
Voice coil motor is the new direct-driving motor for having special construction, with simple in structure, quick response, Gao Jia
The characteristics such as speed are widely used among pinpoint industrial automation system.Therefore, it is wherein electric for the driving of voice coil motor
Road design is particularly important.
Common drive system bandwidth is relatively low, generally in 2KHZ or so, limits voice coil to a certain extent, in addition voice coil
The impedance of motor is affected by temperature larger, and as its Wen Sheng higher, impedance becomes larger, and the stability of the constant current output of driver can be received
To influence.
The content of the invention
The technical problems to be solved in the utility model is designed to provide a kind of voice coil motor drive circuit, existing to solve
Some voice coil motor drive circuits are affected by temperature the problem of stability is poor.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of voice coil motor drive circuit, including：
External interface circuit, for input voltage；
Logic management circuit is powered on, is connected with the external interface circuit, for managing voice coil motor drive circuit
Electric logic and when detecting current foldback circuit output alarm signal, the timely external output loop of rupturing duty；
Power driving circuit powers on logic management circuit and voice coil motor is connected, for for the voice coil motor with described
Programmable current is provided；
Current collection circuit is connected with the power driving circuit, for gathering the electric current for flowing through the voice coil motor；
Current foldback circuit is connected with the current collection circuit and the logic management circuit that powers on, for described
Driving output is cut off during voice coil motor drive circuit short circuit in time；
PI computing circuits are simulated, with the power driving circuit, the current collection circuit and external interface electricity
Road connects, for obtaining the current information of the current collection circuit feedback and simulating PI computings.
Further, the logic management circuit that powers on is made of digital logic device.
The power driving circuit is by first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th electricity
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the tenth
Four resistance, the 15th resistance, the 16th resistance, operational amplifier, capacitance, the first triode, the second triode, the suppression of the first transient state
Diode processed, the second Transient Suppression Diode, the 3rd Transient Suppression Diode, the 4th Transient Suppression Diode, the first diode,
Second diode, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, rectifier and slide rheostat composition；
The anode of one end connection motor of the first resistor；The other end of the first resistor simultaneously connects the second resistance
One end, one end, one end of the 4th resistance and the reverse input end of the operational amplifier of the 3rd resistor；
The other end connection signal input of the second resistance；
The other end of the 3rd resistor connects one end of the capacitance；The other end of the capacitance simultaneously connects the 4th electricity
The other end of resistance, one end of the 6th resistance, first triode transmitting collection, second triode collector,
The cathode of second Transient Suppression Diode, the draining of first metal-oxide-semiconductor, first Transient Suppression Diode it is negative
Pole；
The positive input of the operational amplifier connects one end of the 8th resistance；Another termination of 8th resistance
Ground；
The first interface of the operational amplifier and connect the other end of the 8th resistance, the 5th resistance one end,
The base stage of the base stage of first triode, one end of the 7th resistance and second triode；5th resistance
The other end connects the 8th interface of the operational amplifier；The other end of 7th resistance connects the of the operational amplifier
Two interfaces；
6th interface connection -48V power supplys of the operational amplifier；
The anode of second Transient Suppression Diode simultaneously connects the anode of the 4th Transient Suppression Diode, described first
The anode of the source electrode of metal-oxide-semiconductor, the drain electrode of second metal-oxide-semiconductor and the 3rd Transient Suppression Diode；
The grid of first metal-oxide-semiconductor connects one end of the 9th resistance；The other end of 9th resistance simultaneously meets institute
State anode, one end of the tenth resistance of the first Transient Suppression Diode；The other end of tenth resistance simultaneously connects described
One end of 11 resistance and the 7th interface of the rectifier；Another termination+48V power supplys of 11st resistance；
The grid of second metal-oxide-semiconductor connects one end of the 12nd resistance；The other end of 12nd resistance is simultaneously
Connect the cathode of the 3rd Transient Suppression Diode and one end of the 13rd resistance；The other end of 13rd resistance is simultaneously
Connect the 5th interface of the rectifier and one end of the 14th resistance；Other end connection-the 48V of 14th resistance
Power supply；
The first interface of the rectifier simultaneously connects the second interface of the rectifier and one end of the 15th resistance；Institute
State the anode of the other end connection 5V power supplys of the 15th resistance；3rd interface connection+48V power supplys of the rectifier；
The source electrode of second metal-oxide-semiconductor simultaneously connects the cathode of the 4th Transient Suppression Diode, first diode
Anode with after the cathode of second diode, the first interface of the slide rheostat connect and the slide rheostat
Two interfaces；3rd interface of the slide rheostat simultaneously connects the 4th interface of the P2 and one end of the 16th resistance；Institute
State the other end ground connection of the 16th resistance；Cathode connection+48V the power supplys of first diode；Second diode is just
Pole connection -48V power supplys.
The utility model has the following advantages compared with traditional technology：
1. the utility model use Double feedback system, current acquisition information feed back to respectively main power drive circuit with
And front end analogue PI arithmetic systems, the constant current output of the driver stabilization of realization avoid the shadow brought by motor impedance fluctuations
It rings.
2. the utility model realizes high Broadband emission (the actual measurement system broadband of driver using PI control technologies are simulated
Up to 5KHZ), the capability of fast response of lifting system.
Description of the drawings
Fig. 1 is a kind of voice coil motor drive circuit structure chart that the utility model embodiment provides；
Fig. 2 is the power driving circuit structure chart that the use of the new type embodiment provides.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
The utility model embodiment provides a kind of voice coil motor drive circuit, as shown in Figure 1, including：
External interface circuit 1, for input voltage；
Logic management circuit 2 is powered on, is connected with external interface circuit 1, for managing powering on for voice coil motor drive circuit
Logic and when detecting 5 output alarm signal of current foldback circuit, the timely external output loop of rupturing duty；
Power driving circuit 3 is connected with powering on logic management circuit 2 and voice coil motor 7, for being provided for voice coil motor 7
Programmable current；
Current collection circuit 4 is connected with power driving circuit 3, for gathering the electric current for flowing through voice coil motor 7；
Current foldback circuit 5, with current collection circuit 4 and power on logic management circuit 2 be connected, in voice coil motor
Driving output is cut off during driving circuit short circuit in time；
PI computing circuits 6 are simulated, are connected with the power driving circuit 3, current collection circuit 4 and external interface circuit 1
It connects, for obtaining the current information of the feedback of current collection circuit 4 and simulating PI computings.
Wherein, logic management circuit 2 is powered on to be made of digital logic device.
The closed loop circuit that power driving circuit 3 is formed using power amplifier, operational amplifier and capacitance resistance ware.
The utility model embodiment provides a kind of voice coil and may be programmed voice coil motor drive circuit, can give full play to voice coil electricity
The quick response of machine and the characteristic of high acceleration.
Specifically, the voice coil motor drive circuit of the present embodiment by external interface circuit 1, power on logic management circuit 2, work(
Rate driving circuit 3, current collection circuit 4, current foldback circuit 5, simulation PI computing circuits 6 and voice coil motor 7 form.
Wherein, power on logic management circuit 2 to be connected with external interface circuit 1, power driving circuit 3 is with powering on logic management
Circuit 2 and voice coil motor 7 connect, and current collection circuit 4 is connected with power driving circuit, current foldback circuit 5 and current acquisition
It circuit 4 and powers on logic management circuit 2 and connects, simulation PI computing circuits 6 and power driving circuit 3, current collection circuit 4 and outer
Portion's interface circuit 1 connects.
It powers on logic management circuit 1 to be built by digital logic device, powers on logic for driving circuit, detect
During the alarm signal that current foldback circuit 5 exports, the timely external output loop of rupturing duty.
The closed loop that power driving circuit 3 is formed using the precision operational-amplifier and group container piece of power amplifier and periphery
System, for providing programmable electric current for voice coil motor 7.
Current collection circuit 4 flows through the electric current of voice coil motor 7 for gathering, and system speed ring design provides ginseng in order to control
It examines.
Above-mentioned programmable voice coil motor drive circuit generates constant driving according to 1 input voltage signal of external interface circuit
Current signal, to drive the voice coil motor.
In the utility model embodiment, using Double feedback system, current acquisition information feeds back to power drive respectively
Circuit 3 and front end analogue PI computing circuits 6 are realized the constant current output that driver is stablized, are avoided because motor impedance fluctuations are brought
Influence.
Also, the present embodiment realizes the high bandwidth output of driver, common driver using simulation PI control technologies
System bandwidth is 2KHZ, and the present embodiment actual measurement system is up to 5KHZ.Improve the capability of fast response of system.
Wherein, power driving circuit 3 by first resistor 301, second resistance 302,3rd resistor 303, the 4th resistance 304,
5th resistance 305, the 6th resistance 306, the 7th resistance 307, the 8th resistance 308, the 9th resistance 309, the tenth resistance the 310, the tenth
One resistance 311, the 12nd resistance 312, the 13rd resistance 313, the 14th resistance 314, the 15th resistance 315, the 16th resistance
316th, operational amplifier 317, capacitance 318, the first triode 319, the second triode 320, the first Transient Suppression Diode 321,
Second Transient Suppression Diode 322, the 3rd Transient Suppression Diode 323, the 4th Transient Suppression Diode 324, the first diode
325th, the second diode 326, the first metal-oxide-semiconductor 327, the second metal-oxide-semiconductor 328, rectifier 329 and slide rheostat 330 form；
The anode of one end connection voice coil motor 7 of first resistor 301；The other end of first resistor 301 simultaneously connects second resistance
302 one end, one end of 3rd resistor 303, one end of the 4th resistance 304 and the reverse input end of operational amplifier 317；
The other end connection signal input of second resistance 302；
One end of the other end connection capacitance 318 of 3rd resistor 303；The other end of capacitance 318 simultaneously connects the 4th resistance 304
The other end, one end of the 6th resistance 306, the transmitting collection of the first triode 319, the collector of the second triode 320, the second transient state
Inhibit drain electrode, the cathode of the first Transient Suppression Diode 321 of the cathode, the first metal-oxide-semiconductor 325 of diode 322；
One end of the 8th resistance 308 of positive input connection of operational amplifier 317；The other end ground connection of 8th resistance 308；
The first interface of operational amplifier 317 simultaneously connects the other end of the 8th resistance 308, one end of the 5th resistance 305, first
The base stage of the base stage of triode 319, one end of the 7th resistance 307 and the second triode 320；The other end of 5th resistance 305 connects
Connect the 8th interface of operational amplifier 317；The second interface of the other end concatenation operation amplifier 317 of 7th resistance 307；
6th interface connection -48V power supplys of operational amplifier 317；
The anode of second Transient Suppression Diode 322 simultaneously connects the anode of the 4th Transient Suppression Diode 324, the first metal-oxide-semiconductor
The anode of 327 source electrode, the drain electrode of the second metal-oxide-semiconductor 328 and the 3rd Transient Suppression Diode 323；
The grid of first metal-oxide-semiconductor 327 connects one end of the 9th resistance 309；The other end of 9th resistance 309 simultaneously connects first
One end of the anode of Transient Suppression Diode 321, the tenth resistance 310；The other end of tenth resistance 310 simultaneously connects the 11st resistance
311 one end and the 7th interface of rectifier 329；Another termination+48V power supplys of 11st resistance 311；
The grid of second metal-oxide-semiconductor 328 connects one end of the 12nd resistance 312；The other end of 12nd resistance 312 simultaneously connects
The cathode of three Transient Suppression Diodes 323 and one end of the 13rd resistance 313；The other end of 13rd resistance 313 simultaneously connects rectification
5th interface of device 329 and one end of the 14th resistance 314；Other end connection -48V the power supplys of 14th resistance 314；
The first interface of rectifier 329 simultaneously connects the second interface of rectifier 329 and one end of the 15th resistance 315；Tenth
The anode of the other end connection 5V power supplys of five resistance 315；3rd interface connection+48V power supplys of rectifier 329；
The source electrode of second metal-oxide-semiconductor 328 simultaneously connects the cathode of the 4th Transient Suppression Diode 324, the anode of the first diode 325
With after the cathode of the second diode 326, the first interface of slide rheostat 330 connects and slide rheostat 330 second connects
Mouthful；3rd interface of slide rheostat 330 simultaneously connects the 4th interface of slide rheostat 330 and one end of the 16th resistance 316；
The other end ground connection of 16th resistance 316；Cathode connection+48V the power supplys of first diode 325；The anode of second diode 326
Connection -48V power supplys.
Power driving circuit 3 is connected with powering on logic management circuit 2 and voice coil motor 7, if foregoing circuit is understood, Ke Yiwei
Voice coil motor 7 provides programmable current.
+ 48V power supplys and -48V power supplys are two groups of power supplys altogether in the present embodiment.According to foregoing circuit figure, using simulation PI
Control technology realizes the high Broadband emission of driver, the capability of fast response of lifting system
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (3)
1. a kind of voice coil motor drive circuit, which is characterized in that including：
External interface circuit, for input voltage；
Logic management circuit is powered on, is connected with the external interface circuit, is patrolled for managing powering on for voice coil motor drive circuit
It collects and when detecting current foldback circuit output alarm signal, the timely external output loop of rupturing duty；
Power driving circuit, with it is described power on logic management circuit and voice coil motor be connected, for being provided for the voice coil motor
Programmable current；
Current collection circuit is connected with the power driving circuit, for gathering the electric current for flowing through the voice coil motor；
Current foldback circuit is connected with the current collection circuit and the logic management circuit that powers on, in the voice coil
Driving output is cut off during motor-drive circuit short circuit in time；
PI computing circuits are simulated, are connected with the power driving circuit, the current collection circuit and the external interface circuit
It connects, for obtaining the current information of the current collection circuit feedback and simulating PI computings.
2. a kind of voice coil motor drive circuit according to claim 1, which is characterized in that described to power on logic management circuit
It is made of digital logic device.
3. a kind of voice coil motor drive circuit according to claim 1, which is characterized in that the power driving circuit is by
One resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th electricity
Resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance, the 16th electricity
Resistance, operational amplifier, capacitance, the first triode, the second triode, the first Transient Suppression Diode, the second transient state inhibit two poles
Pipe, the 3rd Transient Suppression Diode, the 4th Transient Suppression Diode, the first diode, the second diode, the first metal-oxide-semiconductor, second
Metal-oxide-semiconductor, rectifier and slide rheostat composition；
The anode of one end connection voice coil motor of the first resistor；The other end of the first resistor simultaneously connects the second resistance
One end, one end, one end of the 4th resistance and the reverse input end of the operational amplifier of the 3rd resistor；
The other end connection signal input of the second resistance；
The other end of the 3rd resistor connects one end of the capacitance；The other end of the capacitance simultaneously connects the 4th resistance
The other end, one end of the 6th resistance, transmitting collection, the collector, described of second triode of first triode
The cathode of second Transient Suppression Diode, the draining of first metal-oxide-semiconductor, the cathode of first Transient Suppression Diode；
The positive input of the operational amplifier connects one end of the 8th resistance；The other end ground connection of 8th resistance；
The first interface of the operational amplifier and the one end, described for connecing the other end of the 8th resistance, the 5th resistance
The base stage of the base stage of first triode, one end of the 7th resistance and second triode；5th resistance it is another
End connects the 8th interface of the operational amplifier；The second of the other end connection operational amplifier of 7th resistance connects
Mouthful；
6th interface connection -48V power supplys of the operational amplifier；
The anode of second Transient Suppression Diode simultaneously meets the anode of the 4th Transient Suppression Diode, the first MOS
The anode of the source electrode of pipe, the drain electrode of second metal-oxide-semiconductor and the 3rd Transient Suppression Diode；
The grid of first metal-oxide-semiconductor connects one end of the 9th resistance；The other end of 9th resistance simultaneously connects described
One end of the anode of one Transient Suppression Diode, the tenth resistance；The other end of tenth resistance simultaneously connects the described 11st
One end of resistance and the 7th interface of the rectifier；Another termination+48V power supplys of 11st resistance；
The grid of second metal-oxide-semiconductor connects one end of the 12nd resistance；The other end of 12nd resistance simultaneously meets institute
State the cathode of the 3rd Transient Suppression Diode and one end of the 13rd resistance；The other end of 13rd resistance simultaneously meets institute
State the 5th interface of rectifier and one end of the 14th resistance；Other end connection -48V the power supplys of 14th resistance；
The first interface of the rectifier simultaneously connects the second interface of the rectifier and one end of the 15th resistance；Described
The anode of the other end connection 5V power supplys of 15 resistance；3rd interface connection+48V power supplys of the rectifier；
The source electrode of second metal-oxide-semiconductor simultaneously connects the cathode of the 4th Transient Suppression Diode, the anode of first diode
With after the cathode of second diode, the first interface of the slide rheostat connects and the slide rheostat second connects
Mouthful；3rd interface of the slide rheostat and connect the slide rheostat the 4th interface and the 16th resistance one
End；The other end ground connection of 16th resistance；Cathode connection+48V the power supplys of first diode；Second diode
Anode connection -48V power supplys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721460458.0U CN207460045U (en) | 2017-11-06 | 2017-11-06 | A kind of voice coil motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721460458.0U CN207460045U (en) | 2017-11-06 | 2017-11-06 | A kind of voice coil motor drive circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207460045U true CN207460045U (en) | 2018-06-05 |
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ID=62253873
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721460458.0U Active CN207460045U (en) | 2017-11-06 | 2017-11-06 | A kind of voice coil motor drive circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690685A (en) * | 2019-09-06 | 2020-01-14 | 珠海格力电器股份有限公司 | High-precision overcurrent protection circuit and method and motor |
| CN110752810A (en) * | 2019-11-04 | 2020-02-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Digit adjustable voice coil motor drive circuit |
| CN113300545A (en) * | 2021-03-30 | 2021-08-24 | 深圳市世宗自动化设备有限公司 | Matching circuit of motor driver |
-
2017
- 2017-11-06 CN CN201721460458.0U patent/CN207460045U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690685A (en) * | 2019-09-06 | 2020-01-14 | 珠海格力电器股份有限公司 | High-precision overcurrent protection circuit and method and motor |
| CN110752810A (en) * | 2019-11-04 | 2020-02-04 | 中国兵器工业集团第二一四研究所苏州研发中心 | Digit adjustable voice coil motor drive circuit |
| CN113300545A (en) * | 2021-03-30 | 2021-08-24 | 深圳市世宗自动化设备有限公司 | Matching circuit of motor driver |
| CN113300545B (en) * | 2021-03-30 | 2022-09-06 | 深圳市世宗自动化设备有限公司 | Matching circuit of motor driver |
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