CN104779886A - Low-vibration motor driver structure - Google Patents
Low-vibration motor driver structure Download PDFInfo
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- CN104779886A CN104779886A CN201510207124.1A CN201510207124A CN104779886A CN 104779886 A CN104779886 A CN 104779886A CN 201510207124 A CN201510207124 A CN 201510207124A CN 104779886 A CN104779886 A CN 104779886A
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Abstract
The invention relates to the technical field of motor drivers, in particular to a low-vibration motor driver structure. The low-vibration motor driver structure comprises a drive circuit. The drive circuit comprises an H bridge circuit and a vibration sensor arranged on the part, close to the H bridge circuit, of a motor driver. The output end of a sensor circuit of the vibration sensor is connected to the input end of a time domain and frequency domain conversion circuit, the output end of the time domain and frequency domain conversion circuit is connected to the input end of a subtraction circuit, the input end of the subtraction circuit is further connected with the output end of a preset frequency spectrum circuit, the output end of the subtraction circuit is connected to the input end of an integral circuit, the output end of the integral circuit is connected to the input end of a frequency jitter circuit, the input end of the frequency jitter circuit is further connected with the output end of a PWM circuit, the output end of the frequency jitter circuit is connected to the input end of an H bridge drive circuit, the output end of the H bridge drive circuit is connected to the input end of the H bridge circuit, and the output end of the H bridge circuit is connected to a motor coil. The low-vibration motor driver structure is stable in operation, low in energy consumption and high in safety.
Description
Technical field
the present invention relates to motor driver technical field, be specially a kind of low driven by vibrating motors device structure.
Background technology
motor operationally can produce vibration, certain harm is produced to the motor device of surrounding and surrounding people, particularly motor unsteadiness at work, the vibration frequency that as easy as rolling off a log formation is superpower also causes great damage to equipment and personnel, setting causes resonance to wait dangerous situation to occur, all there is above-mentioned problem in existing motor driver, needs a kind of operation more stable, can maintain the motor driver of the vibration of lower frequency.
Summary of the invention
an object of the present invention is to provide a kind of stable, power consumption less and the high low driven by vibrating motors device of fail safe.
above-mentioned technical purpose of the present invention is achieved by the following technical programs: a kind of low driven by vibrating motors device structure, comprise drive circuit, drive circuit comprises H-bridge circuit, be placed in the vibrating sensor of motor driver by H-bridge circuit part, the output of the sensor circuit of described vibrating sensor is connected to the input of a time-domain and frequency-domain change-over circuit, the output of described time-domain and frequency-domain change-over circuit is connected to the input of a subtraction circuit, the input of described subtraction circuit is also connected with an output presetting spectrum circuits, the output of described subtraction circuit is connected to the input of an integrating circuit, the output of described integrating circuit is connected to the input of a frequency jitter circuit, the input of described frequency jitter circuit is also connected with the output of a pwm circuit, the output of described frequency jitter circuit is connected to the input of a H-bridge drive circuit, the output of described H-bridge drive circuit is connected to the input of described H-bridge circuit, the output of described H-bridge circuit is connected to motor coil, H-bridge drive circuit is two-phase H-bridge drive circuit, H-bridge circuit is two-phase H-bridge circuit, motor coil is two-phase induction motor coil.
in technique scheme, the vibration signal utilizing vibrating sensor to detect also exports analog circuit signal to time-domain and frequency-domain change-over circuit by sensor circuit, then the frequency circuit signal preset of the frequency circuit signal of each frequency of time-domain and frequency-domain change-over circuit and default spectrum circuits is obtained a difference frequency circuit signal by subtraction circuit, output frequency control signal is amplified again by integrating circuit, control to come from PWM(pulse width modulation by the effect of frequency jitter circuit) signal of circuit, the operating frequency of pwm circuit is shaken, the frequency spectrum concentrated, by trembling, frequency division free combat is flat can maintain a comparatively stable state, tremble in the cycle frequently at one, the frequency control signal exported by integrating circuit controls the holding time length of each frequency, the circuit control signal of a H-bridge drive circuit is exported by frequency jitter circuit, H-bridge circuit work is driven again by H-bridge drive circuit, and motor coil is also worked, this circuit can make system comparatively fast to stablize, and the frequency self-energy that vibration is being concerned about that motor produces will be controlled in certain limit, reduce the spectral energy density of motor oscillating, maintain a lower state, whole circuit is higher compared to traditional circuit stability, less energy consumption, heat radiation is few, preset the value that the predetermined frequency one of the frequency circuit signal of spectrum circuits is less, it is a value being similar to safer motor oscillating frequency, when the signal frequency difference of itself and time-domain and frequency-domain change-over circuit is larger positive, the time that the frequency extending this frequency by frequency jitter circuit stops, otherwise it is then contrary, in time equaling 0, it is made to keep the time of staying constant, play the function of this circuit so better, motor coil can adopt existing motor coil, vibrating sensor can adopt existing transducer, time-domain and frequency-domain change-over circuit, subtraction circuit, preset spectrum circuits, integrating circuit, frequency jitter circuit, pwm circuit, frequency jitter circuit, H-bridge drive circuit, H-bridge circuit all can adopt existing circuit, by reasonably selecting the stability of the operation improving circuit further, reduce energy consumption, heat radiation is few, the spectral energy density of motor oscillating can be reduced better, reduce the appearance of superpower motor oscillating.
as to preferably of the present invention, H-bridge circuit comprises power end and earth terminal, two branch roads are parallel with between described power end and earth terminal, every bar branch road is all in series with two metal-oxide-semiconductor field effect transistors, be respectively the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, the grid of each metal-oxide-semiconductor field effect transistor is connected with the exit point of H-bridge drive circuit output as the input endpoint of H-bridge circuit input, the source electrode of the first metal-oxide-semiconductor is connected with power end, the source electrode of the second metal-oxide-semiconductor is connected with earth terminal, the drain electrode of the first metal-oxide-semiconductor on same branch road is connected with the drain electrode of the second metal-oxide-semiconductor and is connected in this junction and draws the exit point of electric wire as H-bridge circuit.The stability of the operation of further raising circuit, reduces energy consumption, and heat radiation is few, can reduce the spectral energy density of motor oscillating better, reduce the appearance of superpower motor oscillating.
as to preferably of the present invention, the frequency presetting the output signal of spectrum circuits be less than motor natural frequency five/be greater than 1/20th of motor natural frequency in the lump.Further improve the stability of the operation of circuit, reduce energy consumption, heat radiation is few, can reduce the spectral energy density of motor oscillating better, reduce the appearance of superpower motor oscillating.
beneficial effect of the present invention: Stability Analysis of Structures, less and endanger little, heat radiation is few, not easily always damages, and reduces the spectral energy density of motor oscillating for safe and reliable to operation, power consumption.
Accompanying drawing explanation
fig. 1 is the circuit theory diagrams of the embodiment of the present invention;
fig. 2 is the H-bridge circuit schematic diagram of the embodiment of the present invention;
fig. 3 is the motor coil schematic diagram of the embodiment of the present invention.
in figure: 1, motor coil, 2, vibrating sensor, 3, time-domain and frequency-domain change-over circuit, 4, subtraction circuit, 5, preset spectrum circuits, 6, integrating circuit, 7, frequency jitter circuit, 8, pwm circuit, 9, H-bridge drive circuit, 10, H-bridge circuit, 101, power end, 102, earth terminal, the 103, first metal-oxide-semiconductor, the 104, second metal-oxide-semiconductor.
Embodiment
following specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification, as long as but be all subject to the protection of Patent Law in right of the present invention.
embodiment, as Fig. 1, 2, shown in 3, a kind of low driven by vibrating motors device structure, comprise drive circuit, drive circuit comprises H-bridge circuit 10, be placed in the vibrating sensor 2 of motor driver by H-bridge circuit 10 part, the output of the sensor circuit of described vibrating sensor 2 is connected to the input of a time-domain and frequency-domain change-over circuit 3, the output of described time-domain and frequency-domain change-over circuit 3 is connected to the input of a subtraction circuit 4, the input of described subtraction circuit 4 is also connected with an output presetting spectrum circuits 5, the output of described subtraction circuit 4 is connected to the input of an integrating circuit 6, the output of described integrating circuit 6 is connected to the input of a frequency jitter circuit 7, the input of described frequency jitter circuit 7 is also connected with the output of a pwm circuit 8, the output of described frequency jitter circuit 7 is connected to the input of a H-bridge drive circuit 9, the output of described H-bridge drive circuit 9 is connected to the input of described H-bridge circuit 10, the output of described H-bridge circuit 10 is connected to motor coil 1, H-bridge drive circuit 9 is two-phase H-bridge drive circuit, H-bridge circuit 10 is two-phase H-bridge circuit, motor coil 1 is two-phase induction motor coil.
h-bridge circuit 10 comprises power end 101 and earth terminal 102, two branch roads are parallel with between described power end 101 and earth terminal 102, every bar branch road is all in series with two metal-oxide-semiconductor field effect transistors, be respectively the first metal-oxide-semiconductor 103 and the second metal-oxide-semiconductor 104, the grid of each metal-oxide-semiconductor field effect transistor is connected with the exit point of H-bridge drive circuit 9 output as the input endpoint of H-bridge circuit 10 input, the source electrode of the first metal-oxide-semiconductor 103 is connected with power end 101, the source electrode of the second metal-oxide-semiconductor 104 is connected with earth terminal 102, the drain electrode of the first metal-oxide-semiconductor 103 on same branch road is connected with the drain electrode of the second metal-oxide-semiconductor 104 and is connected in this junction and draws the exit point of electric wire as H-bridge circuit 10.The frequency of output signal presetting spectrum circuits 5 be less than motor natural frequency five/be greater than 1/20th of motor natural frequency in the lump.
Claims (3)
1. one kind low driven by vibrating motors device structure, comprise drive circuit, it is characterized in that: drive circuit comprises H-bridge circuit (10), be placed in the vibrating sensor (2) of motor driver by H-bridge circuit (10) part, the output of the sensor circuit of described vibrating sensor (2) is connected to the input of a time-domain and frequency-domain change-over circuit (3), the output of described time-domain and frequency-domain change-over circuit (3) is connected to the input of a subtraction circuit (4), the input of described subtraction circuit (4) is also connected with an output presetting spectrum circuits (5), the output of described subtraction circuit (4) is connected to the input of an integrating circuit (6), the output of described integrating circuit (6) is connected to the input of a frequency jitter circuit (7), the input of described frequency jitter circuit (7) is also connected with the output of a pwm circuit (8), the output of described frequency jitter circuit (7) is connected to the input of a H-bridge drive circuit (9), the output of described H-bridge drive circuit (9) is connected to the input of described H-bridge circuit (10), the output of described H-bridge circuit (10) is connected to motor coil (1), H-bridge drive circuit (9) is two-phase H-bridge drive circuit, H-bridge circuit (10) is two-phase H-bridge circuit, motor coil (1) is two-phase induction motor coil.
2. one according to claim 1 low driven by vibrating motors device structure, it is characterized in that: H-bridge circuit (10) comprises power end (101) and earth terminal (102), two branch roads are parallel with between described power end (101) and earth terminal (102), every bar branch road is all in series with two metal-oxide-semiconductor field effect transistors, be respectively the first metal-oxide-semiconductor (103) and the second metal-oxide-semiconductor (104), the grid of each metal-oxide-semiconductor field effect transistor is connected with the exit point of H-bridge drive circuit (9) output as the input endpoint of H-bridge circuit (10) input, the source electrode of the first metal-oxide-semiconductor (103) is connected with power end (101), the source electrode of the second metal-oxide-semiconductor (104) is connected with earth terminal (102), the drain electrode of the first metal-oxide-semiconductor (103) on same branch road is connected with the drain electrode of the second metal-oxide-semiconductor (104) and is connected in this junction and draws the exit point of electric wire as H-bridge circuit (10).
3. one according to claim 2 low driven by vibrating motors device structure, is characterized in that: the frequency of output signal presetting spectrum circuits (5) be less than motor natural frequency five/be greater than 1/20th of motor natural frequency in the lump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207124.1A CN104779886A (en) | 2015-04-28 | 2015-04-28 | Low-vibration motor driver structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207124.1A CN104779886A (en) | 2015-04-28 | 2015-04-28 | Low-vibration motor driver structure |
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| Publication Number | Publication Date |
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| CN104779886A true CN104779886A (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510207124.1A Pending CN104779886A (en) | 2015-04-28 | 2015-04-28 | Low-vibration motor driver structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562357A (en) * | 2018-01-11 | 2018-09-21 | 中山天业智能装备科技有限公司 | A kind of shake machine detecting device and its control method of automatic detection intrinsic frequency |
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| CN101814888A (en) * | 2010-06-05 | 2010-08-25 | 福州大学 | Method for suppressing low-speed oscillation of hybrid stepper motor |
| CN101888176A (en) * | 2010-07-07 | 2010-11-17 | 杭州士兰微电子股份有限公司 | Frequency jitter circuit and frequency jitter generating method |
| CN101944849A (en) * | 2010-07-23 | 2011-01-12 | 深圳市振邦实业有限公司 | Low-EMI booster circuit and device using same |
| CN102158100A (en) * | 2011-03-01 | 2011-08-17 | 山东沃森电源设备有限公司 | Triphase variable-frequency power supply with high power and operating method thereof |
| CN103633917A (en) * | 2013-12-11 | 2014-03-12 | 陈卫兵 | Method and device for reducing vibration noise of motor |
| CN104377951A (en) * | 2014-11-12 | 2015-02-25 | 广东美的制冷设备有限公司 | Power factor correction method and device, air conditioner and electric appliance |
| CN204539033U (en) * | 2015-04-28 | 2015-08-05 | 浙江格兰菲德电子科技有限公司 | A kind of low driven by vibrating motors device structure |
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2015
- 2015-04-28 CN CN201510207124.1A patent/CN104779886A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814888A (en) * | 2010-06-05 | 2010-08-25 | 福州大学 | Method for suppressing low-speed oscillation of hybrid stepper motor |
| CN101888176A (en) * | 2010-07-07 | 2010-11-17 | 杭州士兰微电子股份有限公司 | Frequency jitter circuit and frequency jitter generating method |
| CN101944849A (en) * | 2010-07-23 | 2011-01-12 | 深圳市振邦实业有限公司 | Low-EMI booster circuit and device using same |
| CN102158100A (en) * | 2011-03-01 | 2011-08-17 | 山东沃森电源设备有限公司 | Triphase variable-frequency power supply with high power and operating method thereof |
| CN103633917A (en) * | 2013-12-11 | 2014-03-12 | 陈卫兵 | Method and device for reducing vibration noise of motor |
| CN104377951A (en) * | 2014-11-12 | 2015-02-25 | 广东美的制冷设备有限公司 | Power factor correction method and device, air conditioner and electric appliance |
| CN204539033U (en) * | 2015-04-28 | 2015-08-05 | 浙江格兰菲德电子科技有限公司 | A kind of low driven by vibrating motors device structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562357A (en) * | 2018-01-11 | 2018-09-21 | 中山天业智能装备科技有限公司 | A kind of shake machine detecting device and its control method of automatic detection intrinsic frequency |
| CN108562357B (en) * | 2018-01-11 | 2024-04-02 | 广东天之业智能装备有限公司 | Vibrating machine detection device for automatically detecting natural frequency and control method thereof |
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Application publication date: 20150715 |
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