CN2208294Y - Pulse driving part of step motor - Google Patents
Pulse driving part of step motor Download PDFInfo
- Publication number
- CN2208294Y CN2208294Y CN 94214996 CN94214996U CN2208294Y CN 2208294 Y CN2208294 Y CN 2208294Y CN 94214996 CN94214996 CN 94214996 CN 94214996 U CN94214996 U CN 94214996U CN 2208294 Y CN2208294 Y CN 2208294Y
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- CN
- China
- Prior art keywords
- circuit
- pulse
- driving
- energy output
- power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Stepping Motors (AREA)
Abstract
The utility model relates to a pulse driving device of a step motor, which comprises a pulse control distributing circuit, a pulse current amplification circuit, a drive current switching circuit and a power supply E. The utility model is characterized in that the pulse driving device of the step motor comprises an energy absorption and dynamic power supply circuit P. The utility model which is a new control device has the advantages of wide application, low cost, simple structure and easy fabrication.
Description
The utility model is a kind of stepping motor pulse driving device.Refer in particular to the driving source for step motor device of small size, low-power consumption, high workload frequency.Belong to the power supply field.
In the pulsed drive to inductive loads such as stepping motors, the major technique key is: how to overcome the influence in inductive load paired pulses drive current forward position, improve square characteristic frequently, improve running frequency and work moment.Usual way is to improve driving voltage, strengthens input power, therefore develops into various driving powers such as single high drive, high-low pressure driving from single low-voltage driving, the driving power that is proposed as Chinese patent CN86202716 and CN86202585.These power supplys are because the raising of voltage, the increasing of input power, power supply power consumption is increased, efficient is low, the circuit complexity, the cost height, volume is big, limited applying of stepping motor, at these shortcomings, produced new driving power again, they are to take after rising on the driving pulse forward position as Chinese patent CN91206837 " univoltage chopper-type driving source for step motor " and CN88105389 " efficiently driving source for step motor ", the method of frequent switch high-pressure circuit, reach the effect that reduces driving voltage, thereby saved current-limiting resistance, reduced ohmically power consumption, but this power supply still requires high drive, just without low-tension supply, and the method for this frequent switch high-pressure circuit, circuit devcie is required high, also increased the difficulty of control circuit; Chinese patent, CN87104760 " energy-saving type driving source for step motor " powers with+7 volts and-7 volts of two power supplys, and is low in energy consumption, drive circuit is simple and reliable, but it loses the function of high-frequency work again.In existing technology, can not improve simultaneously in performance, power consumption, volume, cost each side in a word step motor drive.
The purpose of this utility model is to improve the technical indicator of pulse driving power comprehensively, realizes reaching the more effect of high voltage supply with low-voltage power supply; Reach the effect of more high-power power supply with small-power power supply, and make circuit more simple and reliable, reach the performance that both develops skill, again saves energy, the purpose that reduces power consumption, reduced volume, reduce cost.
" a kind of stepping motor pulse driving device " the available following embodiment that the utility model proposes illustrates that a three-phase stepper motor driver comprises pulse distribution control circuit (A); Pulse current amplifying circuit (B); Pulsed drive current switching circuit (T); Energy absorption and dynamic power circuit (P); Power supply (E).The purpose of this utility model mainly realizes by energy absorption and dynamic power circuit (P), its essential characteristic is: the circuit of connecting and being formed with diode (D) and capacitor (C), be connected across on the line between drive current switch circuit and the inductive load, make this series circuit and load inductance and switching circuit all become relation in parallel, pick out electric energy output and control circuit from the middle connecting line of diode in series (D) electric capacity electricity (C) again.Because of this circuit carries out energy recuperation in the dynamic process of pulsed drive, and through output and control circuit again in the process of pulsed drive for drive circuit provides electric energy, played the effect of dynamic power, become a dynamic power power supply.
Figure one is an embodiment of the present utility model, because each phase drive circuit is symmetrical fully, the wherein drive circuit of a phase has only drawn among the figure, wherein the PYF001 thick film circuit produced of the DG0250 ring distributor produced by Beijing 799 factories of the circuit in the block diagram (A) and Shenzhen parent peak company is formed, send three-phase pulse by it and deliver to circuit (B), block diagram (B) circuit is driving pulse to be carried out electric current amplify, the utility model is to adopt a small-power NPN triode (as 3DG6) and a middle power NPN triode (as 3DK4) to be connected into the current amplification circuit of emitter following mode, and the drive current of driving pulse is amplified to is enough to promote next stage pulse-switching circuit (T
1), circuit (T
1) be the high power switch triode (3DD15 or 2SD921) of a NPN type.(circuit (A) is (T (B)
1) schematic diagram shown in figure two).(L) be a phase winding of stepping motor.(E
1) be DC power supply, it also is the general supply of drive unit, general all by obtaining behind the civil power process transformation rectifying and voltage-stabilizing, the size of its capacity, the height of voltage is all determined by the characteristic of the requirement of motor and power supply, circuit (P) in the frame of broken lines is a peculiar circuit of the present utility model, its external connection (1) is the energy absorption incoming line, and the absorption of its energy is the series circuit of forming with diode and capacitor, as the C among the figure
1With D
2, D
3With C
2, D
4With C
3, D
4R
2With C
4The various series circuits of forming, they all are the switching circuit T that is connected across in the pulse driving circuit of inductive load
1And on the line between the load inductance L, with circuit T
1Become relation in parallel with load L, like this when pulsed drive current is turned off, magnetic field energy in the inductance transfers induced current to and charges to capacitor, because the unilateral conduction of diode, energy is stored in the capacitor, we draw electric energy output line (2) (3) (4) (7) from the positive pole of capacitor just can be to circuit supply, by adjusting the size and the resistance R of electric capacity
2Resistance, can adjust the voltage and the power supply intensity of power supply, the electric energy of high voltage can be provided by (2) (3) among the figure; (4) Shu Chu voltage is because R
2Step-down and D
5To E
1Clamp makes voltage a little more than E
1, can be used to promoting level and circuit supplies such as dc fan, indicator light; What contact (5) was exported is the direct current of process voltage stabilizing, and it is to meet three-terminal regulator block (IC) and filter capacitor C by contact (4)
5After, obtaining supplying with the D.C. regulated power supply of front stage circuits from contact (5), the IC in the utility model adopts 7800 series (as 7809); Contact (6) is by diode (D
5) and resistance (R
3) dump energy of dynamic power supplies is returned main power source.Contact (7) is the power supply output point that higher drive is provided for the driving pulse forward position, among the figure by (C
1) (D
1) (D
2) (R) (T
2) circuit formed is one of embodiment that improves the pulse front edge driving voltage.Its operation principle is, when pulse front edge arrives, because T
1Conducting, make C
1Pass through T
1, R
1And T
2The emitter junction discharge has formed T
2Base current, impel T
2Conducting is again because T
2Conducting make C
1With D
1Parallel connection, C
1Pass through T
1E
1L and T
2Discharge reaches C
1Seal in main the driving in the loop, and C
1On voltage and E
1On electric potential direction identical, make the driving voltage in forward position equal two voltage sums, thereby realize to improve the purpose of driving voltage.The concrete connection of this circuit is: at motor winding (L) and switching tube (T
1) seal in diode (D between the collector electrode (C)
1), make (D
1) positive pole meet (L), negative pole meets (T
1) collector electrode, at D
1With (T
1) meet capacitor C between the collector electrode
1Positive pole, C
1Negative pole meet diode (D
2) positive pole, (D
2) negative pole meet (T
1) emitter (e), at D
2With C
1Intermediate connection point meets switching tube (T
2) emitter (e), (T
2) the current collection collection meet D
1Positive pole, T
2Base stage through resistance (R
1) receive (T
1) emitter.
The utility model has absorbed the induced current in the drive circuit well owing to adopted above circuit, has improved impulse waveform, has improved the square frequency characteristic; Magnetic field energy is changed into the dynamic power electric energy, reduce power consumption, improved efficient, and with the method that automatically promotes the driving voltage of pulse front edge, supply voltage can be reduced greatly, and circuit is simple and reliable, so the utility model has reached the purpose of comprehensive raising driving source for step motor technical indicator.With a three-phase three peace stepper motor drivers is example, implement to make power consumption drop to 50VA after the art of this patent by 118VA, supply voltage drops to 15V by 27V, and the operating frequency of motor is by 2000HZ, bring up to 8000HZ(and also exceed 5000HZ) than the operating frequency of motor self nominal, volume-diminished to two 1/10th, make the driving control device of stepping motor and the same can being installed on the interior any orientation of complete machine of control switch of common AC/DC motor, therefore be generation step motor drive controller, the value that is widely used and the fine market competitiveness.
Claims (8)
1, a kind of stepping motor pulse driving device comprises pulse Control Allocation circuit (A), pulse current amplifying circuit (B), drive current switch circuit (T
1), power supply E
1, it is characterized in that: described this supply unit has an energy absorption and dynamic power circuit (P), and the circuit that it is made up of diode and capacitances in series is connected across drive current switch circuit T
1And on the line between the load inductance, with circuit (T
1) all become relation in parallel with load L.
2, device according to claim 1, it is characterized in that: be connected to the electric energy output circuit on the middle circuit that links to each other of series capacitors and diode, purchase into one three circuit that end is external: an energy sucks circuit, an earthed circuit, an electric energy output control circuit.
3, device according to claim 1 is characterized in that: an energy absorption incoming line (1) and an earth connection (8) are arranged in described (P) circuit, connect energy output line (2) (3) (4) (5) (6) (7) in addition.
4, device according to claim 2 is characterized in that: its energy output control circuit be one by three-terminal regulator block (IC) and filter capacitor C
5The voltage-stabilizing output circuit of forming.
5, device according to claim 2 is characterized in that its electric energy output circuit is the switching circuit that is subjected to driving pulse control, by switching tube (T
2) and resistance R
1Form.
6, device according to claim 1 is characterized in that described pulse Control Allocation circuit (A) is made up of thick vlsi die PYF001 and the external resistance of integrated circuit DG0250 and an electric capacity.
7, device according to claim 1 is characterized in that: described current amplification circuit is a current amplification circuit that is connected into emitter output circuit by two NPN type triodes.
8, device according to claim 1 is characterized in that described (T
1) circuit is a NPN type large power triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94214996 CN2208294Y (en) | 1993-09-18 | 1994-06-17 | Pulse driving part of step motor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93224479 | 1993-09-18 | ||
| CN93224479.3 | 1993-09-18 | ||
| CN 94214996 CN2208294Y (en) | 1993-09-18 | 1994-06-17 | Pulse driving part of step motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2208294Y true CN2208294Y (en) | 1995-09-20 |
Family
ID=34065379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94214996 Expired - Fee Related CN2208294Y (en) | 1993-09-18 | 1994-06-17 | Pulse driving part of step motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2208294Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410955A (en) * | 2019-07-22 | 2019-11-05 | 广东美的制冷设备有限公司 | Control method, device, air conditioner and the storage medium of stepper motor |
-
1994
- 1994-06-17 CN CN 94214996 patent/CN2208294Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410955A (en) * | 2019-07-22 | 2019-11-05 | 广东美的制冷设备有限公司 | Control method, device, air conditioner and the storage medium of stepper motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |