CN1100577A - Pulse driving circuit with voltage bootstraping and energy-regenerating function - Google Patents
Pulse driving circuit with voltage bootstraping and energy-regenerating function Download PDFInfo
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- CN1100577A CN1100577A CN 93117726 CN93117726A CN1100577A CN 1100577 A CN1100577 A CN 1100577A CN 93117726 CN93117726 CN 93117726 CN 93117726 A CN93117726 A CN 93117726A CN 1100577 A CN1100577 A CN 1100577A
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Abstract
The present invention belongs to electromechanical control and is used in pulse driving source with inductive load, such as a step motor. It adopts electric energy-recovering dynamic supplying mode which changes dispersive power into useful power and reduces the input power, produces high voltage which is added to front pulse edge to realize high-voltage driving at the low-voltage supply, and uses switching circuit and pulse circuit to simplify circuit.
Description
The present invention proposes belongs to pulse driving circuit in the Electromechanical Control electronic product, is mainly used in the pulsed drive of inductive loads such as stepping motor.
In the pulsed drive to inductive loads such as stepping motors, the major technique key is: how to overcome the influence on edge, inductive load paired pulses drive current front and back, improve square characteristic frequently, improve operating frequency.Common way is to improve driving voltage, therefore have singly lowly drive, various driving powers such as single high drive and high-low pressure driving, as the patent No.: 86202716 and the patent No.: 91206837 driving powers that propose.These power supplys, because the raising of voltage, the power supply input power strengthens, and makes that power consumption is big, circuit is complicated, the high volume of cost is big, has limited the popularization and the scope of application of stepping motor.In order to overcome these shortcomings, produce new driving power again, as the patent No.: 91206837 " univoltage chopper-type driving source for step motor " and the patent No.: they are to take after driving pulse forward position electric current rises for 88105389 " efficiently driving source for step motor ", the be reduced effect of driving voltage of frequent method of turn-offing high-tension circuit, thereby saved current-limiting resistance, reduce the power consumption of resistance, but this power supply is still wanted high drive, just replaced low-voltage power supply with the high voltage source power supply, and the method for frequent switch under this high pressure conditions, circuit devcie is required high.Therefore increased the difficulty of high drive control again.The patent No.: 87104760 " energy-saving type driving source for step motor " powered with ± 7 volts of power supplys, low in energy consumption, drive circuit is simple and reliable, but it can only be operated in the low frequency state, has lost the high-frequency work function, and two 7 volts of power supplys are than the cost height of 14 volts of power supplys.How the new design philosophy that the present invention proposes promptly realizes reaching the effect of high voltage supply with the power supply of low pressure small-power; Further recuperated energy when reducing heat power consumption how.Realize both having improved the high-frequency work characteristic, reduce power consumption again, reduce volume, therefore the pulse driving circuit that voltage bootstrapping and energy regeneration function are arranged that the present invention proposes has unique novelty and obviously improves all sidedly, it is characterized in that: be in the pulse driving circuit of load with the inductance, adopt the some groups of integrating circuit of forming by diode and resistance, electric capacity, be connected across the two ends of switching circuit.When drive current turn-offed, this circuit became low-impedance freewheeling circuit, and utilized the unilateral conduction of diode, and the electric energy of inducting that the magnetic field energy of inductive load is produced is stored in the electric capacity, formed the dynamic power supplies in the circuit.Owing to utilized the self-induction of circuit, these power source voltage are risen to far above power supply voltage, by the time constant of adjustment RC and the progression of integrating circuit, make these power supplys be issued to the requirement of circuit, be applied in the dynamic process of pulsed drive voltage and capacity in certain operating frequency.Thereby realized having the effect of multiple feed with single power supply; The effect that the high-low pressure power supply is arranged with low-voltage power supply; The effect that more high-power power supply is arranged with the small-power power supply.But also make circuit simpler.So the tangible saves energy of energy, the performance that develops skill reduces cost, reduced volume.
The present invention proposes energy recuperation in pulse driving power and the essential characteristic of dynamic power is: with electric capacity 5 be connected between the collector electrode and ground of low tension switch pipe 3 after diode 4 is connected; With electric capacity 7 be connected between the collector electrode and ground of low tension switch pipe 3 after voltage-stabiliser tube 6 and diode 4 are connected; With electric capacity 9 with receive between the collector electrode and ground of low tension switch pipe 3 after resistance 8, voltage-stabiliser tube 6, diode 4 are connected; The parallel circuits of resistance 10 and diode 11, forming closed circuits with the positive pole of receiving power supply 1 after resistance 8, voltage-stabiliser tube 6, diode 4 are connected and motor winding 2, constituted the Low ESR to the induced current in winding magnetic field, jumbo integrator delay-time circuit, capacitor 5, capacitor 7 and capacitor 9 just become in the dynamic process of drive circuit provide various voltage and currents to circuit power supply (hereinafter to be referred as dynamic power supplies) as shown in drawings.When switching tube 3 turn-offed drive current, the electric energy of inducting that circuit produces magnetic field energy in the inductance absorbed among the electric capacity 5,7,9.By the effect of voltage-stabiliser tube 6, resistance 8 and the adjustment of capacity, make electric capacity 5,7,9 become that we are desirable to have the different capacity and a dynamic power supplies of voltage.On supply voltage, when operating frequency raise, the electric energy that dynamic power supplies is unnecessary returned in the drive circuit diode 11 with the voltage clamp on the electric capacity 9; Resistance 14 has the energy balance effect, when pulse frequency is low and static, for dynamic power supplies provides the startup electric energy.
The present invention proposes to replace with dynamic power supplies the method for supplying power to of conventional power supply, is directly to pick out between the positive pole of above-mentioned electric capacity 5 or 7,9 and ground, picks out after also can adding filter circuit; Can also provide direct current of voltage regulation for circuit by voltage stabilizing.This power supply directly utilizes the electric energy of recovery, has reduced the complete machine input power, also need not rectification circuit, again because of the frequency ratio civil power height of pulse current, so leaky wave electric capacity also reduces greatly.Simplify circuit, dwindled volume.
The circuit of the raising pulse front edge driving voltage that the present invention proposes.It is characterized in that: the positive pole of diode 19 is received motor windings 2, negative pole is received the collector electrode of low tension switch pipe 3, connect the positive pole of electric capacity 20 from the collector electrode of switching tube 3, the negative pole of electric capacity 20 connects the positive pole of diode 21, the negative pole of diode 21 connects the OV line, connect the positive pole of electronic switching circuit 22 to diode 19 from the intermediate connection point of electric capacity 20 and diode 21, the control utmost point connection circuit 18 from switching circuit 22 makes switching circuit 22 in the conducting of the forward position of driving pulse.Like this, just electric capacity 20 has been sealed in drive circuit, the voltage in driving pulse forward position is improved, obtained the effect of high drive in the forward position of driving pulse.
Another feature of the raising pulse front edge driving voltage that the present invention proposes is: the positive pole of receiving diode 23 from the collector electrode of low tension switch pipe, the negative pole of diode 23 connects the positive pole of electric capacity 24, electric capacity 24 negative poles meet OV, connect the top of electronic switch 25 between diode 23 and the electric capacity 24 to motor windings 2, connect the negative pole of diode 26 from the top of motor windings 2, the positive pole of diode 26 connects the positive pole of power supply 1.Like this when arrive in the driving pulse forward position, switching circuit 25 conducting that is triggered, electric capacity 24 is in parallel with power supply, because of 1 height of the power of voltage ratio on the electric capacity 24, so reached the purpose that improves the forward position driving voltage.
What the present invention proposed directly promotes and the control high voltage switch circuit with dynamic power supplies: it is characterized in that: the positive pole of diode 27 is connect the collector electrode of low tension switch pipe 3, the negative pole of diode 27 with meet OV after electric capacity 28 is connected; From connection circuit 29 is to the base stage of high switching tube 31 between electric capacity 28 and the diode 27, the emitter of injectron 31 connects the collector electrode of low tension switch pipe.Like this, when low tension switch pipe 3 turn-offs, the magnetic field energy of motor gives electric capacity 28 chargings, when back one pulse front edge arrives, low tension switch pipe 3 is open-minded, make capacitor 28 through circuit 29. 3 discharges of the emitter junction of injectron 31 and low tension switch pipe, the base stage that has formed injectron 31 promotes electric current, thereby make injectron 31 open-minded simultaneously, high pressure is sealed in drive circuit, realize the tandem drive of pulse front edge high-low pressure, after the forward position drive current rises, because of the raising of electric capacity 28 discharges and injectron 31 emitter current potentials, high pressure automatically shuts down.This circuit electric capacity 28 before low pressure is not turn-offed does not recharge, and high pressure can't not opened when low pressure is opened, and reaches the effect of interlock protection, need not other protective circuits.
The method of the usefulness dynamic power that the present invention proposes is improved the method for general high-low pressure drive circuit also can simplify promotion, control circuit greatly: it is characterized in that: the series circuit of diode 27, electric capacity 28 and between the collector electrode and ground of low tension switch pipe 3, receive the collector electrode of low tension switch pipe after elementary series connection of the indirect dynamic power supplies output circuit 29 of electric capacity 28 and diode 27 and pulse transformer.When turn-offing, low pressure give electric capacity 28 chargings like this, in the forward position that low pressure is opened, electric capacity 28 is through the elementary of circuit 29, pulse transformer and 3 discharges of low tension switch pipe, form and promote electric current, and close by the pulse transformer mat and to trigger injectron 31, realize promoting, the purpose of control high voltage switch circuit.
The present invention is in order to solve automatic raising frequency frequency down circuit complexity in the pulsed drive technology, big and the rough problem of frequency conversion of volume, also adopt the control method of dynamic power supplies, it is characterized in that: after tall series connection of rectification with capacitor 42 and diode 43,44,45,46 compositions, and the two ends of receiving oscillating capacitance 41 in the impulse circuit, dc output end rectification Qiao connects electric capacity 47, and is in parallel with electric capacity 47 after resistance 48 is connected with controllable electronic switch 49, as the circuit of control capacitance 47 discharges.Like this in the process of impulse circuit vibration, if electronic switch 49 open circuits, capacitor 47 constantly charges, voltage between two-plate constantly raises, and impulse circuit constantly reduces for the charge volume of electric capacity 47 by electric capacity 42, just is equivalent to electric capacity 47 and constantly diminishes with 42 the capacity of connecting, so pulse frequency constantly raises, when the voltage on electric capacity 47 equaled the amplitude of pulse, the frequency stabilization of the pulse power was got off, and finished the process of automatic raising frequency.When electric capacity 47 discharges were given in the electronic switch conducting, then pulse frequency constantly reduced again.Realize automatic frequency reducing, like this, open when our control switch circuit 49 and to make electric capacity 47 discharge that pulse frequency reduces automatically; When the control switch circuit turn-offs, make electric capacity 47 stop discharge, pulse frequency raises automatically.This automatic lifting clock frequently, circuit is simple, and control is convenient, and lifting frequency is level and smooth, the requirement that positive coincidence pulse drives.
Therefore the pulse driving circuit that voltage bootstrapping and energy regeneration function are arranged that the present invention proposes, belong to the Electromechanical Control field, in the pulse driving power that is applied to inductive loads such as stepping motor, because it has taked recovery electric energy and dynamic power mode, make dissipation power become available power, save electric energy, reduced input power; The high pressure that utilizes circuit to produce is added to the forward position of driving pulse, has realized that low-voltage power supply has the effect of high voltage drive; Adopted dynamic power supplies promotion, control switch circuit and impulse circuit, made circuit simple and reliable.Therefore adopt the present invention that the characteristics of more obvious raising performance, reduction power consumption, minimizing cost, reduced volume are arranged, application value is arranged.
Claims (8)
1, claim: the pulse driving circuit that voltage bootstrapping and energy regeneration function are arranged that the present invention proposes has unique novelty and obviously improves all sidedly, it is characterized in that: be in the pulse driving circuit of load with the inductance, adopt the some groups of integrating circuit of forming by diode and resistance, electric capacity, be connected across the two ends of switching circuit.When drive current turn-offed, this circuit became low-impedance freewheeling circuit, and utilized the unilateral conduction of diode, and the electric energy of inducting that the magnetic field energy of inductive load is produced is stored in the electric capacity, formed the dynamic power supplies in the circuit.Owing to utilized the self-induction of circuit, these power source voltage are risen to far above power supply voltage, by the time constant of adjustment RC and the progression of integrating circuit, make these power supplys be issued to the requirement of circuit, be applied in the dynamic process of pulsed drive voltage and capacity in certain operating frequency.
2, according to claim 1. in pulse driving power energy recuperation and the essential characteristic of dynamic power be: with electric capacity 5 be connected between the collector electrode and ground of low tension switch pipe 3 after diode 4 is connected; With electric capacity 7 be connected between the collector electrode and ground of low tension switch pipe 3 after voltage-stabiliser tube 6 and diode 4 are connected; With electric capacity 9 with receive between the collector electrode and ground of low tension switch pipe 3 after resistance 8, voltage-stabiliser tube 6, diode 4 are connected: the parallel circuits of resistance 10 and diode 11, forming closed circuits, having constituted the Low ESR to the induced current in winding magnetic field, jumbo integrator delay-time circuit with the positive pole of receiving power supply 1 after resistance 8, voltage-stabiliser tube 6, diode 4 are connected and motor winding 2. capacitor 5, capacitor 7 and capacitor 9 just become the power supply (hereinafter to be referred as dynamic power supplies) that various voltage and currents are provided to circuit in the dynamic process of drive circuit
3, replacing the method for supplying power to of conventional power supply according to claim 1. with dynamic power supplies, is directly to pick out between the positive pole of above-mentioned electric capacity 5 or 7,9 and ground, picks out after also can adding filter circuit; Can also provide direct current of voltage regulation for circuit by voltage stabilizing.
4, improve the circuit of pulse front edge driving voltage according to claim 1..It is characterized in that: the positive pole of diode 19 is received motor windings 2, negative pole is received the collector electrode of low tension switch pipe 3, connect the positive pole of electric capacity 20 from the collector electrode of switching tube 3, the negative pole of electric capacity 20 connects the positive pole of diode 21, the negative pole of diode 21 connects the OV line, connect the positive pole of electronic switching circuit 22 to diode 19 from the intermediate connection point of electric capacity 20 and diode 21, the control utmost point connection circuit 18 from switching circuit 22 makes switching circuit 22 in the conducting of the forward position of driving pulse.
5, the another feature according to the raising pulse front edge driving voltage of claim 1. is: the positive pole of receiving diode 23 from the collector electrode of low tension switch pipe, the negative pole of diode 23 connects the positive pole of electric capacity 24, electric capacity 24 negative poles meet OV, connect the top of electronic switch 25 between diode 23 and the electric capacity 24 to motor windings 2, connect the negative pole of diode 26 from the top of motor windings 2, the positive pole of diode 26 connects the positive pole of power supply 1.
6, directly promoting and the control high voltage switch circuit according to claim 1.: it is characterized in that with dynamic power supplies: the positive pole of diode 27 is connect the collector electrode of low tension switch pipe 3, the negative pole of diode 27 with meet OV after electric capacity 28 is connected; From connection circuit 29 is to the base stage of high switching tube 31 between electric capacity 28 and the diode 27, the emitter of injectron 31 connects the collector electrode of low tension switch pipe.
7, the method for improving general high-low pressure drive circuit with the method for dynamic power according to claim 1. also can be simplified promotion, control circuit greatly: it is characterized in that: the series circuit of diode 27, electric capacity 28 and between the collector electrode and ground of low tension switch pipe 3, receive the collector electrode of low tension switch pipe after elementary series connection of the indirect dynamic power supplies output circuit 29 of electric capacity 28 and diode 27 and pulse transformer.
8, solve automatic raising frequency frequency down circuit complexity in the pulsed drive technology according to claim 1., big and the rough problem of frequency conversion of volume, also adopt the control method of dynamic power supplies, it is characterized in that: after tall series connection of rectification with capacitor 42 and diode 43,44,45,46 compositions, and the two ends of receiving oscillating capacitance 41 in the impulse circuit, dc output end rectification Qiao connects electric capacity 47, it is back in parallel with electric capacity 47 that resistance 48 is connected with controllable electronic switch 49, as the circuit of control capacitance 47 discharges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93117726 CN1100577A (en) | 1993-09-18 | 1993-09-18 | Pulse driving circuit with voltage bootstraping and energy-regenerating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93117726 CN1100577A (en) | 1993-09-18 | 1993-09-18 | Pulse driving circuit with voltage bootstraping and energy-regenerating function |
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| Publication Number | Publication Date |
|---|---|
| CN1100577A true CN1100577A (en) | 1995-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 93117726 Pending CN1100577A (en) | 1993-09-18 | 1993-09-18 | Pulse driving circuit with voltage bootstraping and energy-regenerating function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181229A (en) * | 2020-03-19 | 2020-05-19 | 华中科技大学 | Flat-top magnetic field generating device and method |
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1993
- 1993-09-18 CN CN 93117726 patent/CN1100577A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111181229A (en) * | 2020-03-19 | 2020-05-19 | 华中科技大学 | Flat-top magnetic field generating device and method |
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