CN104963972A - Exciting controller of electromagnetic brake - Google Patents
Exciting controller of electromagnetic brake Download PDFInfo
- Publication number
- CN104963972A CN104963972A CN201510383586.9A CN201510383586A CN104963972A CN 104963972 A CN104963972 A CN 104963972A CN 201510383586 A CN201510383586 A CN 201510383586A CN 104963972 A CN104963972 A CN 104963972A
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- diode
- rectifier bridge
- field effect
- effect transistor
- electromagnetic brake
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Abstract
The invention discloses an exciting controller of an electromagnetic brake. The exciting controller comprises an inductive load (L1). One end of the inductive load (L1) is connected with a rectifier bridge (B1). One input end of the rectifier bridge (B1) is connected with a second diode (D2). The positive electrode end of the second diode (D2) is connected with an alternating current power source. The other end of the inductive load (L1) is connected with a field effect transistor (Q2). The connecting end is the end of a drain electrode (D) of the field effect transistor (Q2). The end of a source electrode (S) of the field effect transistor (Q2) is connected with an output negative electrode (DC-) of the rectifier bridge (B1). The end of a grid electrode (G) of the field effect transistor (Q2) is connected with a control chip. The other input end of the rectifier bridge (B1) is connected with the second input end (AC2) of the alternating current power source. The two ends of the second diode (D2) are connected with a switching triode (Q1) in parallel. The two ends of the inductive load (L1) are connected with a follow current circuit in parallel. The exciting controller has the advantages that energy consumption is small and the instant residual magnetism can be effectively released.
Description
Technical field
the present invention relates to a kind of electromagnetic brake, particularly a kind of excitation controller of electromagnetic brake.
Background technique
actuator is the Important Components part controlling electromagnetic brake opening and closing, in the prior art, generally all one way rectifier state can not be formed in divider chain, the voltage of ac power supply is after rectifier rectification, the voltage that electromagnetic brake obtains is general all higher, power is general all larger, and energy consumption is larger.Simultaneously, generally all freewheeling circuit is not had in divider chain, larger at the moment remanent magnetism of the unexpected power-off of electromagnetic brake, this larger remanent magnetism can not get effective release, huge induction counterelectromotive force can be produced, this huge induction counterelectromotive force can smash less device withstand voltage in circuit, thus damages circuit.Therefore, there is power consumption and can not get the problem of effectively release with moment remanent magnetism comparatively greatly in the excitation controller of current electromagnetic brake.
Summary of the invention
the object of the invention is to, provide a kind of excitation controller of electromagnetic brake, it has, and power consumption is less can obtain effective feature discharged with moment remanent magnetism.
technological scheme of the present invention: a kind of excitation controller of electromagnetic brake, comprise inductive load, inductive load one end is connected with rectifier bridge, connecting end is the output cathode end of rectifier bridge, an input end of rectifier bridge is connected with the second diode, connecting end is the negative pole end of the second diode, and the positive terminal of the second diode is connected with ac power supply, and connecting end is the first input end of ac power supply; The inductive load the other end is connected with field effect transistor, and connecting end is the drain electrode end of field effect transistor, and the source terminal of field effect transistor is connected with the output negative pole of rectifier bridge, and the gate terminal of field effect transistor is connected with control chip, and connecting end is the first control end of control chip; Another input end of rectifier bridge is connected with the second input end of ac power supply; Described second diode two ends are connected in parallel to switch triode; Described inductive load two ends are connected in parallel to freewheeling circuit.
in the excitation controller of above-mentioned a kind of electromagnetic brake, the emitter of described switch triode, collector electrode, base stage are connected with the positive terminal of the second diode, the negative pole end of the second diode, the second control end of control chip respectively.
in the excitation controller of aforesaid a kind of electromagnetic brake, described freewheeling circuit comprises resistance, resistance one end is connected with the output cathode end of rectifier bridge, the other end of resistance is connected with the first diode, connecting end is the negative pole end of the first diode, and the positive terminal of the first diode is connected with the drain electrode end of field effect transistor.
compared with prior art, the present invention has power consumption less and moment remanent magnetism and can obtain the feature of effectively release.The present invention is used in ac power supply first input end and the mode of a diode of connecting between rectifier bridge, reaches energy-conservation effect; The a period of time started, switch triode is in closed state, and alternating current (a.c.) is without diode, directly through rectifier bridge rectification, electromagnetic brake is made to obtain larger power, after a period of time, under the control of control chip, switch triode disconnects, at this moment electric current is first through diode, then by rectifier bridge rectification, forms a kind of state of one way rectifier, make the power reduction on electromagnetic brake, reach energy-conservation effect.Meanwhile, the present invention, by being arranged in parallel the mode of freewheeling circuit at inductive load two ends, ensures that the moment remanent magnetism of electromagnetic brake can effectively be discharged, and ensures the safety of withstand voltage less components and parts in circuit, holding circuit intact; Wherein freewheeling circuit is that resistance and a Diode series are formed, and the resistance size of resistance, according to requiring in reality that the release speed of remanent magnetism is determined, to satisfy the demand, ensures that the safety of each components and parts in circuit is as the criterion.
Accompanying drawing explanation
fig. 1 is electrical block diagram of the present invention.
being labeled as in accompanying drawing: L1-inductive load, B1-rectifier bridge, the output cathode of DC+-rectifier bridge, D2-second diode, the first input end of AC1-ac power supply, Q2-field effect transistor, the source electrode of S-field effect transistor, the drain electrode of D-field effect transistor, the output negative pole of DC--rectifier bridge, the grid of G-field effect transistor, the second input end of AC2-ac power supply, Q1-switch triode, the emitter of E-switch triode, the collector electrode of C-switch triode, the base stage of B-switch triode, R1-resistance, D1-first diode.
Embodiment
below in conjunction with drawings and Examples, the present invention is further illustrated, but not as the foundation limited the present invention.
embodiment.A kind of excitation controller of electromagnetic brake, form as shown in Figure 1, comprise inductive load L1, inductive load L1 one end is connected with rectifier bridge B1, connecting end is that the output cathode DC+ of rectifier bridge B1 holds, and an input end of rectifier bridge B1 is connected with the second diode D2, and connecting end is the negative pole end of the second diode D2, the positive terminal of the second diode D2 is connected with ac power supply, and connecting end is the first input end AC1 of ac power supply; The inductive load L1 the other end is connected with field effect transistor Q2, connecting end is the drain D end of field effect transistor Q2, the source S end of field effect transistor Q2 is connected with the output negative pole DC-of rectifier bridge B1, and the grid G end of field effect transistor Q2 is connected with control chip, and connecting end is the first control end of control chip; Another input end of rectifier bridge B1 is connected with the second input end AC2 of ac power supply; Described second diode D2 two ends are connected in parallel to switch triode Q1; Described inductive load L1 two ends are connected in parallel to freewheeling circuit.
the emitter E of described switch triode Q1, collector electrode C, base stage B are connected with the positive terminal of the second diode D2, the negative pole end of the second diode D2, the second control end of control chip respectively.Described freewheeling circuit comprises resistance R1, resistance R1 one end is held with the output cathode DC+ of rectifier bridge B1 and is connected, the other end of resistance R1 is connected with the first diode D1, and connecting end is the negative pole end of the first diode D1, and the positive terminal of the first diode D1 is connected with the drain D end of field effect transistor Q2.In Fig. 1, resistance R3, R4 are the stable of voltage in maintenance control chip output circuit; Resistance R2 is the stable of maintaining field effect tube voltage.
working principle of the present invention: connecting a period of time of ac power supply, control chip control switch triode Q1 is in closed state, and alternating current (a.c.), directly through rectifier bridge B1 rectification, makes electromagnetic brake with larger power work; After a period of time, control chip control switch triode Q1 disconnects, and at this moment alternating current (a.c.) is first through the second diode D2, again through rectifier bridge B1 rectification, make in circuit, to form a kind of one way rectifier state, make electromagnetic brake with less power work, reach energy-conservation effect.In the moment of electromagnetic brake power-off, control chip directly turns off field effect transistor Q2, larger remanent magnetism on electromagnetic brake is discharged by freewheeling circuit, ensure that the counterelectromotive force acted on withstand voltage less components and parts produced by remanent magnetism can not exceed the tolerance range of little components and parts, can not smash components and parts, the speed of wherein remanent magnetism release can be controlled by resistance R1 resistance in freewheeling circuit.
concrete working procedure can be: when ac power supply input voltage is AC220V, in 2S after powered up, on state is in by control chip control switch triode Q1, alternating current (a.c.) is without the second diode D2, directly through rectifier bridge B1 rectification, alternating voltage AC220V is rectified into VDC DC198V, and the voltage that at this moment electromagnetic brake obtains DC198V is opened; After 2S, control chip control switch triode Q1 disconnects, Ac is first by the second diode D2, again through rectifier bridge B1 rectification, form a kind of one way rectifier state, be that VDC is reduced to DC99V and acted on electromagnetic brake by alternating voltage AC220V rectification, the power of electromagnetic brake becomes 1/4th of rated power, reaches energy-conservation effect.In the moment of electromagnetic brake power-off, control chip directly turns off field effect transistor Q2, larger remanent magnetism on electromagnetic brake is discharged by freewheeling circuit, wherein freewheeling circuit has resistance R1 and the first diode D1 in series, can ensure that the counterelectromotive force acted on withstand voltage less components and parts produced by remanent magnetism can not exceed the tolerance range of little components and parts, can not smash components and parts, holding circuit well runs, also make actuator safer, longer service life.The speed that wherein size of resistance R1 resistance can discharge remanent magnetism is according to actual needs selected.
Claims (3)
1. the excitation controller of an electromagnetic brake, it is characterized in that: comprise inductive load (L1), inductive load (L1) one end is connected with rectifier bridge (B1), connecting end is output cathode (DC+) end of rectifier bridge (B1), an input end of rectifier bridge (B1) is connected with the second diode (D2), connecting end is the negative pole end of the second diode (D2), and the positive terminal of the second diode (D2) is connected with ac power supply, and connecting end is the first input end (AC1) of ac power supply; Inductive load (L1) the other end is connected with field effect transistor (Q2), connecting end is drain electrode (D) end of field effect transistor (Q2), source electrode (S) end of field effect transistor (Q2) is connected with the output negative pole (DC-) of rectifier bridge (B1), grid (G) end of field effect transistor (Q2) is connected with control chip, and connecting end is the first control end of control chip; Another input end of rectifier bridge (B1) is connected with second input end (AC2) of ac power supply; Described second diode (D2) two ends are connected in parallel to switch triode (Q1); Described inductive load (L1) two ends are connected in parallel to freewheeling circuit.
2. the excitation controller of a kind of electromagnetic brake according to claim 1, is characterized in that: the emitter (E) of described switch triode (Q1), collector electrode (C), base stage (B) are connected with the positive terminal of the second diode (D2), the negative pole end of the second diode (D2), the second control end of control chip respectively.
3. the excitation controller of a kind of electromagnetic brake according to claim 1, it is characterized in that: described freewheeling circuit comprises resistance (R1), resistance (R1) one end is held with the output cathode (DC+) of rectifier bridge (B1) and is connected, the other end of resistance (R1) is connected with the first diode (D1), connecting end is the negative pole end of the first diode (D1), and the positive terminal of the first diode (D1) is held with the drain electrode (D) of field effect transistor (Q2) and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383586.9A CN104963972A (en) | 2015-06-30 | 2015-06-30 | Exciting controller of electromagnetic brake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383586.9A CN104963972A (en) | 2015-06-30 | 2015-06-30 | Exciting controller of electromagnetic brake |
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| CN104963972A true CN104963972A (en) | 2015-10-07 |
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| CN201510383586.9A Pending CN104963972A (en) | 2015-06-30 | 2015-06-30 | Exciting controller of electromagnetic brake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141192A (en) * | 2015-10-14 | 2015-12-09 | 昆山航天林泉电机有限公司 | Disc brake braking circuit capable of eliminating power loss residual magnetism time delay |
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| CN101093961A (en) * | 2006-06-22 | 2007-12-26 | 台达电子工业股份有限公司 | Resonance converter, and voltage stabilizing method for implementing light loading and idling load |
| CN101844715A (en) * | 2010-06-11 | 2010-09-29 | 日立电梯（中国）有限公司 | Novel elevator brake control system |
| CN203057003U (en) * | 2012-12-27 | 2013-07-10 | 浙江西子富沃德电机有限公司 | Actuator of electromagnetic brake |
| CN203166789U (en) * | 2013-01-25 | 2013-08-28 | 深圳市共进电子股份有限公司 | Switch power-supply circuit having half-wave and full-wave automatic switching function |
| CN204784342U (en) * | 2015-06-30 | 2015-11-18 | 浙江玛拓驱动设备有限公司 | Excitation controller of electromagnetic braking ware |
-
2015
- 2015-06-30 CN CN201510383586.9A patent/CN104963972A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093961A (en) * | 2006-06-22 | 2007-12-26 | 台达电子工业股份有限公司 | Resonance converter, and voltage stabilizing method for implementing light loading and idling load |
| CN101844715A (en) * | 2010-06-11 | 2010-09-29 | 日立电梯（中国）有限公司 | Novel elevator brake control system |
| CN203057003U (en) * | 2012-12-27 | 2013-07-10 | 浙江西子富沃德电机有限公司 | Actuator of electromagnetic brake |
| CN203166789U (en) * | 2013-01-25 | 2013-08-28 | 深圳市共进电子股份有限公司 | Switch power-supply circuit having half-wave and full-wave automatic switching function |
| CN204784342U (en) * | 2015-06-30 | 2015-11-18 | 浙江玛拓驱动设备有限公司 | Excitation controller of electromagnetic braking ware |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141192A (en) * | 2015-10-14 | 2015-12-09 | 昆山航天林泉电机有限公司 | Disc brake braking circuit capable of eliminating power loss residual magnetism time delay |
| CN105141192B (en) * | 2015-10-14 | 2018-06-01 | 苏州航天林泉电机有限公司 | The Disk Brake circuit of dead electricity remanent magnetism delay can be eliminated |
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