CN105094188A - Voltage detection and compensation device - Google Patents
Voltage detection and compensation device Download PDFInfo
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- CN105094188A CN105094188A CN201410222186.5A CN201410222186A CN105094188A CN 105094188 A CN105094188 A CN 105094188A CN 201410222186 A CN201410222186 A CN 201410222186A CN 105094188 A CN105094188 A CN 105094188A
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Abstract
The invention provides a voltage detection and compensation device. A feedback detection module transmits comparison values to a control unit and the comparison values are compared with parallel parameter values; when the comparison values are less than or greater than the corresponding parameter values, the control unit uses a feedback means to timely adjust and correct the ratio of the comparison values to the parameter values to 1, notifies a driving module of the correction result and compensates for the practical voltage values via an output module. Thus, it is guaranteed that voltage supplied to loads by a power source is stable, the phenomenon that loads have to stop working because of voltage dip is avoided and the damage to loads is prevented.
Description
Technical field
The present invention relates to a kind of detecting voltage compensation system, espespecially a kind of can to the detecting voltage compensation system of virtual voltage towards operating voltage correction-compensation.
Background technology
General electrical equipment all has operating voltage, if the spread of voltage that power supply provides, then electrical equipment can be caused cannot to work because of undertension.For avoiding this situation to occur, protection circuit, such as voltage dip protector, UPS or frequency converter can be applied when powering.But; this type of protection circuit because of output load be inductance (electromagnetic contactor or transformer) or capacity load (such as programmable logic controller (PLC) or power supply unit); thus output voltage can be caused to stablize; all have the voltage step of certain limit; cause load life to reduce, the situation of precision misalignment and damage even can be caused because of the impact of undertension to occur.
Summary of the invention
The object of the invention is to solve the problem and a kind of detecting voltage compensation system is provided, can, when virtual voltage is below or above operating voltage, making by compensating this virtual voltage towards operating voltage correction, allowing the effect that virtual voltage reaches stable really by this.
In order to achieve the above object, present invention employs following technical scheme:
A kind of detecting voltage compensation system, it is characterized in that: it comprises the closed-loop system be sequentially connected in series by control module, driving module, output module and back coupling detecting module, this output module and power supply, load are electrically connected, and this back coupling detecting module comprises the signal converting circuit providing analogy/digital signal translation function;
This control module stores a data information, and this data information is the operational voltage value of the work period available a succession of change in pulse width modulation signal according to the operating voltage of load; The work period of the virtual voltage that this back coupling detecting module exports according to power supply can obtain the actual voltage value of a succession of change in pulse width modulation signal; Be the parameter value of digital signal by the operational voltage value corresponding conversion of this signal converting circuit to change a succession of in this data information, and be the comparison value of digital signal to the actual voltage value corresponding conversion of this succession of change;
This back coupling detecting module transmits this comparison value to this control module and parallel parameter value comparison, and during the parameter value of this comparison value below or above correspondence, the ratio adjusting this comparison value and this parameter value in time with back coupling means by this control module is revised towards 1, and notifies this driving module with this correction result and compensate this actual voltage value through this output module.
Described back coupling means are that ratio controls.
Described back coupling detecting module comprises bleeder circuit and filtering circuit, and this bleeder circuit, filtering circuit are respectively to described virtual voltage dividing potential drop, filtering.
Advantage of the present invention is:
The present invention can carry out detecting and compensating movement when power supply provides loaded work piece voltage, and the actual voltage value making power supply provide conforms to the operational voltage value of load, guarantee that power supply provides the voltage stabilization of load, load must can not be decommissioned because of voltage dip, and the measure of precision of running can be maintained because of voltage stabilization, and can guarantee that load can not have the situation of damage to occur.
Accompanying drawing explanation
Fig. 1 is the block schematic diagram of detecting voltage compensation system of the present invention.
Fig. 2 is the circuit diagram detecting module of feedbacking of the present invention.
Embodiment
Refer to Fig. 1 to Fig. 2, the example structure shown in figure selected by the present invention, this is only for explanation, not by the restriction of this kind of structure.
Present embodiments provide a kind of detecting voltage compensation system, when it detects the operating voltage of virtual voltage below or above load that power supply exports, this virtual voltage is compensated towards this operating voltage correction, this detecting voltage compensation system as shown in Figure 1, comprise the closed-loop system be sequentially connected in series by control module 1, driving module 2, output module 3 and back coupling detecting module 4, this output module 3 is electrically connected with power supply, load, and this back coupling detecting module 4 comprises the signal converting circuit providing analogy/digital signal translation function.
As shown in Figure 2, this back coupling is detectd side form group 4 and is comprised bleeder circuit 5 and filtering circuit 6, this bleeder circuit 5 (being RF2, RF3 in figure) carries out dividing potential drop to this virtual voltage, and this filtering circuit 6 (being RF, CF2, CF3 in figure) carries out filtering to this virtual voltage, this virtual voltage, after dividing potential drop and filtering, realizes the detecting being detected module 4 by this back coupling.
Be provided with a Transformer Rectifier Unit 7 in the present embodiment, this Transformer Rectifier Unit 7 respectively with this control module 1, drive module 2 and export module 3 and be electrically connected, this Transformer Rectifier Unit 7 is after input ac power, exporting 5V power supply via transformation for this control module 1 provides operating voltage, and exports 20V power supply for this driving module 2 and provide operating voltage.This output module 3 comprises by multiple insulation gate bipolar transistor (InsulatedGateBipolarTransistor, IGBT) on-off circuit formed, full wave rectifier 71 and a wave filter 72 is connected in series between this Transformer Rectifier Unit 7 with this output module 3, AC power is via output AC power source after this Transformer Rectifier Unit 7 transformation, and by full wave rectifier 71 rectification, the waveform of AC power is adjusted to the waveform of full-wave rectification, and carry out correction waveform via this wave filter 72 filtering noise information, AC power through rectification and filtered characteristic as direct supply, module 3 is exported to be supplied to, again as shown in Figure 1, load is exported to and module 4 is detected in this back coupling by this output module 3.
This control module 1 stores a data information, this data information is available a succession of in pulse width modulation signal (PulseWidthModulation according to the work period (duty-cycle) of this operating voltage, PWM) operational voltage value changed, in the present embodiment as shown in following tables of data:
table＝{80，158，200，218，250，252，
250，218，200，158，80，0，0}；
This back coupling detecting module 4 can obtain a succession of actual voltage value changed in pulse width modulation signal according to the work period of this virtual voltage, be the parameter value of digital signal by the operational voltage value corresponding conversion of this signal converting circuit to change a succession of in this data information, and be the comparison value of digital signal to the actual voltage value corresponding conversion of this succession of change.
This back coupling detecting module 4 transmits this comparison value to this control module 1, with parallel parameter value comparison, and during the parameter value of this comparison value below or above correspondence, the ratio adjusting this comparison value and this parameter value in time with back coupling means by this control module is revised towards 1, and notifies this driving module 2 with this correction result and compensate this actual voltage value through this output module 3.In the present embodiment, these back coupling means are that ratio controls.
For example, when operating voltage corresponding in this operational voltage value tables of data described above is AC220V, the pulse width modulation signal of this operational voltage value converts through this signal converting circuit the digital signal that value is 100 to; Again when actual voltage value is down to AC200V, the pulse width modulation signal of this actual voltage value converts through this signal converting circuit the digital signal that value is 90 to, now with this reference value 100 for molecule, and this comparison value 90 is denominator, can obtain ratio is 1.11111 ... again this ratio is compensated at this actual voltage value, this actual voltage value AC200V is multiplied by by this ratio, this actual voltage value can be risen to 222.22222 ..., take this actual voltage value originally declined is revised toward operational voltage value AC220V.
Above-mentioned citing is only a moment of voltage correction-compensation, in fact this virtual voltage is the dynamic reflection of the magnitude of voltage of a succession of change in the work period, the correction-compensation can knowing this voltage by inference is dynamically and continuous print, therefore can continue when power supply provides loaded work piece voltage to maintain detecting and compensating movement, and the actual voltage value that power supply provides conforms to the operational voltage value of load, can guarantee that power supply provides the voltage stabilization of load, and load must can not be decommissioned because of voltage dip, and the measure of precision of running can be maintained because of voltage stabilization, and can guarantee that load can not have the situation of damage to occur.
The above know-why being preferred embodiment of the present invention and using; for a person skilled in the art; when not deviating from the spirit and scope of the present invention; any based on apparent changes such as the equivalent transformation on technical solution of the present invention basis, simple replacements, all belong within scope.
Claims (3)
1. a detecting voltage compensation system, it is characterized in that: it comprises the closed-loop system be sequentially connected in series by control module, driving module, output module and back coupling detecting module, this output module and power supply, load are electrically connected, and this back coupling detecting module comprises the signal converting circuit providing analogy/digital signal translation function;
This control module stores a data information, and this data information is the operational voltage value of the work period available a succession of change in pulse width modulation signal according to the operating voltage of load; The work period of the virtual voltage that this back coupling detecting module exports according to power supply can obtain the actual voltage value of a succession of change in pulse width modulation signal; Be the parameter value of digital signal by the operational voltage value corresponding conversion of this signal converting circuit to change a succession of in this data information, and be the comparison value of digital signal to the actual voltage value corresponding conversion of this succession of change;
This back coupling detecting module transmits this comparison value to this control module and parallel parameter value comparison, and during the parameter value of this comparison value below or above correspondence, the ratio adjusting this comparison value and this parameter value in time with back coupling means by this control module is revised towards 1, and notifies this driving module with this correction result and compensate this actual voltage value through this output module.
2. detecting voltage compensation system as claimed in claim 1, is characterized in that: described back coupling means are that ratio controls.
3. detecting voltage compensation system as claimed in claim 1, is characterized in that: described back coupling detecting module comprises bleeder circuit and filtering circuit, and this bleeder circuit, filtering circuit are respectively to described virtual voltage dividing potential drop, filtering.
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|---|---|---|---|
| CN201410222186.5A CN105094188A (en) | 2014-05-23 | 2014-05-23 | Voltage detection and compensation device |
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| CN201410222186.5A CN105094188A (en) | 2014-05-23 | 2014-05-23 | Voltage detection and compensation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773827A (en) * | 2017-11-10 | 2019-05-21 | 上银科技股份有限公司 | The method and its system of load estimation gravity compensation for mechanical arm |
| CN110602820A (en) * | 2019-08-09 | 2019-12-20 | 漳州立达信光电子科技有限公司 | Fast start system without voltage detection |
| CN111698809A (en) * | 2019-03-13 | 2020-09-22 | 益力半导体股份有限公司 | Low-dimming fast driving system, method and controller |
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| US5408172A (en) * | 1992-11-25 | 1995-04-18 | Sharp Kabushiki Kaisha | Step-down circuit for power supply voltage capable of making a quick response to an increase in load current |
| CN1440114A (en) * | 2002-01-31 | 2003-09-03 | 东芝照明技术株式会社 | Power supply device and discharge lamp illuminator |
| TW200519557A (en) * | 2003-12-02 | 2005-06-16 | Ind Tech Res Inst | Control device of solar cell array |
| CN101893909A (en) * | 2009-05-19 | 2010-11-24 | 财团法人工业技术研究院 | Constant-power control device and control method thereof |
| CN103779954A (en) * | 2012-10-17 | 2014-05-07 | 财团法人精密机械研究发展中心 | Voltage detecting and converting device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5408172A (en) * | 1992-11-25 | 1995-04-18 | Sharp Kabushiki Kaisha | Step-down circuit for power supply voltage capable of making a quick response to an increase in load current |
| CN1440114A (en) * | 2002-01-31 | 2003-09-03 | 东芝照明技术株式会社 | Power supply device and discharge lamp illuminator |
| TW200519557A (en) * | 2003-12-02 | 2005-06-16 | Ind Tech Res Inst | Control device of solar cell array |
| CN101893909A (en) * | 2009-05-19 | 2010-11-24 | 财团法人工业技术研究院 | Constant-power control device and control method thereof |
| CN103779954A (en) * | 2012-10-17 | 2014-05-07 | 财团法人精密机械研究发展中心 | Voltage detecting and converting device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109773827A (en) * | 2017-11-10 | 2019-05-21 | 上银科技股份有限公司 | The method and its system of load estimation gravity compensation for mechanical arm |
| CN109773827B (en) * | 2017-11-10 | 2021-12-07 | 上银科技股份有限公司 | Method and system for load estimation gravity compensation of mechanical arm |
| CN111698809A (en) * | 2019-03-13 | 2020-09-22 | 益力半导体股份有限公司 | Low-dimming fast driving system, method and controller |
| CN110602820A (en) * | 2019-08-09 | 2019-12-20 | 漳州立达信光电子科技有限公司 | Fast start system without voltage detection |
| CN110602820B (en) * | 2019-08-09 | 2022-01-11 | 漳州立达信光电子科技有限公司 | Fast start system without voltage detection |
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