CN202917951U - Alternating current (AC) servo driver - Google Patents
Alternating current (AC) servo driver Download PDFInfo
- Publication number
- CN202917951U CN202917951U CN 201220610289 CN201220610289U CN202917951U CN 202917951 U CN202917951 U CN 202917951U CN 201220610289 CN201220610289 CN 201220610289 CN 201220610289 U CN201220610289 U CN 201220610289U CN 202917951 U CN202917951 U CN 202917951U
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- sample circuit
- switch
- circuit
- releasing
- servo driver
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Abstract
The utility model discloses an alternating current (AC) servo driver, comprising a power input end, a motor coupling end, a first sampling circuit, a second sampling circuit and a bleeder circuit. The bleeder circuit comprises a bleeder switch and a bleeder resistor connected with the bleeder switch. A front end of the first sampling circuit, a front end of the second sampling circuit, and the motor coupling end are connected on the power input end. A rear end of the first sampling circuit and a rear end of the second sampling circuit are connected with a front end of the bleeder switch. The first sampling circuit and the second sampling circuit are provided with a first comparison voltage input end and a second comparison voltage input end respectively. The AC servo driver can perform more precise bleed control on voltage and improve system reliability.
Description
Technical field
The utility model relates to a kind of AC servo driver.
Background technology
Present general AC servo driver; when motor from anxious stopping time at a high speed, the kinetic transformation of motor becomes electric energy, and busbar voltage is elevated to more than 450 volts; in order to protect the hardware of driver; need to unnecessary power consumption be fallen, busbar voltage is remained on below 400 volts, the existing practice is to adopt resistance to release; its circuit is: detect in real time busbar voltage; when surpassing when releasing point voltage, at once open the switch of releasing, release with bleeder resistance.
But, at some industrial areas of China, the voltage fluctuation of commercial power is large (particularly evening) very, when line voltage is very high, cause busbar voltage to reach the point voltage of releasing, driver also can be released, if when causing the frequency of releasing very high because line voltage is high, driver and bleeder resistance can seriously generate heat, and make drive corruption, badly influence the reliability of whole circuit.
Summary of the invention
Based on this, the utility model is to overcome the defective of prior art, and a kind of AC servo driver is provided, and the utility model can to the voltage control of releasing more accurately, improve the reliability of system.
Its technical scheme is as follows:
A kind of AC servo driver, include power input, motor link, the first sample circuit, the second sample circuit and leadage circuit, leadage circuit includes the bleeder resistance of releasing switch and being connected with the switch of releasing, the front end of the front end of the first sample circuit, the second sample circuit, motor link are connected on the power input, the rear end of the rear end of the first sample circuit, the second sample circuit is connected with the front end of the switch of releasing, and is respectively equipped with the first comparative voltage input, the second comparative voltage input on the first sample circuit, the second sample circuit.
The below describes further technical scheme:
At described the first sample circuit and release also to be provided with between the switch and allow the switch of releasing, rear end and this of described the first sample circuit, the second sample circuit switch that allows to release is connected.
Described the first sample circuit and the second sample circuit have included divider resistance, sampling resistor and comparator, divider resistance and sampling resistor are connected in series, and its tie point is connected with the first input end of comparator, the second input of comparator is the setting voltage input, and the output of comparator is connected with the described switch of releasing.
Front end at described the first sample circuit and the second sample circuit is equipped with bridge rectifier and filter circuit.
The below describes advantage or the principle of aforementioned techniques scheme:
This AC servo driver is sampled to the voltage of power input, and set respectively two different magnitudes of voltage by the first comparative voltage input, the second comparative voltage input respectively, sampled voltage is within the voltage range of these two settings, the switch opens of then releasing, and discharge by bleeder resistance, otherwise forbid releasing, improved the reliability of system, avoid burning out element.
Description of drawings
Fig. 1 is the structure chart of the described AC servo driver of the utility model embodiment;
Description of reference numerals:
10, power input, 20, motor link, 31, divider resistance, 32, sampling resistor, 33, comparator, 331, the first comparative voltage input, the 332, first comparative voltage input, 40, the switch of releasing, 50, bleeder resistance, 60, allow the switch of releasing, 70, bridge rectifier, 80, filter circuit.
Embodiment
The below is elaborated to embodiment of the present utility model:
As shown in Figure 1, a kind of AC servo driver, include power input 10, motor link 20, the first sample circuit, the second sample circuit and leadage circuit, leadage circuit includes the bleeder resistance 50 of releasing switch 40 and being connected with the switch 40 of releasing, the front end of the first sample circuit, the front end of the second sample circuit, motor link 20 is connected on the power input 10, the rear end of the first sample circuit, the rear end of the second sample circuit is connected the first sample circuit with the front end of the switch 40 of releasing, be respectively equipped with the first comparative voltage input 331 on the second sample circuit, the second comparative voltage input 332.
Wherein, at described the first sample circuit and release also to be provided with between the switch 40 and allow to release switch 60, rear end and this of described the first sample circuit, the second sample circuit switch 60 that allows to release is connected.
Described the first sample circuit and the second sample circuit have included divider resistance 31, sampling resistor 32 and comparator 33, divider resistance 31 is connected in series with sampling resistor 32, and its tie point is connected with the first input end of comparator 33, the second input of comparator 33 is the setting voltage input, and the output of comparator 33 is connected with the described switch 40 of releasing.Front end at described the first sample circuit and the second sample circuit is equipped with bridge rectifier 70 and filter circuit 80.
The present embodiment has following advantage:
This AC servo driver is sampled to the voltage of power input 10, and set respectively two different magnitudes of voltage by the first comparative voltage input 331, the second comparative voltage input 332 respectively, sampled voltage is within the voltage range of these two settings, the switch 40 of then releasing is opened, and discharge by bleeder resistance 50, otherwise forbid releasing, improved the reliability of system, avoid burning out element.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (4)
1. AC servo driver, it is characterized in that, include power input, the motor link, the first sample circuit, the second sample circuit and leadage circuit, leadage circuit includes the bleeder resistance of releasing switch and being connected with the switch of releasing, the front end of the first sample circuit, the front end of the second sample circuit, the motor link is connected on the power input, the rear end of the first sample circuit, the rear end of the second sample circuit is connected with the front end of the switch of releasing, the first sample circuit, be respectively equipped with the first comparative voltage input on the second sample circuit, the second comparative voltage input.
2. described AC servo driver according to claim 1 is characterized in that, at described the first sample circuit and release also to be provided with between the switch and allow the switch of releasing, rear end and this of described the first sample circuit, the second sample circuit switch that allows to release is connected.
3. described AC servo driver according to claim 1, it is characterized in that, described the first sample circuit and the second sample circuit have included divider resistance, sampling resistor and comparator, divider resistance and sampling resistor are connected in series, and its tie point is connected with the first input end of comparator, the second input of comparator is the setting voltage input, and the output of comparator is connected with the described switch of releasing.
4. described AC servo driver according to claim 1 is characterized in that, is equipped with bridge rectifier and filter circuit at the front end of described the first sample circuit and the second sample circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610289 CN202917951U (en) | 2012-11-16 | 2012-11-16 | Alternating current (AC) servo driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610289 CN202917951U (en) | 2012-11-16 | 2012-11-16 | Alternating current (AC) servo driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917951U true CN202917951U (en) | 2013-05-01 |
Family
ID=48166227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220610289 Expired - Fee Related CN202917951U (en) | 2012-11-16 | 2012-11-16 | Alternating current (AC) servo driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202917951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091987A (en) * | 2017-06-14 | 2017-08-25 | 东华大学 | A kind of Voltage Feedback system of automobile window motor performance test |
-
2012
- 2012-11-16 CN CN 201220610289 patent/CN202917951U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091987A (en) * | 2017-06-14 | 2017-08-25 | 东华大学 | A kind of Voltage Feedback system of automobile window motor performance test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20181116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |