CN206773103U - Test the equipment and system of bandwidth - Google Patents
Test the equipment and system of bandwidth Download PDFInfo
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- CN206773103U CN206773103U CN201720539313.3U CN201720539313U CN206773103U CN 206773103 U CN206773103 U CN 206773103U CN 201720539313 U CN201720539313 U CN 201720539313U CN 206773103 U CN206773103 U CN 206773103U
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Abstract
The utility model discloses a kind of equipment and system for testing bandwidth.Wherein, the equipment includes：Host computer, direct current signal and white noise signal are produced for control processor, in the case where direct current signal meets preparatory condition, direct current signal is switched to white noise signal by control processor, and the signal fed back according to white noise signal and processor under the excitation of white noise signal determines the bandwidth of servo-driver；Processor, it is connected with host computer, direct current signal and white noise signal is produced for receiving the control signal of host computer transmission, and according to control signal.The utility model solve because sine wave sweep velocity in the prior art is slow, it is necessary to artificially judge bandwidth and caused by test the low technical problem of method complexity and testing efficiency of bandwidth.
Description
Technical field
Field of signal processing is the utility model is related to, in particular to a kind of equipment and system for testing bandwidth.
Background technology
In automatic control system, in order to ensure the normal operation of servomotor, it is necessary to which testing and control servomotor operates
Servo-driver bandwidth.《AC servo driver general technical specifications》One is defined in (JB/T 10184-2000)
The method of testing of kind servo drive bandwidth, this method are specially：When servo-driver is operated under speed ring mode, input is just
String ripple rotary speed instruction, its amplitude are 0.01 times of rated speed value, and frequency is gradually risen by 1Hz, record rotating speed corresponding to motor
Curve, with the raising of command value frequency, the wavy curve of motor actual speed is relative to sine wave rotary speed instruction wavy curve
Amplitude be gradually reduced, when amplitude is reduced to the 0.707 of command value, corresponding frequency is the bandwidth of servo-driver.
From the foregoing, it will be observed that the bandwidth of existing test servo-driver needs to use sine wave signal to encourage servo-drive
Device, and then control servomotor.Also, existing method of testing needs sine wave signal generator, servo-driver, servo electricity
Machine and oscillograph etc..Therefore, the systematic comparison complexity of bandwidth is tested, test equipment is relatively more, and needs artificially to be swept
Frequency judges the bandwidth of servo-driver, and the ratio of precision for testing bandwidth is relatively low.Further, since prior art is using sine wave
Signal carries out frequency sweep, and sine wave sweep velocity is slower, and the Frequency point of test is fewer.
For it is above-mentioned because sine wave sweep velocity in the prior art is slow, it is necessary to artificially judge bandwidth and caused by calibration tape
The problem of wide method complexity and low testing efficiency, effective solution is not yet proposed at present.
Utility model content
The utility model embodiment provides a kind of equipment and system for testing bandwidth, at least to solve due to prior art
Middle sine wave sweep velocity it is slow, it is necessary to artificially judge bandwidth and caused by test bandwidth method complexity and testing efficiency it is low
Technical problem.
According to the one side of the utility model embodiment, a kind of equipment for testing bandwidth is additionally provided, including：Host computer,
Direct current signal and white noise signal are produced for control processor, in the case where direct current signal meets preparatory condition, at control
Direct current signal is switched to white noise signal by reason device, and according to white noise signal and processor under the excitation of white noise signal
The signal fed back determines the bandwidth of servo-driver；Processor, it is connected with host computer, for receiving the control of host computer transmission
Signal, and direct current signal and white noise signal are produced according to control signal.
According to the another aspect of the utility model embodiment, a kind of system for testing bandwidth, including calibration tape are additionally provided
Wide equipment.
In the utility model embodiment, by the way of white noise signal encourages servo-driver, pass through host computer control
Data collecting card processed produces direct current signal and white noise signal；In the case where direct current signal meets preparatory condition, host computer control
Data collecting card processed switches to output white noise signal；Host computer is believed according to white noise signal and servo-driver in white noise
Number excitation under the signal that is fed back determine the bandwidth of servo-driver, reached the test speed for the bandwidth for improving servo-driver
The purpose of degree and measuring accuracy, it is achieved thereby that the technique effect of the automatic frequency sweep of servo-driver, and then solve due to
In the prior art sine wave sweep velocity it is slow, it is necessary to artificially judge bandwidth and caused by test bandwidth method it is complicated and test
The low technical problem of efficiency.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not form to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the device structure schematic diagram according to a kind of test bandwidth of the utility model embodiment；And
Fig. 2 is the device structure schematic diagram according to a kind of optional test bandwidth of the utility model embodiment.
Embodiment
In order that those skilled in the art more fully understand the utility model, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that be described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all should
When the scope for belonging to the utility model protection.
According to the utility model embodiment, a kind of apparatus embodiments for testing bandwidth are additionally provided.
Fig. 1 is according to the device structure schematic diagram of the test bandwidth of the utility model embodiment, as shown in figure 1, the equipment
Including：Host computer 1001 and processor 1003.
Wherein, host computer 1001, direct current signal and white noise signal is produced for control processor, is met in direct current signal
In the case of preparatory condition, direct current signal is switched to white noise signal by control processor, and according to white noise signal and place
The signal that reason device is fed back under the excitation of white noise signal determines the bandwidth of servo-driver；Processor 1003, with host computer
Connection, direct current signal and white noise signal are produced for receiving the control signal of host computer transmission, and according to control signal.
It should be noted that above-mentioned host computer can carry out exploitation design by LabVIEW softwares, can also be entered by other software
Row exploitation design.Wherein, by using the sound in LabVIEW softwares and vibratory tool bag can control processor, and can obtain
Get data or the signal that processor collects.After the data or signal collected to processor are handled or analyzed,
Result or analysis result are included in the human-computer interaction interface by LabVIEW software developments, staff can be from people
Result or analysis result are intuitively got on machine interactive interface.In addition, staff can also be in the man-machine of host computer
The instruction that correlation is inputted on interactive interface carrys out control processor collection or produces corresponding signal.
In addition it is also necessary to explanation, above-mentioned processor comprises at least data collecting card, servo-driver and servo electricity
Machine.Wherein, a kind of device structure schematic diagram of optional test bandwidth is as shown in Fig. 2 host computer 201, number as seen from Figure 2
According to the annexation between capture card 203, servo-driver 205 and servomotor 207 4.
In a kind of optional embodiment, staff, which operates host computer, makes host computer send the generation of control data capture card
The control signal of pumping signal, after host computer receives the operational order of user, send control signals to data collecting card, data
Capture card produces direct current signal and white noise signal according to the control signal received.Wherein, it is to improve overall bandwidth test
The testing efficiency of system, above-mentioned data collecting card can be the data collecting card with high sampling rate, for example, NI PCIe, the NI
PCIe data capture card can be injected in the PCIe slots of host computer, thus, it is possible to save the space of whole test system, reduced
The complexity of system.In addition, pumping signal caused by above-mentioned data collecting card is direct current signal and white noise signal.
In an alternative embodiment, during testing the bandwidth of servo-driver, host computer hair
The control signal that control data capture card produces direct current signal to data collecting card, data collecting card is sent to be produced according to the control signal
Raw direct current signal, the direct current signal can encourage servo-driver, and servo-driver under the excitation for receiving direct current signal, watch by reception
The tach signal of motor transmission is taken, and by speed feedback signal to data collecting card.Data collecting card collects servo-driver
The tach signal of feedback, and the tach signal is sent to host computer.Host computer judges the rotating speed after the tach signal is received
Whether signal with direct current signal meets preparatory condition.If upper computer detection meets default bar to the tach signal and direct current signal
Part, then control information capture card direct current signal is switched into white noise signal, servo-driver is encouraged by white noise signal, and then
The signal that host computer feeds back according to servo-driver determines the bandwidth of servo-driver.
From the foregoing, it will be observed that producing direct current signal and white noise signal by PC control processor, meet in direct current signal
In the case of preparatory condition, direct current signal is switched to white noise signal by control processor, and according to white noise signal and place
The signal that reason device is fed back under the excitation of white noise signal determines the bandwidth of servo-driver；Processor receives host computer and sent
Control signal, and direct current signal and white noise signal are produced according to control signal.
It is easily noted that, because the application uses pumping signal of the white noise signal as servo-driver, and it is white
The excitation sweep velocity of noise faster, therefore, test servo-drive can be improved using white noise signal excitation servo-driver
The precision of the bandwidth of device.Further, since data collecting card is integrated with upper computer software, therefore, the application can be effective
The space of the system of test bandwidth is saved, reduces the complexity of system.
Based on above-mentioned analysis, the application has reached the test speed and measuring accuracy for the bandwidth for improving servo-driver
Purpose, it is achieved thereby that the technique effect of the automatic frequency sweep of servo-driver, and then solve due to sine wave in the prior art
Sweep velocity it is slow, it is necessary to artificially judge bandwidth and caused by test the method complexity of bandwidth and the low technology of testing efficiency is asked
Topic.
Optionally, host computer is additionally operable to send a control signal to processor, wherein, control signal is produced for control processor
Raw direct current signal and white noise signal, wherein, control signal includes：First control signal and the second control signal.
It should be noted that host computer send the first control signal be used for control data capture card produce direct current signal and
White noise signal.Data acquisition, which is stuck in, sends direct current signal to servo-driver, servo-driver according to the first control signal
According to direct current signal by speed feedback signal to data collecting card.In addition, the amplitude in direct current signal and tach signal matches
In the case of, host computer, which sends the second control signal to control data capture card, data collecting card, is believed pumping signal by direct current
Number switch to white noise signal.
In a kind of optional embodiment, data collecting card, for receiving the first control signal of host computer transmission, and root
Direct current signal is produced according to the first control signal, and direct current signal is switched to by white noise signal according to the second control signal；Watch
Driver is taken, for being connected with data collecting card, for adjusting the tach signal of servo-driver according to direct current signal；Servo electricity
Machine, it is connected with servo-driver, for sending tach signal to servo-driver.
In a kind of optional embodiment, servomotor includes：Encoder, it is connected with servo-driver, is watched for detecting
The rotating speed of motor is taken, obtains tach signal.
It should be noted that encoder is located on servomotor as shown in Figure 2.In addition, the rotating speed that encoder detects
For pulse signal, the pulse signal passes to servo-driver by encoder line 213, and servo-driver is receiving the rotating speed
After signal, d. c. voltage signal is converted the signal into, and send it to data collecting card.
In a kind of optional embodiment, servo-driver is additionally operable to receive the tach signal that servomotor is sent, and will turn
Fast signal is converted to analog voltage signal, and analog voltage signal is sent to data collecting card.
Specifically, servo-driver receives the white noise signal of data collecting card transmission, in the excitation of white noise signal
Under, servo-driver obtains the pulse signal of servomotor output, and pulse signal is converted into analog voltage signal, finally will
Analog voltage signal (d. c. voltage signal after i.e. above-mentioned conversion) is sent to data collecting card, wherein, analog voltage signal is
The signal that servo-driver is fed back under the excitation of white noise signal.
In a kind of optional embodiment, data collecting card is additionally operable to gather the response signal of servo-driver feedback.
Specifically, staff can produce direct current signal by PC control data collecting card, and pass through host computer
Human-computer interaction interface observation servo-driver feedback tach signal and direct current signal caused by data collecting card whether phase
Match somebody with somebody.If direct current signal caused by the tach signal and data collecting card of servo-driver feedback does not match that, servo-drive
Device feeds back to the real-time tach signal for the servomotor that servomotor is fed back by encoder line by a simulation output mouth
Data collecting card, a kind of device structure schematic diagram of optional test bandwidth as shown in Figure 2.In fig. 2, data collecting card
AO-0 ends are used for output drive signal (including direct current signal and white noise signal), and AI-0 is used to obtain by three-way connection 209
Pumping signal caused by data collecting card (i.e. the output signal 217 of data collecting card), AI-1 are used to obtain by coaxial cable 2
The response signal (i.e. the input signal 215 of data collecting card) of servo-driver feedback.
In a kind of optional embodiment, host computer before the first control signal to data collecting card is sent, adopt by data
Pumping signal caused by truck is direct current signal.Amplitude and data collecting card institute in the tach signal that servo-driver is fed back
In the case that the amplitude of caused direct current signal is consistent, host computer sends the first control signal.Data acquisition, which is stuck in, receives
After one control signal, pumping signal is switched into white noise signal, servo-driver is encouraged by white noise signal.
It should be noted that pumping signal (i.e. direct current signal and white noise signal) is exported by AO-0, pass through coaxial electrical
Cable 1 is output to three-way connection.Then exported by three-way connection to coaxial cable 3 and 4, i.e., now, data collecting card passes through AI-
0 collection pumping signal.In addition, AO-1 is another output port of data collecting card, can be used as standby port.
In a kind of optional embodiment, as shown in Figure 2, processor also includes：Three-way connection 209, UVW lines 211 and volume
Code device line 213.Wherein, three-way connection 209, for connecting data collecting card and servo-driver by coaxial cable；UVW lines
211, for connecting servo-driver and servomotor；Encoder line 213, is connected between servo-driver and servomotor,
For transmitting tach signal to servo-driver.
In addition, in a kind of preferred embodiment, unwrap and send with vibratory tool first by the sound of LabVIEW softwares
Upper computer software, host computer carry out initialization process to servo-driver, its operational mode are arranged into speed ring mode, then
Host computer driving data capture card gives servo-driver direct current signal.Servo-driver is under the excitation of direct current signal, to data
Capture card feedback response signal.Host computer gets response signal and pumping signal by data collecting card, and judges response letter
It is number whether consistent with pumping signal, if both are inconsistent, the simulation output gain of servo-driver is adjusted, until both
Amplitude is consistent.Then host computer sends control signal, and control data capture card switching output signal is white noise signal, and data are adopted
Truck encourages servo-driver with white noise signal, and servo-driver sends the tach signal of return to data collecting card.Most
Host computer is shown to pumping signal and response signal afterwards, and it is analyzed, and then obtains amplitude characteristic curve and phase
Frequency characteristic curve, and calculate according to amplitude characteristic curve and phase-frequency characteristic curve the bandwidth of servo-driver.
According to the another aspect of the utility model embodiment, a kind of system for testing bandwidth, including calibration tape are additionally provided
Wide equipment.
Above-mentioned the utility model embodiment sequence number is for illustration only, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description to each embodiment all emphasizes particularly on different fields, in some embodiment
The part not being described in detail, it may refer to the associated description of other embodiment.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (10)
- A kind of 1. equipment for testing bandwidth, it is characterised in that including：Host computer, direct current signal and white noise signal are produced for control processor, meets preparatory condition in the direct current signal In the case of, control the processor that the direct current signal is switched into the white noise signal, and believed according to the white noise Number and the signal that is fed back under the excitation of the white noise signal of the processor determine the bandwidth of servo-driver；The processor, it is connected with the host computer, the control signal sent for receiving the host computer, and according to the control Signal processed produces the direct current signal and the white noise signal.
- 2. equipment according to claim 1, it is characterised in that the host computer is additionally operable to send the control signal to institute Processor is stated, wherein, the control signal is used to control the processor to produce the direct current signal and the white noise signal, Wherein, the control signal includes：First control signal and the second control signal.
- 3. equipment according to claim 2, it is characterised in that the processor includes：Data collecting card, first control signal sent for receiving the host computer, and believed according to the described first control Number the direct current signal is produced, and switch to the white noise to believe the direct current signal according to second control signal Number；The servo-driver, for being connected with the data collecting card, for adjusting the servo according to the direct current signal The tach signal of driver；Servomotor, it is connected with the servo-driver, for sending the tach signal to the servo-driver.
- 4. equipment according to claim 3, it is characterised in that the servomotor includes：Encoder, it is connected with the servo-driver, for detecting the rotating speed of the servomotor, obtains the tach signal.
- 5. equipment according to claim 4, it is characterised in that the servo-driver is additionally operable to receive the servomotor The tach signal of transmission, the tach signal is converted into analog voltage signal, and the analog voltage signal is sent to institute State data collecting card.
- 6. equipment according to claim 3, it is characterised in that the data collecting card is additionally operable to gather the servo-drive The response signal of device feedback.
- 7. equipment according to claim 3, it is characterised in that the processor also includes：Three-way connection, for connecting the data collecting card and the servo-driver by coaxial cable.
- 8. equipment according to claim 3, it is characterised in that the processor also includes：UVW lines, for connecting the servo-driver and the servomotor.
- 9. equipment according to claim 3, it is characterised in that the processor also includes：Encoder line, it is connected between the servo-driver and the servomotor, for transmitting the tach signal to institute State servo-driver.
- 10. a kind of system for testing bandwidth, it is characterised in that including the test bandwidth described in any one in claim 1 to 9 Equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539313.3U CN206773103U (en) | 2017-05-12 | 2017-05-12 | Test the equipment and system of bandwidth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720539313.3U CN206773103U (en) | 2017-05-12 | 2017-05-12 | Test the equipment and system of bandwidth |
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| CN206773103U true CN206773103U (en) | 2017-12-19 |
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| CN201720539313.3U Active CN206773103U (en) | 2017-05-12 | 2017-05-12 | Test the equipment and system of bandwidth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015086A (en) * | 2017-05-12 | 2017-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Test method, device, system and the equipment of bandwidth |
| CN111781499A (en) * | 2020-06-29 | 2020-10-16 | 苏州臻迪智能科技有限公司 | Electric tuning test method, device, electronic equipment, storage medium and system |
-
2017
- 2017-05-12 CN CN201720539313.3U patent/CN206773103U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015086A (en) * | 2017-05-12 | 2017-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Test method, device, system and the equipment of bandwidth |
| CN111781499A (en) * | 2020-06-29 | 2020-10-16 | 苏州臻迪智能科技有限公司 | Electric tuning test method, device, electronic equipment, storage medium and system |
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