CN207557753U - A kind of feedback signal simulator of executing agency's absolute position encoder - Google Patents
A kind of feedback signal simulator of executing agency's absolute position encoder Download PDFInfo
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- CN207557753U CN207557753U CN201721791791.XU CN201721791791U CN207557753U CN 207557753 U CN207557753 U CN 207557753U CN 201721791791 U CN201721791791 U CN 201721791791U CN 207557753 U CN207557753 U CN 207557753U
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Abstract
The utility model belongs to power electronic equipment technical field, and in particular to a kind of feedback signal simulator of executing agency's absolute position encoder, including feedback data generation module, arbitrary wave function generator and level adapter module；Feedback data generation module includes host computer HMI and virtual instrument data processing module；Level adapter module includes RS422 protocol transceivers, supply unit and delay circuit device.The simulation of the feedback signal to executing agency's absolute position encoder is realized by feedback data generation module.The control system that can be used for executing agency by the generation of the analog signal is tested, effectively instead of motor device for detecting rotational position.It is the test equipment that common laboratory all has because arbitrary-function generator versatility is stronger, it is with good economic efficiency, solve the problem of existing apparatus cost is high, and versatility is not strong, and device is unstable.
Description
Technical field：
The utility model belongs to power electronic equipment technical field, and in particular to a kind of executing agency's absolute position encoder
Feedback signal simulator.
Background technology：
Industrial field control field is quoted in the motor rotation position of executing agency's absolute position encoder extensively, because at this
Under kind environment, there is higher requirement to system stability, therefore before motor device for detecting rotational position is set up, need to being
System is comprehensively tested, and can observe it normally communicate in the data transmission, and in the event of bus failure, system
It can correct error process mechanism.All it is the position inspection of traditional external position sensor in existing detecting system
Survey is big there are volume, of high cost, installs the shortcomings of constant.For general system testers, not one well
Selection.
Utility model content：
The purpose of this utility model is by developing the dress for simulating executing agency's absolute position encoder feedback signal
It puts, solves the problems, such as that the detection of motor rotation position and existing motor device for detecting rotational position stability are poor, the big cost of volume
Height installs the shortcomings of constant.
The technical solution adopted in the utility model is：A kind of feedback signal simulation dress of executing agency's absolute position encoder
It puts, including feedback data generation module, arbitrary wave function generator and level adapter module；The feedback data generation module
Including host computer HMI and virtual instrument data processing module；The level adapter module includes RS422 protocol transceivers, electricity
Source device and delay circuit device.
Further, the feedback data generation module is connect by data line with arbitrary-function generator, arbitrary function
Generator is connect by data line with level adapter module.
Further, host computer HMI realizes the input of user feedback data, will be defeated by virtual instrument data processing software
The data entered are quantified, and are transformed into the range of 13 bits can represent, then by the data conversion of quantization into lattice
Gray code data is finally carried out data framing, and then obtains the signal output waveform point of feedback data by thunder code.At the quantization
Reason process is：In the range of the data quantization of feedback angle input by user can be represented into 13 bits.Group word mistake
Journey is preceding by the data of Gray's representation according to MSB, and LSB carries out the group word of data rear.Wherein specific quantitative formula
For：D=8192
Feedback data generation module and arbitrary wave function carry out data connection by USB software occur, and feedback data is generated
The waveform data points that module generates are downloaded in the memory of arbitrary wave function generator, are receiving external data acquisition control
Clock triggering after start Wave data being converted into practical level to export.Wherein clock triggering condition be：It is connecing
Receive the waveform of feedback data that will be stored in Arbitrary Waveform Generator with the digit rate of 10000bps after the rising edge of external clock
Point is exported.By RS422 protocol transceivers, the position feed back signal of arbitrary-function generator is changed into and meets RS422
Level standard level signal, to send message to RS422 buses and external data acquisition controller is met RS422 level
The clock signal of standard is converted into the signal for meeting Arbitrary Waveform Generator level standard.Delay circuit, for ensureing in arbitrary letter
In the period of feedback data that number generator output is preset, valid data edge should not be received again, avoid generating the bus of mistake
Response.
The beneficial effects of the utility model：Occurred based on a kind of test equipment of common electronic field-arbitrary wave function
Device coordinates dedicated RS422 level translators, is realized by feedback data generation module to executing agency's absolute position encoder
The simulation of the feedback signal of device.The control system that can be used for executing agency by the generation of the analog signal is tested, effectively
Instead of motor device for detecting rotational position.It is that common laboratory all has because arbitrary-function generator versatility is stronger
Test equipment so the present invention is with good economic efficiency, solves existing apparatus cost height, versatility is not strong, and device is not
The problem of stablizing.
Description of the drawings：
Fig. 1 is the structure diagram of the utility model.
Specific embodiment：
With reference to Fig. 1, a kind of feedback signal simulator of executing agency's absolute position encoder is generated including feedback data
Module 2, arbitrary wave function generator 6 and level adapter module 8；The feedback data generation module 2 includes host computer HMI 3
With virtual instrument data processing module 4；The level adapter module 8 includes RS422 protocol transceivers 81,82 and of supply unit
Delay circuit device 83；The feedback data generation module 2 is connect by data line with arbitrary-function generator 6, arbitrary function
Generator 6 is connect by data line with level adapter module 8.
Feedback data generation module 2 generate data detailed process be：The angle of user's input feedback on host computer HMI 3
Degree, program receive data input by user and are carried out the quantification treatment of data, the data progress two by quantification treatment into
Then gray code data is carried out RS422 protocol groups words by data processed to the conversion of gray code data.The quantification treatment process
For：In the range of the data quantization of feedback angle input by user can be represented into 13 bits.Organizing word process is：It will
For the data of Gray's representation according to MSB preceding, LSB carries out the group word of data rear；
Wherein quantitative formula is：D=8192。
The arbitrary-function generator 6 is used for the data point signal output waveform generated according to feedback data generation module 2,
Then the waveform is sent to level adapter module 8；RS422 level adapters 81 are used for arbitrary wave function generator 6
Position feed back signal, which is changed into, meets RS422 level standard level signals, to send message and will be external to RS422 buses 10
The clock signal for meeting RS422 level standards of data acquisition controller 11 is converted into the electricity for meeting arbitrary wave function generator 6
The signal of flat standard.
When RS422 level adapters 81 are communicated with the controller 11 that data acquire, to controller transmission data, from
And it simulates the executing agency 11 with bus control unit during RS422 buses 10 communicate and sends message to data acquisition controller
Process.RS422 level adapters 81 are for detecting the rising edge for the clock signal for meeting RS422 level standards, to arbitrary wave letter
The external trigger input terminal of number generator 6 provides trigger signal so that arbitrary wave function generator 6 has been pre-seted anti-using output
Data are presented, so as to simulate the feedback data of executing agency.
The level adapter module 8 includes RS422 protocol transceivers 81, supply unit 82 and delay circuit device 83.
RS422 protocol transceivers 81 meet for the output signal of arbitrary wave function generator 6 to be changed into as defined in RS422 agreements
Level standard and be to meet the level of arbitrary wave function generator 6 by RS422 level conversions；Delay circuit device 83, is used for
Ensure in the period of feedback data preset in the output of arbitrary wave function generator 6, valid data edge should not be received again, avoided
Generate the bus response of mistake.
Claims (1)
1. a kind of feedback signal simulator of executing agency's absolute position encoder, it is characterised in that：It is produced including feedback data
Raw module（2）, arbitrary wave function generator（6）And level adapter module（8）；The feedback data generation module（2）Including
Host computer HMI（3）With virtual instrument data processing module（4）；The level adapter module（8）It is received and dispatched including RS422 agreements
Device（81）, supply unit（82）And delay circuit device（83）；The feedback data generation module（2）By data line and arbitrarily
Function generator（6）Connection, arbitrary-function generator（6）Pass through data line and level adapter module（8）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721791791.XU CN207557753U (en) | 2017-12-20 | 2017-12-20 | A kind of feedback signal simulator of executing agency's absolute position encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721791791.XU CN207557753U (en) | 2017-12-20 | 2017-12-20 | A kind of feedback signal simulator of executing agency's absolute position encoder |
Publications (1)
| Publication Number | Publication Date |
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| CN207557753U true CN207557753U (en) | 2018-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052093A (en) * | 2017-12-20 | 2018-05-18 | 哈尔滨广瀚燃气轮机有限公司 | A kind of feedback signal simulator of executing agency's absolute position encoder |
-
2017
- 2017-12-20 CN CN201721791791.XU patent/CN207557753U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052093A (en) * | 2017-12-20 | 2018-05-18 | 哈尔滨广瀚燃气轮机有限公司 | A kind of feedback signal simulator of executing agency's absolute position encoder |
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