CN112491324A - Motor control integrated system for transmission testing rack - Google Patents
Motor control integrated system for transmission testing rack Download PDFInfo
- Publication number
- CN112491324A CN112491324A CN202011199752.7A CN202011199752A CN112491324A CN 112491324 A CN112491324 A CN 112491324A CN 202011199752 A CN202011199752 A CN 202011199752A CN 112491324 A CN112491324 A CN 112491324A
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- CN
- China
- Prior art keywords
- control system
- voltage signal
- frequency converter
- driving motor
- labview
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/045—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention relates to a motor control integrated system for a transmission test bench, which comprises a driving motor, a frequency converter and a control module, wherein the driving motor is connected with the frequency converter; the control module comprises a LabVIEW control system, and the frequency converter receives a voltage signal output by the LabVIEW control system and controls the rotating speed of the driving motor according to the voltage signal. The driving motor is controlled by the LabVIEW control system, the script in the LabVIEW control system is used for automatically running, flexible editing is achieved, the test with frequently adjusted parameters and large test quantity is completed, the test time is greatly shortened, and the test efficiency and the test accuracy are improved. Meanwhile, the LabVIEW control system can also perform basic control acquisition and is also provided with a frequency converter for calibration.
Description
Technical Field
The invention relates to the technical field of transmission testing, in particular to a motor control integrated system for a transmission testing bench.
Background
In a transmission test, a driving motor is often used for controlling the input speed of the transmission instead of an engine, and the driving motor and other equipment are generally communicated through a frequency converter. For example, as shown in fig. 1, a knob control system is used to control a driving motor, if the transmission needs to be in an idle state, a knob switch needs to be manually controlled to change the frequency of a frequency converter and then send an instruction to the driving motor to control the rotating speed of the driving motor, and because the knob control system cannot be integrated into a software automatic program, when the test for frequently changing the rotating speed of the driving motor is performed, the operation is complicated, and the accuracy and the efficiency are low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a motor control integrated system for a transmission testing bench, which meets the requirements of frequent regulation of rotating speed and large testing amount and improves the testing efficiency, the testing accuracy and the testing precision.
In order to solve the technical problems, the technical scheme of the invention is as follows: a motor control integrated system for a transmission test bench comprises a driving motor, a frequency converter and a control module; the control module comprises a LabVIEW control system, and the frequency converter receives a voltage signal output by the LabVIEW control system and controls the rotating speed of the driving motor according to the voltage signal.
According to the preferred technical scheme, the LabVIEW control system converts the input command rotating speed into a digital voltage signal through a preset rotating speed voltage relation, and the digital voltage signal is converted into an analog voltage signal through a DA converter and is output.
As a preferred technical solution, the DA converter converts the digital voltage signal into the analog voltage signal through serial digital-to-analog conversion.
As a preferred technical solution, the relationship between the rotation speed and the voltage is as follows:
V=0.00006×
+0.4986×n+597.5;
wherein, V is the voltage of the frequency converter, and n represents the rotating speed of the driving motor.
As a preferred technical scheme, the LabVIEW control system measures the rotating speed of the driving motor through a rotating speed sensor and measures the voltage signal of the frequency converter through a multimeter.
As a preferred technical scheme, the control module further comprises a knob control system and a change-over switch; the frequency converter receives a voltage signal output by the knob control system and controls the rotating speed of the driving motor according to the voltage signal; and the frequency converter is switched between the knob control system and the LabVIEW control system through a selector switch.
As a preferable technical scheme, when the knob control system is switched on, voltage signals corresponding to different switching-on positions of the knob control system are output to the frequency converter.
By adopting the technical scheme, the motor control integrated system for the transmission test bench controls the driving motor through the LabVIEW control system, utilizes the automatic operation function of the script in the LabVIEW control system, flexibly edits, completes the test with frequently adjusted parameters and large test quantity, greatly shortens the test time, and improves the test efficiency and the test accuracy. Meanwhile, the LabVIEW control system can also perform basic control acquisition and is also provided with a frequency converter for calibration.
The knob control system and the LabVIEW control system are integrated, the two control systems are mutually complementary, and the test capability of the bench is obviously improved; the arrangement of the selector switch enables the two control systems to be switched flexibly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art knob switch controlled drive motor;
FIG. 2 is a control schematic diagram of a LabVIEW control system in an embodiment of the invention;
fig. 3 is a control schematic of the present invention.
Detailed Description
A motor control integrated system for a transmission test bench comprises a driving motor, a frequency converter and a control module; the frequency converter is electrically connected with the driving motor and controls the rotating speed of the driving motor.
The control module comprises a knob control system, a LabVIEW control system and a change-over switch; the knob control system and the LabVIEW control system can independently realize the control of the driving motor. The frequency converter receives a voltage signal output by the knob control system or the LabVIEW control system, and the frequency converter switches between the knob control system and the LabVIEW control system through the selector switch.
LabVIEW is a program development environment developed by NI company, the LabVIEW control system measures the rotating speed of a driving motor through a rotating speed sensor, a universal meter measures a voltage signal of a frequency converter, and the rotating speed of the driving motor and the voltage signal of the frequency converter are fed back to the LabVIEW control system through serial port communication, so that an accurate rotating speed signal of the driving motor is obtained, and parameters in the frequency converter are calibrated.
And the special test can be completed by flexibly editing the script automatic operation function in the LabVIEW control system. As shown in fig. 2, the LabVIEW control system converts the digital voltage signal into a digital voltage signal through a predetermined speed-voltage relation according to the input command speed, the DA converter converts the digital voltage signal into an analog voltage signal through serial digital-to-analog conversion and outputs the analog voltage signal, and the frequency converter receives the voltage signal and controls the driving motor according to the voltage signal.
The LabVIEW control system firstly samples the rotating speed of the driving motor and the voltage signal of the frequency converter, and obtains the voltage signals corresponding to different rotating speeds from zero rotating speed of the driving motor to the highest rotating speed with the sampling order of 100 rpm; and then sampling the frequency converter voltage signal corresponding to each rotating speed for multiple times, and finally averaging to form a rotating speed-voltage relational expression according to sampling data.
After the rotating speed voltage relational expression is determined, the rotating speed voltage relational expression is verified for many times, the optimization of the rotating speed voltage relational expression is completed, and the testing consistency is ensured. The finally determined rotating speed voltage relation is as follows:
V=0.00006×
+0.4986×n+597.5;
wherein, V is the voltage of the frequency converter, and n represents the rotating speed of the driving motor.
When the knob control system is switched on, voltage signals corresponding to different switching-on positions of the knob control system are output to the frequency converter. This is prior art and will not be described in detail here.
The drive motor is controlled to be in a manual control mode through the knob control system, the drive motor is controlled to be in an automatic control mode through the LabVIEW control system, and the switch controls the switching between the manual control mode and the automatic control mode. The manual control mode is considered to be effective by default, and when the LabVIEW control system is required to control the driving motor, the change-over switch is required to be operated for switching.
The motor control integrated system for the transmission test bench takes a knob control system as a main part and a LabVIEW control system as an auxiliary part, so that control conflict between the knob control system and the LabVIEW control system is prevented. The knob control system is used as a default control system, so that the control and monitoring are more visual, and the knob control system is suitable for tests with small detection amount, irregular control and adjustment and flexible adjustment; the LabVIEW control system is used as an auxiliary control system, is suitable for testing large detection quantity and frequent rotation speed adjustment, improves the accuracy and precision by automatic control, greatly shortens the test time and improves the test efficiency.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a derailleur is motor control integrated system for test bench which characterized in that: the device comprises a driving motor, a frequency converter and a control module; the control module comprises a LabVIEW control system, and the frequency converter receives a voltage signal output by the LabVIEW control system and controls the rotating speed of the driving motor according to the voltage signal.
2. The motor control integration system for a transmission test stand of claim 1, wherein: the LabVIEW control system converts the input command rotating speed into a digital quantity voltage signal through a preset rotating speed voltage relation, and the digital quantity voltage signal is converted into an analog quantity voltage signal through a DA converter and is output.
3. The motor control integration system for a transmission test stand of claim 2, wherein: the DA converter converts a digital quantity voltage signal into an analog quantity voltage signal through serial digital-to-analog conversion.
4. The motor control integration system for a transmission test stand of claim 2, wherein: the relationship between the rotating speed and the voltage is as follows:
V=0.00006×
+0.4986×n+597.5;
wherein, V is the voltage of the frequency converter, and n represents the rotating speed of the driving motor.
5. The motor control integration system for a transmission test stand of claim 1, wherein: LabVIEW control system measures the rotational speed of driving motor through speed sensor, measures the voltage signal of converter through the universal meter.
6. The motor control integration system for a transmission test stand of claim 1, wherein: the control module also comprises a knob control system and a change-over switch; the frequency converter receives a voltage signal output by the knob control system and controls the rotating speed of the driving motor according to the voltage signal; and the frequency converter is switched between the knob control system and the LabVIEW control system through a selector switch.
7. The motor control integration system for a transmission test stand of claim 6, wherein: when the knob control system is switched on, voltage signals corresponding to different switching-on positions of the knob control system are output to the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199752.7A CN112491324A (en) | 2020-11-02 | 2020-11-02 | Motor control integrated system for transmission testing rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199752.7A CN112491324A (en) | 2020-11-02 | 2020-11-02 | Motor control integrated system for transmission testing rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112491324A true CN112491324A (en) | 2021-03-12 |
Family
ID=74926366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011199752.7A Pending CN112491324A (en) | 2020-11-02 | 2020-11-02 | Motor control integrated system for transmission testing rack |
Country Status (1)
| Country | Link |
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| CN (1) | CN112491324A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702028A (en) * | 2021-07-14 | 2021-11-26 | 柏科（常熟）电机有限公司 | Real and virtual combined full-automatic gearbox testing system and method |
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| CN204495970U (en) * | 2015-03-09 | 2015-07-22 | 无锡惠科电工高新技术有限公司 | Energy-saving of motor system test platform |
| CN105372537A (en) * | 2015-12-10 | 2016-03-02 | 中冶南方（武汉）自动化有限公司 | Labview/PDA-based frequency converter intelligent test platform |
| CN109243285A (en) * | 2018-11-12 | 2019-01-18 | 湖北文理学院 | A kind of motor speed control experiment porch and method based on rapid control prototyping |
| CN112213958A (en) * | 2020-10-24 | 2021-01-12 | 济宁学院 | Electro-hydraulic control comprehensive simulation test platform |
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2020
- 2020-11-02 CN CN202011199752.7A patent/CN112491324A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204495970U (en) * | 2015-03-09 | 2015-07-22 | 无锡惠科电工高新技术有限公司 | Energy-saving of motor system test platform |
| CN105372537A (en) * | 2015-12-10 | 2016-03-02 | 中冶南方（武汉）自动化有限公司 | Labview/PDA-based frequency converter intelligent test platform |
| CN109243285A (en) * | 2018-11-12 | 2019-01-18 | 湖北文理学院 | A kind of motor speed control experiment porch and method based on rapid control prototyping |
| CN112213958A (en) * | 2020-10-24 | 2021-01-12 | 济宁学院 | Electro-hydraulic control comprehensive simulation test platform |
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| 李云明等: "机械密封性能参数测量***的设计", 《计算机测量与控制》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702028A (en) * | 2021-07-14 | 2021-11-26 | 柏科（常熟）电机有限公司 | Real and virtual combined full-automatic gearbox testing system and method |
| CN113702028B (en) * | 2021-07-14 | 2024-05-10 | 柏科（常熟）电机有限公司 | Real and virtual combined full-automatic gearbox testing system and method |
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Application publication date: 20210312 |