CN110634367A - Virtual motor power measuring platform and method based on LabVIEW - Google Patents
Virtual motor power measuring platform and method based on LabVIEW Download PDFInfo
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- CN110634367A CN110634367A CN201910855078.4A CN201910855078A CN110634367A CN 110634367 A CN110634367 A CN 110634367A CN 201910855078 A CN201910855078 A CN 201910855078A CN 110634367 A CN110634367 A CN 110634367A
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/24—Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/187—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for measuring instruments
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Abstract
The invention provides a virtual motor power measuring platform and a method based on LabVIEW, comprising a parameter module, an operation detection module, a data module and a display module; the platform can output specific data of the rotating speed, the torque, the input power, the output power and the efficiency of the tested motor as long as a user inputs automobile parameters of the needed dynamometer motor; compared with the traditional motor dynamometer experiment, the motor dynamometer experiment system does not need to purchase high-volume motor dynamometer experiment equipment, greatly reduces the experiment cost, is beneficial to systematic teaching of the motor in colleges and universities, and improves the teaching quality.
Description
Technical Field
The invention relates to the field of power measurement of motor for vehicles, in particular to a virtual motor power measurement platform and method based on LabVIEW.
Background
The vehicle-mounted motor is used as the heart of the new energy automobile, and the motor teaching is also the key point of the new energy automobile teaching. At present, a large amount of experimental equipment needs to be purchased in motor teaching, and the traditional experimental equipment has the defects of high cost, large volume and difficult management, so that a plurality of colleges and universities lack experimental equipment and a plurality of students cannot frequently contact the experimental equipment. New energy automobile motor teaching is no exception, and traditional motor dynamometer platform is few then hundreds of thousands, and some hundreds of thousands are millions, even can purchase also be few, can not let every student can both do the experiment, and the teaching quality is not good, and student's study is influenced. Apart from the price, these instruments are very large in size and need to be tested in a special laboratory, and the communication between the instruments is very troublesome, and needs a teacher to guide one by one.
Disclosure of Invention
The invention mainly aims to provide a LabVIEW-based virtual motor power measuring platform and a LabVIEW-based virtual motor power measuring method, and solves the problems that existing motor teaching experimental equipment in colleges and universities is high in price, relevant teaching equipment is lacked in colleges and universities, teaching quality is poor, students cannot perform corresponding experiments, and learning is affected.
In order to achieve the above object, the present invention provides a virtual motor power measurement platform based on LabVIEW, comprising:
the parameter module is used for receiving and recording automobile parameters input by a user and transmitting the parameters to the operation detection module;
the operation detection module is used for performing operation on the parameters received from the parameter module, outputting an operation result and transmitting the operation result to the data module;
the data module comprises various kinds of external characteristic data of the motor, and the required external characteristic data of the appointed motor is called according to the selection of a user; after receiving the operation result, the data module matches corresponding target external characteristic data from the external characteristic data of the appointed motor according to the operation result and transmits the target external characteristic data to the display module;
and the display module is used for displaying the related information to the user.
Preferably, the display module comprises an automobile parameter display module and a motor data display module.
Preferably, the parameters of the parameter module comprise the mass of the whole vehicle, the windward area, the wind resistance coefficient, the rolling radius of the tire, the reduction ratio transmission efficiency, the gradient parameter and the reference speed.
Preferably, the operation detection module receives the parameter data of the parameter module, and the operation result obtained by operation is the rotating speed and the torque required by the running of the whole vehicle.
Preferably, the external characteristic data in the data module is obtained by recording external characteristic data of the motor measured by a traditional dynamometer platform or external characteristic data obtained by a traction motor simulation model.
Preferably, the external characteristic data in the data module comprises the rotating speed, the torque, the input power, the output power and the efficiency of the tested motor.
Preferably, the external characteristic data in the data module comprises external characteristic data of a T790S02 type permanent magnet synchronous motor, and the external characteristic data of the T790S02 type permanent magnet synchronous motor is acquired through a traditional dynamometer platform experiment.
Preferably, the virtual motor power measuring method based on LabVIEW provided by the invention comprises the following steps:
a user inputs automobile parameters needing power measurement to the platform and selects an external motor characteristic database file with a specified model;
the parameter module receives automobile parameters input by a user and transmits the automobile parameters to the operation detection module;
the operation detection module receives the automobile parameters, outputs operation results through equation operation, and sends the operation results to the data module;
the data module firstly calls a motor external characteristic database file of the type according to the motor type designated by a user, then acquires matched target external characteristic data from the motor external characteristic database file of the type according to an operation result, and transmits the target external characteristic data to the display module;
and the display module displays the received off-purpose characteristic data to a user.
The invention provides a LabVIEW-based virtual motor power measuring platform and a method, which have the beneficial effects that:
1. according to the virtual motor power measuring platform and method based on the LabVIEW, provided by the invention, the external characteristic data of the motor can be obtained by inputting the automobile parameters of the measured motor on the platform, the traditional power measuring platform is not required to purchase high-volume experimental equipment, the teaching cost is reduced, and the teaching quality is improved;
2. the platform display module is visual and clear, is beneficial to understanding and learning of students, and simultaneously improves the teaching quality of universities and colleges;
3. the external characteristic database of the motor comprises external characteristic data of motors of various models, has abundant experimental data, and compared with the traditional power measuring method, different motors need to be configured with different required accessories for power measurement, so that the experimental cost is greatly reduced, the system teaching of different motors is facilitated for universities and colleges, and the teaching quality is improved.
Drawings
FIG. 1 is a schematic block diagram of a virtual machine dynamometer platform according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating steps of a virtual machine power measuring method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a database file of a model T790S02 motor model in an embodiment of the invention;
fig. 4 is a schematic diagram of a display module according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The embodiment of the invention provides a LabVIEW-based virtual motor power measuring platform, which mainly aims at the problems that a large amount of financial purchasing experimental equipment is difficult to provide in new energy automobile motor teaching in the current advanced colleges, the teaching quality is not improved, and students cannot further deepen understanding and learning of knowledge in a practice mode.
The virtual motor power measuring platform based on LabVIEW provided by the embodiment of the invention comprises a parameter module, an operation detection module, a data module and a display module.
The parameter module is used for receiving and recording automobile parameters input by a user and transmitting the parameters to the operation detection module;
the operation detection module is used for performing operation on the parameters received from the parameter module, outputting an operation result and transmitting the operation result to the data module;
the data module comprises various kinds of external characteristic data of the motor, and the required external characteristic data of the appointed motor is called according to the selection of a user; after receiving the operation result, the data module matches corresponding target external characteristic data from the external characteristic data of the appointed motor according to the operation result and transmits the target external characteristic data to the display module;
and the display module is used for displaying the related information to the user.
Specifically, the display module comprises an automobile parameter display module and a motor data display module.
In this embodiment, a student is used as a user side, and according to the prompt of an automobile parameter display module in a display module, the student inputs the specific parameters of the automobile needing power measurement to a platform and selects and designates an external characteristic data file of a motor; the parameter module can record and store the input corresponding parameters and send the automobile parameters to the operation detection module, and the operation detection module operates the parameters after receiving the automobile parameters to finally obtain an operation result; the data module comprises various kinds of motor external characteristic data, the required designated motor external characteristic data is called according to the selection of a user, after the data module receives the operation result, the corresponding target external characteristic data is matched from the designated motor external characteristic data according to the operation result, the target external characteristic data is transmitted to a motor data display module in the display module, and the motor external characteristic data obtained according to the automobile parameters are displayed for a student user.
In this embodiment, as shown in fig. 4, the display module includes an automobile parameter display module and a motor data display module, the automobile parameter display module is used for displaying automobile parameters required for operation, names and units of the parameters are displayed on the automobile parameter display module, and students can input specific parameter values according to the prompts, so that the teaching device is intuitive and clear, is convenient for students to learn and use, and reduces the learning pressure of the students; the motor data display module is used for displaying finally obtained motor external characteristic parameters, specifically, the motor rotating speed and the motor torque display the rotating speed value and the torque value in a dividing disc mode, the motor input power and the motor output power display the motor input power value and the motor output power value in a curve graph mode, students can visually observe the size change of each value, the learning and understanding of the students are facilitated, and the teaching quality is improved.
Further, in this embodiment, the parameters of the parameter module include a vehicle mass, a windward area, a wind resistance coefficient, a rolling resistance coefficient, a tire rolling radius, a reduction ratio transmission efficiency, a gradient parameter, and a reference speed; the operation detection module receives the parameter data and performs operation to obtain an operation result, the operation result is the rotating speed and the torque required by the running of the whole vehicle, and after the rotating speed and the torque of the motor are obtained, the external characteristic data of the motor in the data module can be matched to obtain an experiment result.
Specifically, an equation is calculated based on the torque of the motorAnd equation for calculating the rotational speed of the motorWherein m represents the mass of the automobile; v. ofaRepresents a running speed;
represents a running acceleration; i represents the climbing gradient; cDIs the wind resistance coefficient; a is the windward area; and delta is a conversion coefficient of the rotating mass of the automobile, so that to obtain the torque and the rotating speed of the motor, the students are required to provide the parameters comprising the mass of the whole automobile, the windward area, the wind resistance coefficient, the rolling radius of the tire, the reduction ratio transmission efficiency, the gradient parameter and the reference speed, in other words, as long as the students input the parameter data into the platform, the operation detection module in the platform can rapidly obtain the torque and the rotating speed of the motor, and the external characteristic data of the motor in the data module can be matched to obtain an experimental result.
Further, in this embodiment, the external characteristic data in the data module includes the rotation speed, torque, input power, output power, and efficiency of the motor to be measured, the data is the final experiment result required to be obtained in the motor dynamometer experiment, the external characteristic data included in the data module can directly provide the experiment result for students through the virtual dynamometer platform, and students can be practiced through the virtual dynamometer platform of the present invention without spending high cost to purchase the conventional dynamometer platform in colleges and universities.
Further, in this embodiment, the external characteristic data in the data module may be obtained by recording external characteristic data of the motor measured by a conventional dynamometer platform, or may be obtained by using a traction motor simulation model.
Specifically, in this embodiment, the method for acquiring external characteristic data of the motor by using a conventional dynamometer platform specifically includes: preparing traditional dynamometer equipment, which consists of a dynamometer motor, a frequency converter, a battery pack power supply system, a traction motor, a driving system and a data acquisition system, controlling the equipment through control software on a computer and an industrial personal computer after connection, inputting various parameters of an automobile in a running condition simulation test on the software of the industrial personal computer, simulating the actual running resistance of the automobile, and loading the resistance on a shaft through a dynamometer which is coaxial with the traction motor; the rotating speed and the torque are calculated by using an automobile power balance equation; the speed-time diagram of the electric automobile can be converted into a rotating speed and torque-curve, the rotating speed curve of the motor is used as an accelerator reference command of the electric automobile, the torque curve is used as a load reference command, and then a working condition circulation program is carried out to obtain the rotating speed and torque of the motor and the voltage and current input to a motor controller under various working conditions; meanwhile, the input power of the motor can be obtained through calculation, the instantaneous efficiency of the motor at the moment is obtained by dividing the power of the dynamometer, namely the output power of the motor by the input power of the motor, and finally, the rotating speed, the torque and the corresponding efficiency are recorded to be used as a motor model database of the virtual motor dynamometer platform.
In this embodiment, the method for obtaining external characteristic data of the motor may further be obtained by using a traction motor simulation model, specifically, a motor controlled by sinusoidal pulse width vector is modeled and simulated by using Matlab or Simulink, and the model is simulated and analyzed by setting automobile parameters, so that the external characteristic data of the motor is finally obtained and recorded as a motor model database of the virtual motor power measuring platform.
Further, in this embodiment, the data module includes external characteristic data of the T790S02 type permanent magnet synchronous motor for the beijing E150 vehicle, and the external characteristic data of the T790S02 type permanent magnet synchronous motor is acquired by a traditional dynamometer platform experiment.
Specifically, the external characteristic data of the T790S02 type permanent magnet synchronous motor is obtained by a traditional dynamometer platform experiment: preparing a motor with a T790S02 model and a KM6025W06 controller, an S120 AC variable frequency motor of Siemens and an ACS800 variable frequency control system produced by ABB company on a working bench; wherein the rated power of the permanent magnet synchronous motor T790S02 for the vehicle is 20kw/3000rpm, and the peak power is 45kw/9000 rpm; the power supply battery pack is a C30DB power battery pack and is formed by connecting a plurality of 3.2V lithium iron phosphate batteries in series; the torquemeter and the power meter form an instrument detection system, are connected and controlled by control software on a computer and an industrial personal computer, input various parameters of the automobile in a running condition simulation test, simulate the actual running resistance of the automobile, execute a working condition circulation program, record the obtained rotating speed torque, corresponding input power, output power and instantaneous efficiency, and serve as a database file of a T790S02 model motor model of a virtual motor power measuring platform, as shown in figure 3.
Further, through the above, the virtual motor power measuring method based on LabVIEW provided by the invention comprises the following steps:
a user inputs automobile parameters needing power measurement to the platform and selects an external motor characteristic database file with a specified model;
the parameter module receives automobile parameters input by a user and transmits the automobile parameters to the operation detection module;
the operation detection module receives the automobile parameters, outputs operation results through equation operation, and sends the operation results to the data module;
the data module firstly calls a motor external characteristic database file of the type according to the motor type designated by a user, then acquires matched target external characteristic data from the motor external characteristic database file of the type according to an operation result, and transmits the target external characteristic data to the display module;
and the display module displays the received off-purpose characteristic data to a user.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The utility model provides a virtual motor measurement of power platform based on LabVIEW which characterized in that includes:
the parameter module is used for receiving and recording automobile parameters input by a user and transmitting the parameters to the operation detection module;
the operation detection module is used for performing operation on the parameters received from the parameter module, outputting an operation result and transmitting the operation result to the data module;
the data module comprises various kinds of external characteristic data of the motor, and the required external characteristic data of the appointed motor is called according to the selection of a user; after receiving the operation result, the data module matches corresponding target external characteristic data from the external characteristic data of the appointed motor according to the operation result and transmits the target external characteristic data to the display module;
and the display module is used for displaying the related information to the user.
2. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: the display module comprises an automobile parameter display module and a motor data display module.
3. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: the parameters of the parameter module comprise the mass of the whole vehicle, the windward area, the wind resistance coefficient, the rolling radius of the tire, the reduction ratio transmission efficiency, gradient parameters and reference speed.
4. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: the operation detection module receives the parameter data of the parameter module, and the operation result obtained by operation is the rotating speed and the torque required by the running of the whole vehicle.
5. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: the external characteristic data in the data module is obtained by recording the external characteristic data of the motor measured by a traditional power measuring platform or the external characteristic data obtained by a traction motor simulation model.
6. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: and the external characteristic data in the data module comprises the rotating speed, the torque, the input power, the output power and the efficiency of the tested motor.
7. The LabVIEW-based virtual motor dynamometer platform of claim 1, wherein: the external characteristic data in the data module comprise external characteristic data of a T790S02 type permanent magnet synchronous motor, and the external characteristic data of the T790S02 type permanent magnet synchronous motor are acquired through a traditional dynamometer platform experiment.
8. A virtual power measuring method based on LabVIEW is characterized by comprising the following steps:
a user inputs automobile parameters needing power measurement to the platform and selects an external motor characteristic database file with a specified model;
the parameter module receives automobile parameters input by a user and transmits the automobile parameters to the operation detection module;
the operation detection module receives the automobile parameters, outputs operation results through equation operation, and sends the operation results to the data module;
the data module firstly calls a motor external characteristic database file of the type according to the motor type designated by a user, then acquires matched target external characteristic data from the motor external characteristic database file of the type according to an operation result, and transmits the target external characteristic data to the display module;
and the display module displays the received off-purpose characteristic data to a user.
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| US20170270490A1 (en) * | 2011-04-22 | 2017-09-21 | Angel A. Penilla | Vehicles and Cloud Systems for Providing Recommendations to Vehicle users to Handle Alerts Associated with the Vehicle |
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