CN204789939U - New energy automobile motor capability test analytic system - Google Patents

Abstract

The utility model discloses a new energy automobile motor performance test and analysis system, which includes a torque meter for detecting the output torque and rotational speed of the motor under test; and a dynamometer, the input end of the dynamometer is connected to the output end of the torque meter; and A real-time monitoring module that monitors and controls the dynamometer in real time, the real-time monitoring module is connected to the output end of the dynamometer; and a main control unit that issues control commands according to the monitoring data provided by the real-time monitoring module, The main control machine is electrically connected with the real-time monitoring module; and a power analyzer is electrically connected with the main control machine. The utility model has the advantage of high intelligence degree.

Description

A new energy vehicle motor performance test and analysis system

technical field

The utility model relates to a new energy vehicle motor performance test and analysis system.

Background technique

The technical fields involved in the modern automobile industry are so extensive that many theoretical issues have not been fully studied and resolved. In order to ensure the performance and quality of automotive products, the automotive industry pays special attention to and emphasizes experimental research. The important data and parameters obtained in the test are the basis for formulating the specifications and standards of the automobile industry, and are also an important basis for the national automobile industry management departments, such as transportation and public security departments, to formulate various management systems. The development history of the automobile industry in advanced automobile industrial countries shows that the development of the automobile industry largely depends on the development of experimental technology. The important embodiment of the development of test technology is the technical level of test equipment.

The production of automobile test equipment is characterized by diversity and complexity. Due to the wide variety of automobiles and different standards, the test equipment must correspond individually; at the same time, due to the different test purposes, the test equipment must also be different. In terms of test methods, it can be divided into three categories: (1) system bench test or unit test, (2) real vehicle road test, and (3) simulation test. These test methods can be used to test and detect the whole vehicle and auto parts. The main test contents are:

Vehicle performance test: For the vehicle test, it is mainly a performance test. Automobile performance test is a test conducted to determine the basic performance of automobiles. It mainly includes the following tests: (1) Power performance test; that is, the actual test of the maximum speed, acceleration and climbing performance of the car. (2) Fuel economy test; usually a road test or a car dynamometer (that is, a drum test bench) test. (3) Braking performance test; evaluate the braking performance and the stability of the braking performance. (4) Handling stability test; there are many types of tests, such as using the turning braking test to evaluate the stability of the driving direction of the car when braking on a curve, etc. (5) Ride comfort (riding comfort) test; the evaluation method is usually determined according to the human body's physiological perception of vibration and the degree of integrity of the cargo. (6) Passability test: This test is generally carried out on the automobile proving ground and special road sections. (7) Safety test: There are many safety test items, and the cost is huge, especially the collision safety test.

Auto parts testing: Although there are many types of auto parts, the tests are usually performance, strength, durability, etc. For example, the performance tests of the engine mainly include power, idle speed, idling characteristics, load characteristics, speed regulation characteristics, starting, mechanical efficiency, multi-cylinder work uniformity, emission and noise tests; Gear feel and vibration and noise tests. On this basis, it shows the phenomena of friction, wear, lubrication, vibration and noise of auto parts.

Contents of the invention

In view of the above technical problems, the utility model provides a new energy vehicle motor performance test and analysis system with high intelligence.

The technical scheme that realizes the utility model purpose is as follows:

A new energy vehicle motor performance test and analysis system, including a torque meter for detecting the output torque and speed of the motor under test; and

a dynamometer with the input connected to the output of the torque meter; and

A real-time monitoring module for real-time monitoring and control of the dynamometer, the real-time monitoring module is connected to the output end of the dynamometer; and

According to the monitoring data provided by the real-time monitoring module, the main control machine is electrically connected to the real-time monitoring module to issue control commands; and

A power analyzer, the power analyzer is electromechanically connected with the main control.

Preferably, a reducer is also included, the input end of the reducer is connected to the output end of the torque meter, and the output end of the reducer is connected to the input end of the dynamometer.

Preferably, the host computer includes a CPU and a multi-function data acquisition card and a high-precision flexible digital multimeter card electrically connected to the CPU.

Preferably, the real-time monitoring module includes a controller, a load loading unit, a torque detection unit and a rotational speed detection unit, and the load loading unit, the torque detection unit and the rotational speed detection unit are respectively electrically connected to the controller.

Preferably, the real-time monitoring module further includes an emergency stop unit electrically connected to the controller.

Preferably, the real-time monitoring module further includes a switch unit electrically connected to the controller.

Preferably, a temperature detection module is also included, and the output end of the temperature detection module is electrically connected with the main control.

The working process of the utility model is as follows: convert the alternating current of the power grid into direct current, connect it to the controller of the motor under test, supply power to the motor under test, and have the function of energy feedback back to the AC power grid. The output shaft of the motor under test is connected to a torque meter to detect the output torque and speed in real time. The load of the motor under test is simulated by the dynamometer, and communicates with the host computer through the CAN bus to realize load adjustment. The parameters to be measured of the motor and the controller are detected by corresponding sensors, and at the same time, a dedicated power analyzer is used to directly detect and analyze the power, voltage, current, power factor, phase angle and other parameters of the motor under test, and the final results are displayed and transmitted to the host computer; the high-precision data acquisition card collects the sensor signal, and analyzes and displays it through the configuration software of the upper computer. Through the graphical programming environment and operation interface, the functions of signal conditioning, process control, data acquisition, analysis, display and storage, fault diagnosis and intelligent testing of the object to be tested are completed; at the same time, standardized software and hardware modules are used to test the compatibility of the system Performance and scalability have also been greatly enhanced. The motor performance test system uses National Instruments' LabVIEW and LabVIEWRT virtual instrument software platforms, as well as supporting NIPCI data acquisition boards, NISCXI signal conditioning equipment and NIcompactFieldPoint (cFP) distributed I/O real-time system hardware. It realizes the parallel test of the performance of multi-channel electric tools; and can automatically complete the real-time monitoring of load, torque, speed, power and body temperature according to the user's settings; finally, the remote sharing of test data is realized through the TCP/IP protocol. Remote control of the test system. The system has the characteristics of short development period, high efficiency and low cost, and has strong system scalability and reusability, and has strong application value.

The utility model provides two types of work modes, that is, an automatic work mode and a manual work mode. In the automatic working mode, the master computer first waits for the user to complete the setting and configuration of software and hardware. Then the user is asked to choose load test or fixed parameter test. Under load test, the user needs to set test parameters such as load curve, load time, cycle time and test time; under fixed parameter test, the user can choose to specify torque, speed or power, and set Corresponding calibration parameters, control parameters and test time. After the above steps are completed, the test program can be started, and the test system will automatically load the load specified by the user and simultaneously complete the performance test of the motor to be tested; Test the motor for automatic testing. While the system is running, the user can observe the waveform display of each index parameter versus time in the real-time monitoring chart, obtain the motor characteristic curve after curve fitting, and export the chart of interest to the disk. When the test time is completed, the system automatically terminates the test.

In the manual working mode, the working principle of the system is basically similar to that in the automatic working mode, except that the system does not perform cyclic testing, but provides an interactive testing environment. After completing the specified testing items, it waits for further operations by the user.

Description of drawings

Fig. 1 is the structural representation of a kind of new energy automobile motor performance test and analysis system of the present utility model;

Figure 2 is a schematic structural diagram of the real-time monitoring module.

Detailed ways

As shown in Fig. 1, a kind of new energy automobile motor performance test and analysis system of the present utility model includes the torque meter 1 that detects the output torque and the rotating speed of the motor 8 under test, a dynamometer 2, a real-time monitoring module 3, and a main control machine 4 , a power analyzer 5, a reducer 6, and a temperature detection module 7.

The input end of the dynamometer 2 is connected to the output end of the torque meter 1 . In this embodiment, an electric dynamometer is selected, which is easy to control, high in accuracy, high in rated power, and small in size. The maximum torque is 310N.m, and the maximum speed is 10000rpm.

The real-time monitoring module 3 monitors and controls the dynamometer 2 in real time, and the real-time monitoring module 3 is connected to the output end of the dynamometer. The real-time monitoring module 3 communicates with the main control computer through the CAN protocol, obtains control parameter commands from the main control computer 4 to control the dynamometer, and returns the data signal collected from the dynamometer module, which is handed over to the main control computer 4 for processing. Real-time monitoring module 3 comprises controller 31, load loading unit 32, torque detection unit 33, speed detection unit 34, emergency stop unit 35 and switch unit 36, load loading unit 32, torque detection unit 33, speed detection unit 34, emergency stop The unit 35 and the switch unit 36 are respectively electrically connected to the controller 31 .

Real-time monitoring module 3 selects NIcFP distributed I/O real-time system. As an industrial-grade control system, cFP has FIFO data queue, power-off data cache, watchdog status monitoring and high impact resistance and noise immunity, and is used to complete the core real-time acquisition and control part of the system.

The cFP-2020 module is used as the real-time system controller 31. The controller is embedded with a microprocessor, 32MDRAM and 256MFlash flash memory chips, and supports the LabVIEW Real-Time real-time module. This module can be separated from the LabVIEW programming environment and run independently in real time. The application program in the controller memory, and the network sharing of test data is realized through the embedded 10/100BaseTX Ethernet interface of the controller.

The cFPAO-210 module is used as the load loading unit 32 to provide a loading signal for the dynamometer 2 to increase or decrease the load on the motor to be tested, so as to control the motor under a certain load. The cFPAI-210 module is used as the torque detection unit 33, which is used to collect the voltage signal corresponding to the torque of the motor under test output by the sensor device of the dynamometer 2, and measure the actual torque of the motor under test. The cFP-CTR-502 module is used as the rotation speed detection unit 34, which is used to collect the TTL level signal corresponding to the rotation speed of the motor under test output by the dynamometer sensor device, and measure the actual rotation speed of the motor under test. The cFPDI-330 is used as the emergency stop unit 35, which is used to respond to the emergency stop switch, shut down the system in an emergency, and prevent accidents from happening. The cFPDO-403 is used as the switch unit 36, which is used to control the solid-state relay SSR connected with each motor to be tested, so as to realize the closing or breaking of the working circuit by the system.

The main control machine 4 issues control commands according to the monitoring data provided by the real-time monitoring module 3, and the main control machine is electrically connected with the real-time monitoring module. The main control machine 4 is also used to provide a graphical user interface, complete the configuration of the system hardware and the setting of the user interface and control parameters, and update the waveform display of each index parameter versus time in real time, and obtain the motor characteristic curve after curve fitting , and finally complete the recording of test data. At the same time, the main control computer also completes the measurement of non-control parameters, such as input voltage, operating current, temperature and other parameters, through the embedded NI-PCI data acquisition card.

The main control machine 4 includes a CPU and a multi-function data acquisition card and a high-precision flexible digital multimeter card electrically connected to the CPU respectively. The main control machine 4 also includes a touch screen, which is used to control settings and display various parameters to the CPU. and waveform display. The main control computer 4 is an industrial computer from Advantech, embedded with an Intel Pentium 42.6 GCPU, a NIPCI-6052 multi-function data acquisition card and a NIPCI-4070 high-precision flexible digital multimeter card. PCI-6052 multi-function data acquisition card is equipped with 4 NISCXI-1120 signal conditioning cards and matching NISCXI-1327 attenuation terminals, which are used to collect the input signals of the operating voltage and operating current of multiple motors to be tested; NIPCI-4070 high-precision The flexible digital multimeter card is equipped with a NISCXI-1127 multi-channel switch card and a matching NISCXI-1331 multi-channel terminal, which are used to scan the rotor windings of the multi-channel motor to be tested, and then measure the internal rotor temperature of the motor according to the corresponding algorithm.

The power analyzer 5 is connected with the main control electromechanical. The power analyzer 5 selects a special power analyzer from Fluke, and transmits the analysis data to the upper computer system for display and storage in real time through serial communication.

The input end of the reducer 6 is connected to the output end of the torque meter, and the output end of the reducer 6 is connected to the input end of the dynamometer 2 . The speed reducer 6 is used to reduce the output speed of the motor and output it to the dynamometer to protect the dynamometer.

The output end of the temperature detection module 7 is electrically connected with the main control machine 1 . The temperature detection module 7 selects NIcFP distributed I/O real-time system. The cFP-2020 controller is used, equipped with 4 cFPTC-1208 channel thermocouple modules, which can be directly used to measure standard J, K, T, N, R, S, E and B thermocouples and provide corresponding signals Conditioning, double insulation isolation, input noise filtering, cold junction compensation, and temperature algorithms for various hot couples, used to implement front-end data sampling at the working end of the motor, and use distributed I/O based on TCP/IP protocol network sharing function The realization of remote sharing of data is conducive to the implementation of remote real-time monitoring of industrial sites.

Claims (7)

1. a New energy automobile motor performance test analysis system, is characterized in that: comprise the torque gauge detecting tested motor output torque and rotating speed; And

Dynamometer machine, the input end of this dynamometer machine is connected to the output terminal of torque gauge; And

Monitor in real time dynamometer machine and the real-time monitoring module controlled dynamometer machine, this real-time monitoring module is connected to the output terminal of dynamometer machine; And

The monitor data provided according to real-time monitoring module is to send the main control computer of control command, and this main control computer is electrically connected with real-time monitoring module; And

Power analyzer, this power analyzer is electrically connected with main control computer.

2. a kind of New energy automobile motor performance test analysis system according to claim 1, it is characterized in that, also comprise speed reduction unit, the input end of this speed reduction unit is connected to the output terminal of torque gauge, and the output terminal of speed reduction unit is connected to the input end of dynamometer machine.

3. a kind of New energy automobile motor performance test analysis system according to claim 1, is characterized in that, main control computer comprises CPU and the multifunctional data acquisition card be electrically connected with this CPU respectively and high precision flexible digital multimeter card.

4. a kind of New energy automobile motor performance test analysis system according to claim 1, it is characterized in that, real-time monitoring module comprises controller, load loading unit, torque detecting unit and rotation speed detection unit, and load loading unit, torque detecting unit and rotation speed detection unit are electrically connected with controller respectively.

5. a kind of New energy automobile motor performance test analysis system according to claim 4, it is characterized in that, real-time monitoring module also comprises the urgency be electrically connected with controller and stops unit.

6. a kind of New energy automobile motor performance test analysis system according to claim 4, it is characterized in that, real-time monitoring module also comprises the switch element be electrically connected with controller.

7. a kind of New energy automobile motor performance test analysis system according to claim 1, it is characterized in that, also comprise temperature detecting module, the output terminal of this temperature detecting module is electrically connected with main control computer.