CN102297765A - Hardware-in-loop simulation test bed for external characteristics of direct current converter - Google Patents
Hardware-in-loop simulation test bed for external characteristics of direct current converter Download PDFInfo
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- CN102297765A CN102297765A CN2011101284882A CN201110128488A CN102297765A CN 102297765 A CN102297765 A CN 102297765A CN 2011101284882 A CN2011101284882 A CN 2011101284882A CN 201110128488 A CN201110128488 A CN 201110128488A CN 102297765 A CN102297765 A CN 102297765A
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Abstract
The invention discloses a hardware-in-loop simulation test bed for external characteristics of a direct current converter, which comprises a vehicle power assembly simulation model, a hardware part and a software part, wherein a hybrid vehicle power assembly simulation model is used for simulating a working condition of a power assembly of an engine, a motor and a transmission shaft; the hardware part comprises a host machine, a target machine and a PEU (Power Electronic Unit); and the software part comprises a signal generator plate card and a signal acquiring plate card. The hardware-in-loop simulation test bed can be used for on-line testing a developed functional module, finding out problems in time and on-line improving till the function meets a demand. Compared with a traditional modeling-code generating-integrating-testing-improving developing method, the hardware-in-loop simulation test bed provided by the invention has the advantages that mature degree at initial stage of software development is greatly improved, DC/DC (Direct Current) software developing efficiency is promoted, developing period is shortened and developing risk and cost are reduced.
Description
Technical field
The present invention relates to a kind of emulation experiment platform, be specifically related to a kind of emulation experiment platform that is used for DC converter.
Background technology
New-energy automobile DC converter (DC/DC) relates to multidisciplinary fields such as high voltage control and low voltage control, its work operating mode is very complicated, and it is high to security requirement, brought the complicacy of its Control System Design thus: design from system architecture, the exploitation of individual feature, test, to integrated, system testing of software and demarcation, need a long-term process.The vehicle-mounted DC/DC business development of present domestic new-energy automobile still is in the starting stage, lacks the associated core technology, and the development Experience wretched insufficiency and has very large gap abroad.Early stage in the exploitation of DC/DC control system, generally to lean on a large amount of high-pottings to grope control law, not only need expend great amount of manpower and material resources, the construction cycle is also very long, and relates to high pressure, and is abnormally dangerous, easily damaged device.For the DC/DC functional development, because its function is very complicated and the development Experience deficiency, tends to cause concept development to have defective, thereby cause the frequent upgrading of software, reduced software development quality and efficient, strengthened cost of development.
Can be the DC/DC exploitation based on the hardware of vehicle dynamic model in the ring real-Time Simulation Test virtual vehicle development environment is provided, the online development﹠ testing, special operation condition test even the software coupling that can be used for control strategy, can improve software development quality and efficient greatly, reduce the construction cycle, reduce development risk and cost.The hardware that is not useful at present new-energy automobile DC/DC exploitation as yet is in the ring real-Time Simulation Test.
Summary of the invention
Technical matters to be solved by this invention provides a kind of DC converter external characteristics hardware-in-loop simulation testing table, it can provide a virtual vehicle development environment for the DC/DC exploitation, the online development﹠ testing, special operation condition test even the software coupling that can be used for control strategy, can improve software development quality and efficient greatly, reduce the construction cycle, reduce development risk and cost.
In order to solve above technical matters, the invention provides a kind of DC converter external characteristics hardware-in-loop simulation testing table; It is characterized in that, comprising: automobile power assembly realistic model, hardware components and soft or hard interface section; Power assembly duties such as described motor vehicle driven by mixed power power assembly realistic model simulated engine, motor, transmission shaft; Hardware components comprises host, target machine, motor electronic control module PEU; Interface between software and hardware comprises signal generator integrated circuit board and signals collecting integrated circuit board.
Beneficial effect of the present invention is: on this DC/DC virtual vehicle development environment, can carry out on-line testing to the functional module of being developed, in time pinpoint the problems and online the improvement, meet the demands up to function, traditional relatively modeling-code generation-integrated-test-improved development approach can improve the degree of ripeness at software development initial stage greatly, improves the DC/DC software development efficiency, reduce the construction cycle, reduce development risk and cost.
Description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is a DC/DC emulation module system chart;
Fig. 2 is the DC/DC electric characteristic figure;
Fig. 3 is the hot realistic model synoptic diagram of DC/DC;
Fig. 4 is a DC/DC A-battery realistic model synoptic diagram.
Embodiment
The invention provides a kind of real-Time Simulation Test that is used for the quick development﹠ testing of the vehicle-mounted DC/DC controller of new-energy automobile: this simulation test stand is based on the Labcar platform environment, comprise DC/DC model and A-battery model, realize PEU and HCU/VCU real-time communication, have the real-time simulation of complete virtual power assembly PEU closed loop and the quick development system of virtual voltage current feedback.
DC/DC controller hardware of the present invention is in the ring real-Time Simulation Test, it is made up of new-energy automobile vehicle engine assembly realistic model, hardware components and soft or hard interface section, and DC/DC hardware and steering logic and car load kinematic train model are combined closely.Power assembly duties such as motor vehicle driven by mixed power power assembly realistic model simulated engine, motor, transmission shaft; Hardware components comprises host, target machine, motor electronic control module PEU etc.; Interface between software and hardware comprises various signal generator integrated circuit boards and signals collecting integrated circuit board.The vehicle engine assembly realistic model is developed on host, download to real time execution in the target machine by Labcar EE software and Ethernet, the coherent signal that model calculation goes out is sent to the signal generator integrated circuit board by network, produce the actual physical electric signal and deliver to PEU, PEU is by gathering these signals, receive the CAN communication information that HCU/VCU sends simultaneously, according to the steering logic control electric current and voltage modulation value of its inside.PEU, DC/DC power model and HCU/VCU have just constituted a closed-loop system like this.
The motor vehicle driven by mixed power power assembly realistic model of being set up comprises motor model, DC/DC model, Full Vehicle Dynamics model etc., is used for the duty of emulation motor, DC/DC and vehicle.The motor Real-Time Model adopts Labcar PT system to come modeling, dispose according to real engine, the model correlation parameter is configured and HCU/VCU controller formation virtual engine analogue system, for the DC/DC model provides the electric current and voltage input signal close with real vehicle.
With the system chart of DC/DC emulation module shown in the accompanying drawing 1.The realistic model of DC/DC can be divided into three parts:
Closed-loop control part: UZKHvSoll_DO and ULvZKSoll_DO mainly are responsible for the closed-loop control of DC/DC electric current and voltage;
Temperature model part: Converter_ThermoDyn mainly is responsible for the protection of DC/DC monitoring temperature and falls power control;
Low-voltage load model: Conver_Loads, the low-voltage load of mainly being responsible for the DC/DC output terminal calculates and feedback;
With the electric external characteristics synoptic diagram of DC/DC shown in the accompanying drawing 2 is analytic target, carries out modeling analysis.DC/DC has 3 active sections:
Constant voltage control section: (A
X ', A
y) to (B
X ', B
y), DC/DC is overload not, and its output voltage is controlled;
Permanent power control section: (B
X ', B
y) to (C
X ', C
y), the DC/DC overload can't be operated in voltage mode control, can only reduce voltage, the output maximum current.Show as permanent power control;
Constant current control section: (C
X ', C
y) to (D
X ', D
y), DC/DC overload, the maximum current that its output allows.If can not reach the output level weighing apparatus, its output voltage can continue to descend, and reports an error up to being lower than limit value;
The hot realistic model of DC/DC as shown in Figure 3 carries out modeling analysis.The temperature that the temperature of DC/DC can be approximately equal to the DC/DC cooled plate adds the temperature variation that DC/DC is current.Wherein, the temperature of cooled plate is exactly the temperature (when doing closed-loop experiment, can manually be provided with) of DC/DC module water-cooled; Current temperature variation equals the current power attenuation of DC/DC and multiply by a temperature coefficient, and this temperature coefficient is the coefficient of DC/DC module heat dissipating coefficient and ambient temperature.
With the realistic model of DC/DC A-battery shown in the accompanying drawing 4, carry out modeling analysis.DC/DC can equivalence be a constant pressure source (when being operated in the Control of Voltage section) or be constant current source (being operated in the Current Control section) and a module internal resistance; A-battery can equivalence be an internal resistance of cell and a big electric capacity; Other vehicle-mounted low-voltage loads are all thought resistance characteristic, and equivalence is a big resistance.Because A-battery is divided into the charging and the two kinds of mode of operations of discharging, need to divide the consideration of coming:
The A-battery charging: battery is as load, and its current direction as shown in Figure 4.At this moment, A-battery and low-voltage load are together as the load of DC/DC;
The A-battery discharge: battery is as power supply, and its current direction as shown in Figure 4.When low-voltage load fluctuateed, battery can improve the step transient response of DC/DC as power supply;
Through above step, just can set up the vehicle-mounted DC/DC hardware of new-energy automobile in the ring real-Time Simulation Test, can be used for the PEU development﹠ testing, accelerate development efficiency, lower development risk and cost.
This DC/DC hardware has the following advantages in the ring real-Time Simulation Test:
Perfect PEU hardware-in-loop simulation platform.Not only comprised the DC/DC hardware-in-loop simulation, but also comprised the Inverter hardware-in-loop simulation, can be than the duty of real simulated new-energy automobile power assembly, electric current and voltage or the moment of torsion input that approaches real vehicles is provided for Inverter and Converter model, HCU/VCU and PEU can carry out real-time CAN communication simultaneously, identical with the course of work of PEU on real vehicle, constituted the virtual vehicle PEU exploitation emulation platform that approaches real vehicle.
DC/DC functional development and test.On this DC/DC virtual vehicle development environment, can carry out on-line testing to the functional module of being developed, in time pinpoint the problems and online the improvement, meet the demands up to function, traditional relatively modeling-code generation-integrated-test-improved development approach, can improve the degree of ripeness at software development initial stage greatly, improve the DC/DC software development efficiency.
Special operation condition simulation and test.Except can carrying out the conventionally test, the special operation condition that is difficult for carrying out on real vehicle also can simulate and test easily, and as the simulation and the test of fault operating mode, limiting condition and complicated road environment, test is free from risk, and can greatly improve test safety and efficient.
Software is demarcated in advance.Utilize testing table can carry out DC/DC software and demarcate in advance, reduce to mate cost, improve matching efficiency.
DC/DC issues automatic test.On this platform, application Labcar Automation testing software can carry out DC/DC and criticize antenatal hardware, software automatic test and durable test etc., can greatly improve testing efficiency, reduces testing cost, shortens the DC/DC construction cycle.
The present invention adopts system modelling software Simul ink to develop the DC/DC system simulation model.Simulink provides the modeling pattern of module level, and the modeling efficiency height has multiple common component module model, and for the electric current and voltage closed loop, complication system modelings such as electric capacity have good resolution ability.
To modeling procedure shown in Figure 4, just can set up the vehicle-mounted DC/DC hardware of new-energy automobile through Fig. 1 in the ring real-Time Simulation Test.This system can be used for DC/DC functional module exploitation and checking fast, simulation of DC/DC special operation condition and test, the software matched data is default, fermentation such as DC/DC software and hardware issue automatic test, can improve DC/DC system development efficient greatly, reducing cost of development, is to carry out DC/DC system a kind of effective means of exploitation fast.
The present invention is not limited to embodiment discussed above.More than the description of embodiment is intended in order to describe and illustrate the technical scheme that the present invention relates to.Based on the conspicuous conversion of the present invention enlightenment or substitute and also should be considered to fall into protection scope of the present invention.Above embodiment is used for disclosing best implementation method of the present invention, so that those of ordinary skill in the art can use numerous embodiments of the present invention and multiple alternative reaches purpose of the present invention.
Claims (7)
1. DC converter external characteristics hardware-in-loop simulation testing table; It is characterized in that, comprising: automobile power assembly realistic model, hardware components and soft or hard interface section;
Described motor vehicle driven by mixed power power assembly realistic model simulated engine, motor, transmission shaft power assembly duty;
Hardware components comprises host, target machine, motor electronic control module PEU;
Interface between software and hardware comprises signal generator integrated circuit board and signals collecting integrated circuit board.
2. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1, it is characterized in that, described vehicle engine assembly realistic model is developed on host, real time execution in target machine, the coherent signal that model calculation goes out is sent to the signal generator integrated circuit board by network, produce the actual physical electric signal and deliver to motor electronic control module PEU, motor electronic control module PEU is by gathering these signals, receive the CAN communication information that entire car controller HCU/ vehicle control device VCU sends simultaneously, according to the steering logic control electric current and voltage modulation value of its inside.
3. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1 is characterized in that described motor vehicle driven by mixed power power assembly realistic model comprises motor model, DC/DC model, Full Vehicle Dynamics model.
4. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1 is characterized in that the realistic model of DC/DC is divided into three parts:
The closed-loop control part mainly is responsible for the closed-loop control of DC/DC electric current and voltage;
The temperature model part mainly is responsible for the protection of DC/DC monitoring temperature and is fallen power control;
The low-voltage load model, the low-voltage load of mainly being responsible for the DC/DC output terminal calculates and feedback.
5. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1 is characterized in that the electric external characteristics of DC/DC has 3 active sections:
The constant voltage control section, DC/DC is overload not, and its output voltage is controlled;
Permanent power control section, the DC/DC overload can't be operated in voltage mode control, can only reduce voltage, and the output maximum current shows as permanent power control;
The constant current control section, the DC/DC overload, the maximum current that its output allows, if can not reach the output level weighing apparatus, its output voltage can continue to descend, and reports an error up to being lower than limit value.
6. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1, it is characterized in that, DC/DC equivalence when being operated in the Control of Voltage section is a constant pressure source and a module internal resistance, or equivalence is a constant current source and a module internal resistance when being operated in the Current Control section; The A-battery equivalence is an internal resistance of cell and an electric capacity; Other vehicle-mounted low-voltage loads all equivalence are a resistance.
7. DC converter external characteristics hardware-in-loop simulation testing table as claimed in claim 1 is characterized in that, A-battery is divided into the charging and the two kinds of mode of operations of discharging:
A-battery when charging battery is as load, and A-battery and low-voltage load are together as the load of DC/DC;
Battery is as power supply during the A-battery discharge, and when low-voltage load fluctuateed, battery can improve the step transient response of DC/DC as power supply.
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| CN106155038A (en) * | 2015-04-24 | 2016-11-23 | 天津普正动力科技有限公司 | A kind of hardware in loop detecting system for hybrid vehicle |
| CN111064628A (en) * | 2018-10-16 | 2020-04-24 | 联合汽车电子有限公司 | CAN bus automatic test system |
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| CN114061982A (en) * | 2021-12-10 | 2022-02-18 | 中国第一汽车股份有限公司 | Vehicle testing method, device and system and storage medium |
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Application publication date: 20111228 |