Transient air supply simulation system for automobile bench test and control method
A bench test, fan controller technology, applied in vehicle testing, machine/structural component testing, measuring devices, etc., can solve problems such as the inability to provide transient air supply for heat exchangers, and solve problems with large test errors. Effect
Active Publication Date: 2021-11-02
JILIN UNIV
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Problems solved by technology
[0007] In order to solve the problem that the transient air supply for the heat exchanger cannot provide the air intake of the heat exchanger in line with the driving conditions of the actual vehicle during the performance bench test of the automobile thermal management system in the prior art, the present invention provides a heat management system for automobiles. The transient air supply simulation system and control method of the system performance bench test realize the one-to-one correspondence between the air intake provided by the frequency conversion fan for the heat exchanger and the air intake at each moment when the vehicle is actually driving in the transient air supply mode. Guaranteed test precision and accuracy
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[0073] In order to clearly illustrate the construction process of the transient air supply simulation system and control method, it will be explained with examples:
[0074] The first step is to select the vehicle speed, AGS opening and fan speed as the control elements, where the vehicle speed range is [0kph, 120kph], the AGS opening range is [0°, 90°], and the fan speed is [0r / min ,3000r / min].
[0075] The second step is to calculate the number of required sample plans according to the empirical formula. In this case, in order to ensure the accuracy of the results and save calculation costs, the number of samples is set to 11.
[0076] The third step is to apply the Latin hypercube method to design sample schemes through isight software, and obtain a list of sample schemes, that is, schemes for different vehicle speeds, AGS openings, and fan speeds.
[0077] Sample No. AGS opening (°) Fan speed(r / min) Vehicle speed(km / h) 1 0 2100 24 2 9 3000 12...
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The invention discloses a transient air supply simulation system for an automobile bench test and a control method. The automobile speed, the AGS opening degree and the fan rotating speed are set as control elements, and a matching scheme of different automobile speeds, AGS opening degrees and fan rotating speeds is determined; according to the matching scheme of different automobile speeds, AGS opening degrees and fan rotating speeds, an agent model among the heat exchanger air inlet amount, the automobile speeds, the AGS opening degrees and the fan rotating speeds is established through simulation calculation; temperature information of a to-be-tested component is collected, AGS opening and fan rotating speed data are obtained according to a preset control strategy of a to-be-tested automobile type thermal management system and are input to an agent model among the heat exchanger air inlet amount, the automobile speed, the AGS opening and the fan rotating speed, the required heat exchanger air inlet amount is calculated at each moment and is sent to a fan controller, and a variable-frequency fan is further controlled to output corresponding air volume. In a transient air supply mode, the air inlet amount provided for a heat exchanger by the variable-frequency fan is in one-to-one correspondence with the air inlet amount at each moment in the actual running condition of an automobile.
Description
technical field [0001] The present invention relates to a transient air supply simulation system and control method for automobile bench testing, in particular to a transient air supply simulation system and control method for automobile thermal management system performance bench testing, belonging to automobile thermal Management system bench test technical field. Background technique [0002] The performance of the vehicle thermal management system directly affects the power, economy and safety of the vehicle. A high-quality thermal management system can ensure that the components in the system operate within a reasonable temperature range and the comfort of the occupants with less energy consumption. . With the rapid development of new energy vehicles, the number of models with different power source models is gradually increasing, and the thermal management system has become extremely complex. In order to ensure the development of a thermal management system with high...
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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 闵海涛付宇
Owner JILIN UNIV
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