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Pure electric car air conditioning compressor control method and system based on fuzzy control

A technology for air-conditioning compressors and pure electric vehicles, which is applied in pump control, machines/engines, mechanical equipment, etc. It can solve the problems that the air-conditioning system of pure electric vehicles cannot realize frequency conversion control of compressors, so as to save power and extend driving range Effect

Active Publication Date: 2013-06-12
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the air-conditioning system of pure electric vehicles cannot realize the frequency conversion control of the compressor, and provides a control method and system for the air-conditioning compressor of pure electric vehicles based on fuzzy control

Method used

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  • Pure electric car air conditioning compressor control method and system based on fuzzy control
  • Pure electric car air conditioning compressor control method and system based on fuzzy control
  • Pure electric car air conditioning compressor control method and system based on fuzzy control

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Embodiment Construction

[0030] In order to make the above-mentioned purposes, features and advantages of the invention more obvious and understandable, the following in conjunction with the attached figure 1 And attached figure 2 The specific embodiment of the present invention will be described in detail.

[0031] figure 1 Shows the flow chart of the fuzzy control-based pure electric vehicle air-conditioning compressor control method according to the present invention, as figure 1 As shown, the fuzzy control-based pure electric vehicle air-conditioning compressor control method includes the following steps:

[0032] Step 1: Get the temperature S1 inside the car;

[0033] The second step: according to the temperature in the car, calculate the measured value of the temperature difference between the temperature in the car and the set temperature, and use it as an input parameter S2 of the fuzzy control;

[0034] The third step: when the measured value of the temperature difference is within the f...

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Abstract

The invention discloses a pure electric car air conditioning compressor control method and system based on fuzzy control. The control method comprises the following steps of obtaining a temperature in a car; calculating the measurement value of the temperature difference between the temperature in the car and a setting temperature according to the temperature in the car; when the measurement value of the temperature difference is in a first temperature difference range, calculating the measurement value of the temperature difference change rate between the temperature in the car and the setting temperature; respectively quantizing the two measurement values, obtaining conversion values of the temperature difference and the temperature difference change rate in the corresponding theory field; and then combining the preset fuzzy control rule, calculating and outputting the fuzzy control coefficient; calculating the working rotational speed of an air conditioning compressor according to the fuzzy control coefficient, and controlling the air conditioning compressor to run according to the working rotational speed. According to the method and the system provided by the invention, by adopting the compressor variable frequency control principle, the rotational speed of the compressor can be changed to a certain corresponding trend according to the change of the temperature in the car, so tat the comfort of drivers and passengers can be met to the utmost extent; and compared with the current fixed frequency control, the electricity quantity of a battery pack can be saved, and the continuous driving range of a pure electric car can be effectively prolonged.

Description

technical field [0001] The invention relates to the control technology of electric air conditioner compressors, in particular to a control method and system for pure electric vehicle air conditioner compressors based on fuzzy control. Background technique [0002] With the continuous consumption of energy and the increasingly severe greenhouse effect, many automobile companies around the world are investing more energy in the research and development of electric vehicles. Pure electric vehicle technology is considered to be one of the important trends in the development of electric vehicles in the future. [0003] Since pure electric vehicles use electric air-conditioning systems, traditional electric air-conditioners use the principle of fixed-frequency control. Fixed-frequency control means that the compressor works at a fixed speed and has no temperature setting function. The temperature adjustment in cooling mode can only be adjusted by the speed of the blower. When the ...

Claims

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Application Information

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IPC IPC(8): F04B49/06
Inventor 程剑峰
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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