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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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 con

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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[0030] In order to make the above objectives, features and advantages of the invention more obvious and understandable, the following is attached figure 1 And figure 2 The specific embodiments of the present invention will be described in detail.

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

[0032] The first step: get the temperature S1 in the car;

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

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

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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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