A control method of automobile heat pump air conditioner

Abstract

The invention discloses a control method of automobile heat pump air conditioner, which comprises the following steps: 1. After the parameters of the evaporator are normalized, inputting the parametersinto a first BP neural network to obtain the degree of superheat Delta Te of the outlet of the evaporator, the heat exchange quantity Qe of the evaporator and the heat exchange quantity Qair of the air side of the evaporator; At that same time, normalizing and inputting the parameter of the condenser into the second BP neural network to obtain the degree of subcooling Delta Tc of the condenser outlet, the heat exchange quantity Qc of the condenser and the heat exchange quantity Qair, c of the air side of the condenser; 2, calculating the heat exchange Delta Q of the heat pump air conditionerto be adjusted; 3, making clustering analysis of the heat exchange Qneed which the heat pump air condition system needs to provide to the occupant cabin, the air side heat transfer Qair of evaporatorand the heat transfer delta Q of heat pump air conditioning system, the total power of heat pump air conditioning system is minimized by adjusting the opening of electronic expansion valve, the duty ratio of cooling fan outside the vehicle, the duty ratio of cooling fan inside the vehicle and the rotational speed of compressor. The control method of the automobile heat pump air conditioner provided by the invention has the advantages of fast response speed and good control of energy consumption.

Description

technical field [0001] The invention belongs to the technical field of automobile heat pump air conditioner control, in particular to a method for controlling the automobile heat pump air conditioner. Background technique [0002] At present, the development trend of lightweight, compact, intelligent and energy-saving automotive air conditioners is obvious. With the popularization of automatic air-conditioning in the field of automotive air-conditioning, drivers no longer need to manually adjust the temperature of the passenger compartment to meet the comfort requirements of the driver and passengers. The driver only needs to set the target temperature of the cockpit, and the air conditioning control system will automatically adjust to make the temperature of the cockpit consistent with the target temperature. The automotive air conditioning control system mainly adjusts the temperature of the cockpit by controlling the speed of the compressor, the speed of the cooling fan,...

AI Technical Summary

Problems solved by technology

[0004] As far as the current automotive air-conditioning control systems are concerned, most of them use PID control, which cannot meet the requirements of the automotive air-conditioning system, which is a system with nonlinear, time-varying and dynamic parameter changes.

As a result, the automotive air conditioner cannot respond in a timely manner to adjust the comfort of the passenger compartment, with strong hysteresis and slow dynamic response.

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