Automobile air conditioning control data generation and automatic control method based on hvac system

Abstract

The invention discloses an air conditioner control data generation and automatic control method based on an HVAC system. Air conditioner HVAC assembly temperature linear test data are obtained, only temperature air door control data useful for the comfort automatic control algorithm are extracted from the test data, and then mode air door control data are obtained according to influences on the human body comfort from the air conditioner air outlet temperature; the temperature and mode air door comfort control data are input into a controller, the controller is used for automatically controlling the aperture of a temperature air door and a mode air door on the HVAC assembly, calibration and correction are conducted according to the real car road, and accordingly rapid whole car comfort calibration is achieved. According to the provided control algorithm, automatic control data are obtained on the basis of temperature linear data in the HVAC inherent characteristic, the car interior actual temperature is changed according to the set temperature, and finally the set temperature range is achieved. Car factories and air conditioner component factories can be assisted in rapidly achieving comfortable road calibration, the human body comfort requirement is met, and a comfortable environment space is created for drivers and passengers.

Description

technical field [0001] The invention relates to the technical field of automatic control of an automobile air conditioner, in particular to an automatic control method for the temperature of an HVAC assembly of an automobile air conditioner and the comfort of a mode damper. Background technique [0002] Domestic automotive air-conditioning heat exchange (HVAC) system manufacturers often work separately from air-conditioning controller manufacturers. Heat exchange system manufacturers pay more attention to thermodynamics, fluid mechanics, temperature field distribution, noise, temperature rise, air outlet temperature linearity, and temperature difference. However, air-conditioning controller manufacturers pay more attention to how to use microcomputers to realize output actions and functions, and do not have a systematic and comprehensive understanding of vehicle comfort. Different manufacturers and different car series have different heat loads, and there is no completely co...

AI Technical Summary

Problems solved by technology

[0006] Traditional air-conditioning controller manufacturers do not really understand the HVAC temperature linear data, the temperature damper control curve is not fitted according to the test data of the inherent characteristics of HVAC, the curvature or slope is far from the actual vehicle air conditioner, making the calibration work half the effort; Using a relatively fixed set of control data, only simple adjustments are made for different damper openings, and it is difficult to meet the comfort requirements of the vehicle; some use a piecewise function to control the temperature damper. Simply modifying the variable coefficient may satisfy the working condition after modifying a certain parameter, but at the same time it will affect other working conditions that have been calibrated before. Such tossing will eventually make it difficult to achieve the target temperature of ±2°C; it cannot be linearized according to the HVAC temperature Data extraction The control data of the automatic air outlet mode directly affects the comfort of the human head and face, and at the same time affects the reasonable temperature field distribution in the car, which greatly affects the comfort calibration of the whole car

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