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PTC outlet air temperature control method of automobile air conditioning system

A technology for automotive air conditioning system and outlet air temperature, applied in vehicle components, air handling equipment, heating/cooling equipment, etc., can solve problems such as temperature overshoot and oscillation, and achieve overshoot reduction, instantaneous deviation reduction, input signal smooth effect

Pending Publication Date: 2021-09-28
上海热翼智控系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the user quickly adjusts the air outlet temperature to a certain target value, there will be a large deviation ΔT between the air outlet target temperature and the actual temperature, and the PI output will change greatly, which will easily cause temperature overshoot or oscillation

Method used

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  • PTC outlet air temperature control method of automobile air conditioning system
  • PTC outlet air temperature control method of automobile air conditioning system
  • PTC outlet air temperature control method of automobile air conditioning system

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specific Embodiment

[0017] specific embodiment figure 2 As shown, the present invention includes the following steps: first, setting the PTC target temperature of the air conditioning system; second, increasing the target temperature slope between the target temperature and the PI regulator according to the difference between the PTC target temperature of the air conditioning system and the actual feedback temperature Up-down control strategy; Third, the PI regulator performs PTC power regulation according to the input temperature ramp up-down control target.

[0018] In the implementation process of the present invention, after adding the target temperature ramp control link, the instantaneous deviation ΔT between the target temperature of the air outlet and the actual temperature can be significantly reduced, making the input signal more gentle and reducing the system overshoot, thereby optimizing The time response of the system.

[0019] The ramp control unit is usually expressed in English ...

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Abstract

The invention relates to a PTC outlet air temperature control method of an automobile air conditioning system in the field of automobile air conditioning control. The method is characterized by comprising the following steps of: 1, setting PTC target temperature of the air conditioning system; 2, according to the difference between the PTC target temperature of the air conditioning system and the actual feedback temperature, adding a target temperature slope rising and falling control strategy between the target temperature and a PI regulator; 3, enabling the PI regulator to execute the PTC power regulation according to the input temperature slope rising and falling control target. According to the invention, the input signal can become smoother, and the overshoot of the system is reduced, so that the time response of the system is optimized.

Description

technical field [0001] The invention relates to an air temperature control method in the field of automobile air conditioning, in particular to a method for controlling the PTC outlet air temperature of an automobile air conditioning system, which can make the input signal more gentle and reduce system overshoot. Background technique [0002] In the heating control of the automotive air conditioning system, the fast and accurate response of the outlet air temperature is the premise to ensure the comfort of the air conditioner. PTC is usually used as the main heat source at low temperature (usually below -10°C) and the auxiliary heat source when the heating capacity of the heat pump is insufficient. Due to the characteristic of PTC that directly converts electrical energy into heat energy, the PTC outlet air temperature changes rapidly, and the target air outlet temperature is easy. Overshoot, so that the air mixing damper is adjusted to open, and the cold air is mixed in ord...

Claims

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Application Information

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IPC IPC(8): B60H1/00B60H1/22
CPCB60H1/00735B60H1/2215B60H1/2218
Inventor 郑满华吕传超肖硕石娟
Owner 上海热翼智控系统有限公司
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