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Fuzzy control method for air conditioner and system thereof

A fuzzy control system and fuzzy control technology, applied in general control systems, control/regulation systems, heating and ventilation control systems, etc., can solve problems such as reducing the service life of air conditioners and affecting system stability, and achieve the goal of eliminating pressure pulsations Effect

Active Publication Date: 2011-01-12
TIANJIN UNIV +1
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Problems solved by technology

[0003] Although the short-term pressure pulsation of the air conditioner is not a serious problem, when the pulsation exists for a long time, it will affect the stability of the system, and in severe cases, it can reduce the service life of the air conditioner

Method used

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  • Fuzzy control method for air conditioner and system thereof
  • Fuzzy control method for air conditioner and system thereof
  • Fuzzy control method for air conditioner and system thereof

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Embodiment Construction

[0025] In order to solve the pressure pulsation problem of the air conditioner, the present invention provides a fuzzy control method and system for the air conditioner. Next, the fuzzy control method and its system are described in detail.

[0026] 1. The principle of fuzzy control

[0027] First, explain the related principles of the fuzzy control of the present invention.

[0028] Fuzzy control is a control algorithm developed on the basis of Zade's fuzzy set theory. Its remarkable advantage is that it ignores the mathematical model of the control object, and realizes the control of the object through fuzzy calculation and fuzzy reasoning according to the knowledge and operation experience of experts. intelligent control. This largely compensates for the limitations of traditional control algorithms. Fuzzy control is a macroscopic method for system control. Its core is the control rules described in language, usually expressed in the form of if...then...(IF...THEN...) k...

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Abstract

The invention discloses a fuzzy control method for an air conditioner and a system thereof. The system comprises a fluctuation detection module aiming at exhaust temperature, a fuzzy controller, a PIDcontrol module, a limit value adjusting module and a valve control module. By acquiring exhaust temperature signals and detecting whether the exhaust temperature signals are in a fluctuation state, the opening degree of an electronic expansion valve is changed through feedback control, and the pressure fluctuation is effectively eliminated; and simultaneously, under the condition of not increasing the cost, the stability of the system is enhanced and the service life of the system is prolonged.

Description

technical field [0001] The invention relates to a fuzzy control method and system thereof, in particular to a fuzzy control method and system thereof for an air conditioner. Background technique [0002] When the long pipes of unit and multi-split air conditioners are running, pressure pulsation will occur under certain operating conditions. The pressure, current and exhaust temperature fluctuate periodically. The reason for the fluctuation is closely related to the alternating ablation of the refrigerant gas-liquid two-phase in the circulation system, especially in the circulation system with only one electronic expansion valve (or capillary) This fluctuates). [0003] Although the short-term pressure pulsation of the air conditioner is not a serious problem, when the pulsation exists for a long time, it will affect the stability of the system, and in severe cases, the service life of the air conditioner can be reduced. [0004] Therefore, how to solve the pressure pulsa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00G05B19/04G05B13/00
Inventor 车延博石靖峰
Owner TIANJIN UNIV
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