Central air-conditioning energy conserving fuzzy controlling method and fuzzy controller thereof

Abstract

The invention discloses a central air-conditioning energy conserving fuzzy controlling method and fuzzy controller thereof, comprising a microcomputer, input circuit, output circuit, protection circuit, communication interface circuit, power supply and control system solidified in the microcomputer. The controller can simulate the decision-making process of the technical specialist to solve the complex problems in the air-conditioner operation. The control by the invention conforms with the complexity, dynamic and fuzzy feature of the central air-conditioner.

Description

Technical field: [0001] The invention belongs to intelligent control equipment of a central air-conditioning energy-saving control system, in particular to a fuzzy control method and device for energy-saving control of a central air-conditioning system. technical background: [0002] At present, with the increasing shortage of energy in the world, in the design and operation of central air-conditioning systems, the design and application of energy-saving control systems have attracted more and more attention. [0003] In recent years, with the emergence of high-power power electronic devices, the miniaturization and practicalization of frequency converters have been promoted. In order to reduce energy waste in central air-conditioning systems, people have begun to use frequency converters to control water pumps and fans in air-conditioning systems. The acquisition of pressure difference and temperature adopts programmable logic controller (PLC), and performs PI (proportional...

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Problems solved by technology

For such a system, it is difficult to achieve a good control effect no matter using the classic PID control or various algorithms of modern control theory.

[0007] For a multi-parameter, nonlinear, time-varying and complex system with strong coupling between parameters, such as a central air conditioner, it is generally difficult to describe it with an accurate mathematical model or the resulting model is either too complex or relatively rough, with accuracy as the main feature The classical mathematics of this kind of control problem is often difficult to work

[0008] However, a skilled operator or technician, relying on his own experience, relying on the observation of his eyes, ears and other sensory organs, through the thinking judgment of the brain, gives the control amount, and can receive satisfactory results through manual operation. Control effect

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