Electronic expansion valve model coefficient determination method and device
An electronic expansion valve and model technology, which is applied in general control systems, control/regulation systems, instruments, etc., can solve the problems of low simulation accuracy of electronic expansion valves, and achieve the effect of improving the simulation accuracy.
Inactive Publication Date: 2016-10-12
GREE ELECTRIC APPLIANCES INC
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[0005] The main purpose of the present invention is to provide a method and device for determining the coefficients of the electronic expansion valve model, so as to solve the problem of low accuracy in simulation of the electronic expansion valve in the prior art
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[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0024] It should be noted that the terms "fir...
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The invention discloses a method and device for determining the coefficient of an electronic expansion valve model, wherein the method includes: calculating the pressure drop coefficient of the pre-established electronic expansion valve model by using the experimental test data of the electronic expansion valve; calculating the pressure drop coefficient The final electronic expansion valve model inputs the pressure drop to be measured; the flow rate corresponding to the pressure drop to be measured is obtained through the simulation calculation of the electronic expansion valve model; the flow rate corresponding to the pressure drop to be measured obtained by the simulation is judged to be the flow rate corresponding to the pressure drop to be measured in the experimental test Whether the error exceeds the preset range; when the error does not exceed the preset range, the calculated pressure drop coefficient is used as the pressure drop coefficient of the electronic expansion valve model. Through the invention, the simulation accuracy of the electronic expansion valve is improved.
Description
technical field [0001] The invention relates to the field of electronic expansion valves, in particular to a method and device for determining coefficients of an electronic expansion valve model. Background technique [0002] At present, simulation has gradually entered the major product production industries, such as the air-conditioning industry. Compared with the experimental test of product samples, the cost of simulation is greatly reduced. Therefore, it is the trend of the situation to replace experimental testing with simulation. Before simulating a product, it is necessary to model the product, and then use the modeled model to simulate the working conditions of the product. [0003] In the field of electronic expansion valves, the modeling of electronic expansion valves in the current industry simulation software is basically similar to orifice throttling. This method has low simulation accuracy and large errors for electronic expansion valves. [0004] Aiming at t...
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Login to View More IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 魏忠梅林伟雪玉格余锐生苏起钦
Owner GREE ELECTRIC APPLIANCES INC