A kriging-based robust parameter design method for frame circuit breakers

A frame circuit breaker and parameter design technology, applied in CAD numerical modeling, special data processing applications, geometric CAD, etc., can solve problems such as the inability to determine the global optimal solution, low optimization accuracy, and the inability to eliminate the interactive influence of factors

Active Publication Date: 2021-08-17
HARBIN INST OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current parameter design method of electrical appliances cannot determine the global optimal solution, cannot eliminate the interaction of factors affecting the robustness of the scheme, and the complexity of the modeling process leads to low optimization accuracy, and provides a framework based on Kriging. Parameter design method for device robustness

Method used

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  • A kriging-based robust parameter design method for frame circuit breakers
  • A kriging-based robust parameter design method for frame circuit breakers
  • A kriging-based robust parameter design method for frame circuit breakers

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specific Embodiment approach 1

[0021] Specific implementation mode one: what this implementation mode records is a kind of robustness parameter design method of frame circuit breaker based on Kriging, and described method comprises the following steps:

[0022] Step 1: Determine the input parameters and uncertainty factors according to the research object and optimization goal, and carry out the orthogonal test design of the inner and outer surfaces; among them, the input parameters are arranged in the inner table, and the uncertainty factors are arranged in the outer table, according to the number of input parameters and uncertain factors Select the inner and outer orthogonal tables and determine the test plan respectively; the research object is a circuit breaker, and the optimization target depends on the actual situation, which can be the breaking speed, the size of the breaking force, etc.; the input parameters can affect the optimization target The size of each key part of the circuit breaker can also ...

specific Embodiment approach 2

[0029] Specific embodiment 2: A method for designing robustness parameters of frame circuit breakers based on Kriging described in specific embodiment 1. In step 3, the decoupling of the parameters is specifically: selecting any two parameters from the input parameters The non-heavy combination (X, Y), first calculate the variation Δx and Δy of the corresponding output characteristics when the parameter X and the parameter Y change independently, and then calculate the variation Δxy of the corresponding output characteristic when the combination of (X, Y) changes at the same time, If the parameter X is completely independent from the parameter Y, the mathematical relationship of Δxy=Δx+Δy should be satisfied, otherwise, it means that there is an interaction between the parameter X and the parameter Y.

[0030] Define the interaction factor γ to reflect the degree of interaction between the parameters X and Y, and use the following formula to determine the interaction between th...

specific Embodiment approach 3

[0031] Specific embodiment three: a kind of Kriging-based frame circuit breaker robustness parameter design method described in specific embodiment one, in step five, the polynomial function between the adjustment factor and the output characteristic established by the linear regression method is specifically as follows : After determining the stability factor optimization scheme, the output characteristics will deviate with the change of parameter values, first calculate the offset ΔF of the output characteristics s , and then jointly adjust the factor polynomial F a , to establish the offset compensation target H 2 , as shown in the following formula:

[0032]

[0033] Since the adjustment factor and the stability factor are independent of each other, the output offset can be quantitatively compensated without affecting the robustness of the scheme, and finally the adjustment factor X a design plan.

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Abstract

A Kriging-based robustness parameter design method for a frame circuit breaker belongs to the technical field of circuit breaker product design. The present invention is to solve the problem that the current parameter design method cannot determine the global optimal solution and cannot eliminate the interaction of factors affecting the robustness of the scheme. The method is as follows: 1. Determine controllable factors, error factors and orthogonal test scheme; 2. Conduct Significant analysis of signal-to-noise ratio and sensitivity to determine the stability factors; 3. Conduct interactive analysis to determine the adjustment factors; 4. Establish the Kriging model of the stability factors and the robustness optimization objective function to determine the optimal solution of the stability factors; 5. Establish the adjustment Factor polynomial model and offset compensation objective function to determine the optimal solution for adjusting factors. The invention determines the adjustment factors by decoupling the parameters, and then uses the adjustment factors to compensate the deviation of the output characteristics, so as to realize the adjustment of the output characteristics to the target value without affecting the robustness of the stability factors.

Description

technical field [0001] The invention belongs to the technical field of circuit breaker product design, and in particular relates to a Kriging-based method for designing robustness parameters of a frame circuit breaker. Background technique [0002] Parameter design is an important link in the design process of electrical products. It not only directly determines whether the output characteristics of the product can meet the design requirements, but also directly affects the resistance of the product design scheme to external interference, internal interference, manufacturing dispersion and other uncertain factors. Capacity, ie robustness, is well utilized in circuit breaker sizing. Therefore, it is of great significance to improve the performance stability and quality consistency of circuit breaker products by using robust parameter design method. [0003] The key to robust parameter design is to use the nonlinear nature between input parameters and output characteristics t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/17G06F111/10
CPCG06F30/17G06F2111/10
Inventor 邓杰周学唐伟余旭王金华翟国富
Owner HARBIN INST OF TECH
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