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A Product Robustness Analysis Method Based on Parameter Range Matching
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An analysis method and robust technology, applied in the direction of instrument, adaptive control, control/regulation system, etc., can solve the problem of lack of fast and robust analysis method
Active Publication Date: 2021-09-07
台州旭日环境科技有限公司
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[0008] Traditional robustness analysis is often carried out in the later stage of product design, that is, after the design scheme is completely determined, and on the basis that all design parameters are known, it is carried out by constructing complex mathematical models, and supports the early stage of product design. The fast and robust analysis method is still lacking
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Embodiment 1
[0036] A product robustness analysis method based on parameter range matching, the steps are as follows:
[0037] (1) Establish the topology structure of product components
[0038] According to the input and output associations of product components, the topology structure diagram of product components is established, such as figure 1 Shown is the topological structure diagram of the product component P in the product robustness analysis method based on parameter range matching in Embodiment 1 of the present invention; 1 、c 2 、c 3 、c 4 、c 5 The product P of P, the input of P is I, the output is O, c 1 accepts a product input I, and produces two output streams c 1 .o 1 、c 1 .o 2 , respectively input to component c 2 、c 3 、c 4 , c 2 、c 3 、c 4 Each has an output stream, both input to c 5 , and finally c 5 The output of is used as the output of product P;
[0039] According to the input-output relationship of the above product components, it can be constructed a...
Embodiment 2
[0054] Such as figure 2 Shown is the topological structure diagram of the hair dryer product P in the product robustness analysis method based on parameter range matching in Example 2 of the present invention, wherein 1 is a junction box, 2 is a resistance wire, 3 is a motor, and 4 is a fan ; Its input flow is electric energy i 1 and air i 2 , the output flow is air o 1 , mechanical energy o 2 and thermal energy o 3 , and both mechanical energy and thermal energy are loaded on the air flow to form a high-speed and high-temperature air flow;
[0055] The input and output stream parameters of the above components are defined as follows:
[0056] Junction box 1(c 1 ): The input stream is electric energy, the input parameter i is the current ampere, and the acceptable range is [0A, 2A]; its two output streams c 1 .o 1 with c 1 .o 2 The output is current, and the output parameter range is [0A, 2A];
[0057] Resistance wire 2 (c 2 ): The input flow is electric energy, t...
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Abstract
The invention discloses a product robustness analysis method based on parameter value ranges, which belongs to the technical field of product design, and the steps are as follows: (1) establish the topology structure of product components; (2) calculate the robustness index of the components; 3) Calculate the overall robustness index of the product: starting from each system input stream, according to the robustness index of the product component, multiply the product component robustness index between the input stream and the output stream to get the output Robustness metrics on streams. The product robustness analysis method based on the parameter value range of the present invention is based on the robustness of the components in the context environment, can quickly find out the weak links of product robustness, provide guidance for improving product design, and improve design efficiency; design Through the method of the invention, personnel can effectively identify components that are sensitive to input parameters, that is, components with low robustness, in the product structure, and provide a convenient method for designers to analyze robustness defects in product design schemes and improve product design.
Description
technical field [0001] The invention relates to the field of product design, that is, in the early stage of product design, after the component selection is completed, how to analyze the reliability of the product on the basis of the input parameter range of the product component, so as to facilitate designers to quickly find potential ineffectiveness in product design. Solving the problem of rod defects not only improves design efficiency, but also provides direction guidance for improving product design. Background technique [0002] "Robustness" refers to the characteristics of the control system to maintain certain other performances under certain (structure, size) parameter perturbations. That is, the robustness of the system is the key to the survival of the system in abnormal and dangerous situations. Robust control methods are suitable for applications where stability and reliability are the primary goals, while the dynamic characteristics of the process are known a...
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