A Modeling Method of LED Lamps Considering the Correlation Between Modules

A technology of LED lamps and modeling methods, applied in CAD numerical modeling, instruments, design optimization/simulation, etc.
CN106529054BActive Publication Date: 2019-06-28UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
Publication Date
2019-06-28

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Abstract

The invention provides a modeling method of an LED lamp considering correlation between modules. The method comprises the following steps: performing reliability structure analysis of an LED Lamp; building a performance degradation mechanism and a mathematical model thereof of the LED; building a performance degradation and mathematical model thereof of a power module; calculating the influence of random shocks on each structure of an LED lamp system; considering the correlation of performance degradation and system-level modeling of directional propagation; performing reliability design optimization of the LED lamp; and obtaining a performance degradation model. Compared with the prior art, the modeling method of the LED lamp considering the correlation between the modules provided by the invention has the following beneficial effects: multi-objective optimization is achieved by using an evolutionary algorithm, a non-dominated solution set of optimization problems is obtained, and lamp manufacturing enterprises choose the most suitable solution in the non-dominated solution set. The method provides a powerful system reliability design and optimization tool for the lamp manufacturing enterprises.
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Description

technical field

[0001] The invention relates to a modeling method of an LED lamp considering the inter-module correlation, and belongs to the technical field of LED lamps. Background technique

[0002] LED lamps are a system composed of multiple modules, and the performance of each module is degraded continuously. According to the current LED life calculation method generally accepted in the industry, the time when the LED light decay drops to a certain percentage of the initial value is the LED lamp. The definition of life, that is, the life of LED lamps is determined by the light decay of the LED chip. The light decay characteristics of the LED chip are not only affected by its own process quality, but also the performance of other modules will have a great impact on its light decay. Therefore, the modeling of LED lamps is theoretically a system modeling problem that considers multiple modules with performance degradation characteristics and external impacts.

[0003] For...

Claims

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