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Fractional gradient extremum search method based on illumination platform

A search method and step gradient technology, applied in the field of extremum search, can solve the problems of inaccurate search accuracy, inability to search faster and more accurately, and low search efficiency, and achieve a large performance adjustment range, good optimization effect, Search for precise results

Active Publication Date: 2017-10-20
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, when using gradient extremum value to search for the lowest energy consumption value, the search efficiency is low, it takes a lot of time, and the search accuracy is not accurate enough to find the minimum energy consumption value of the system faster and more accurately, so as to realize the whole lighting System optimization and energy saving

Method used

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  • Fractional gradient extremum search method based on illumination platform
  • Fractional gradient extremum search method based on illumination platform
  • Fractional gradient extremum search method based on illumination platform

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Experimental program
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Embodiment

[0040] In this embodiment, the present invention is applied to an intelligent lighting experiment platform, and the operation flow of the platform is briefly introduced below. The lighting platform mainly includes small houses, small lights, illuminance sensors, data acquisition cards, and computers. The illuminance sensor transmits the illuminance value of a specific area in the small house to the computer through the data acquisition card, and the computer acts as a controller to process the collected information in real time and generate corresponding control instructions to control the illuminance value of each lamp group respectively, thus forming a The entire lighting control closed-loop system. The invention adopts the minimum energy consumption search method of the lighting system using fractional gradient extreme value search control, including a control method for stabilizing the illuminance value of the target area near the illuminance value set by the user and an e...

example

[0058] In this embodiment, we divide all lamps used for illumination control area lighting into two groups, the schematic diagram of grouping is as follows image 3 As shown, the target area illumination value is set to 45lux, 55lux, and 65lux, and the traversal experiments are carried out for the three illumination setting values.

[0059] When the illuminance setting value is 45lux, the actual illuminance value of the target area changes with time as follows: image 3 Shown; At the same time, the relationship between the current distribution coefficient ω and the corresponding energy consumption value E under the condition of the illumination setting value is obtained as follows Figure 4 shown. In the case of the same grouping, experiments were carried out on the control illumination setting values ​​of 55lux and 65lux respectively, and the experimental data are shown in Table 1;

[0060]

[0061]

[0062] Table 1

[0063] The illumination value of the target area ...

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Abstract

The invention discloses a fractional gradient extremum search method based on an illumination platform. Through real-time tracking of a set illumination value, a target area illumination value is stabilized in a set illumination value scope, a relative minimum value of system energy consumption is searched through a fractional gradient extremum search control algorithm, a light fixture is made to reach and keep combination output having a relatively lowest energy consumption value, and optimization and energy saving of an integral illumination system are realized.

Description

technical field [0001] The invention belongs to the technical field of extremum search, and more specifically relates to a fractional gradient extremum search method based on an illumination platform. Background technique [0002] According to statistics, while the global energy consumption is increasing day by day, the power consumption is also rising accordingly, among which lighting alone accounts for 20% of the world's total annual electricity consumption. Obviously, saving electric energy and reducing the consumption of electric energy is an essential part of the whole energy-saving project. The present invention takes better energy saving as the starting point, so as to realize the maximum reduction of energy consumption in the lighting system. [0003] In the existing technology, a double closed-loop control system using PID control algorithm and gradient-based extreme value search algorithm, using PID control algorithm to ensure that the illuminance value of the tar...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCH05B47/11Y02B20/40
Inventor 程玉华殷春薛建宏胡彬杨张博白利兵陈凯
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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