Gradient extremum search algorithm-based double closed-loop lighting energy-saving control method
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A search algorithm, energy-saving control technology, applied in energy-saving control technology, lighting devices, light sources, etc., can solve problems such as waste of energy consumption and complex control methods
Inactive Publication Date: 2016-10-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0006] And the existing lighting system, such as the Chinese invention patent application filed by the applicant on November 9, 2015 and published on January 27, 2016, with the publication number 105282939A and the name "A Method and S
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example 1
[0084] Now take grouping n=2 as an example, group all lamps in the lighting control area, that is, divide them into 2 groups, and the specific control process is as follows:
[0085] The first step: if figure 2 As shown, for the indoor area C that needs lighting control, according to the relevant configuration information, all 11 lamps in the room are artificially divided into two groups: the lamp numbered 1 is lamp group 1, and the percentage is w 1 , the remaining 6 lamps numbered 2 are lamp group 2, and the percentage is w 2 . percentage w 1 +w 2 = 1, by changing the percentage w 1 ,w 2 The value of can control the brightness between two sets of fixtures. A light sensor is installed in the illuminance control area, that is, area C, to collect the illuminance of the area.
[0086] Step 2: Set its illuminance to 90lux, and initialize it to estimate the percentage of the first one of the two groups of lamps, and then generate the percentage w after disturbance 1 , ano...
example 2
[0095] Now take grouping n=4 as an example, group all lamps in the lighting control area, that is, divide them into 4 groups, and the specific control process is as follows:
[0096] The first step: in this embodiment, if Figure 7 As shown, for indoor area C where lighting control is required, according to the relevant configuration information, all 11 lamps in the room are artificially divided into four groups: the lamp numbered 1 in area C is lamp group 1, and the percentage is w 1 ;The 4 lamps numbered 2 are lamp group 2, and the percentage is w 2 ;The 2 lamps numbered 3 are lamp group 3, and the percentage is w 3 , accounting for the 4 lamps numbered 4 is lamp group 4, and the percentage is w 4 . percentage w 1 +w 2 +w 3 +w 4 = 1, by changing the percentage w 1 ,w 2 ,w 3 ,w 4 The value of can control the brightness between two sets of fixtures. A light sensor is installed in the illuminance control area, that is, area C, to collect the illuminance of the area....
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Abstract
The invention discloses a gradient extremum search algorithm-based double closed-loop lighting energy-saving control method. The illumination requirement is kept through PID closed loop control; meanwhile, continuous iteration is carried out through a gradient extremum search algorithm to quickly search out the minimum value of energy consumption of a lighting system; and stable output of the minimum value is kept. The control has an important control role when applied to the lighting system. Aiming at the illumination energy consumption problem, the most ideal condition is to ensure the regional illumination demand and to reduce the energy consumption to the minimum value. According to the gradient extremum search algorithm-based double closed-loop lighting energy-saving control method, the grouping condition, namely the percentage of a lamp bank (each group of lamps) is adjusted through a Newton extremum search control algorithm, so that the condition that an illumination control region reaches the illumination requirement, i.e., the target illumination value is ensured; meanwhile, low-energy consumption stable output of the lighting system can be kept; the requirements of users are met; and the energy-saving effect is also achieved.
Description
technical field [0001] The invention belongs to the technical field of lighting control, and more specifically, relates to a control method for meeting illumination requirements while reducing energy consumption, that is, based on grouping lamps and using gradient method to search for extreme values to find the lighting energy-saving lighting with the lowest relative energy consumption. Control Method. The control method can track the set illuminance value, that is, the target illuminance value in real time, so that the illuminance value of the target area is stabilized at the set illuminance value, and the relative minimum value of the total energy consumption can be searched under the condition that the illuminance value of the target area is stable, so as to realize Further energy savings. 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 lig...
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