Lighting Energy Saving Control Method Based on Variable Gain Newton Extremum Search Algorithm

Abstract

The invention discloses a lighting energy-saving control method based on a variable-gain Newton extremum search algorithm. The illumination requirement is maintained through PID closed-loop control, and at the same time, the lowest energy consumption of the lighting system is quickly found through continuous iteration through the variable-gain Newton extremum search algorithm. value, and keep the lowest value for stable output; in the variable gain Newton extreme value search algorithm, a positive signal is introduced to change the size of the gain, and the new gain obtained is a positive value of change, and the trend of change is to increase first and then decrease , when it is increased, the output of the algorithm will quickly approach the extreme point, and when it is decreased, the jitter degree of the output near the extreme point will be reduced, which not only shortens the search time, but also reduces the jitter degree when it tends to be stable ; At the same time, by adding a self-closed loop system, you can adjust the parameters to make the output more stable and fast. By adopting the invention, the speed and accuracy of the Newton extremum search algorithm can be improved, thereby improving the overall performance of the lighting energy-saving control method.

Description

technical field [0001] The invention belongs to the technical field of lighting control, and more specifically relates to a lighting energy-saving control method based on a variable-gain Newton extremum search algorithm. 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. [0003] The traditional lighting system can only be turned on and off for lighting, while the existing lighting control system can meet the needs of users by adjusting the brightness of the lights and achieve a certain amount of energy saving, but the control method is more complicated, and the effect of energy saving bad. Therefore, it is necessary to propose...

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Problems solved by technology

[0005] However, in the process of further research and experimental verification of the above method, the applicant found that the method is not ideal in terms of speed and accuracy of extremum search, and further improvement is still needed

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