| Autor: |
Xiao Dan Ren, Hong Li Cheng, Shuai Sun |
| Rok vydání: |
2012 |
| Předmět: |
|
| Zdroj: |
Advanced Materials Research. :936-939 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.588-589.936 |
| Popis: |
This paper introduces a kind of numerical controlled LED drive power supply based on ARM7. User can set the number and brightness of the LEDs to be lit by the remote control. Switching voltage source and the linear constant current source are connected in series, this circuit structure can ensure high efficiency and small current ripple. ARM7 completes the data collection, fuzzy PID algorithm processing, and real-time output adjustment. This paper explains the working principle of the system in detail and then simulates it in the simulink. The results show that it can satisfy the users' diverse requirements well and give full play to the convenience and controllability of the digital controller. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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