Iterative Learning Control in a Mass Product : Light on Demand in DLP projection systems

Author

Tousain, Rob ; Van Casteren, Dolf

Author_Institution

Philips Appl. Technol., Eindhoven

fYear

2007

fDate

9-13 July 2007

Firstpage

5478

Lastpage

5483

Abstract

The ultra high pressure (UHP) lamp has become the preferred light source for (DLP) projection systems. The application of UHP lamps in rear and front projection systems sets new and more stringent requirements on the quality of the light generated by these lamps. Deviations of the lamp current from the desired current profile translate to unwanted variations of the light output of the lamp, which may lead to annoying color effects in the projected image. To be able to meet the stringent requirements on the current variations, a new iterative learning control (ILC) approach to lamp current control problem has been designed and implemented in the lamp driver. The design, implementation and excellent performance are described in this paper.

Keywords

adaptive control; electric current control; iterative methods; lamps; learning systems; optical projectors; DLP projection systems; Digital Light Processing technology; iterative learning control; lamp current control; light on demand; mass product; ultra high pressure lamp; Color; Control systems; Displays; Lamps; Light sources; Lighting control; Pressure control; Video on demand; Weight control; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2007. ACC '07

Conference_Location

New York, NY

ISSN

0743-1619

Print_ISBN

1-4244-0988-8

Electronic_ISBN

0743-1619

Type

conf

DOI

10.1109/ACC.2007.4282652

Filename

4282652