title: Sun tracking systems: a review.
abstract: The output power produced by high-concentration solar thermal and photovoltaic systems is directly related to the amount of solar energy acquired by the system, and it is therefore necessary to track the sun's position with a high degree of accuracy. Many systems have been proposed to facilitate this task over the past 20 years. Accordingly, this paper commences by providing a high level overview of the sun tracking system field and then describes some of the more significant proposals for closed-loop and open-loop types of sun tracking systems.
authors.affiliation: Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 912; E-Mail:  leecy@mail.npust.edu.tw.
authors.forename: Chia-Yen
authors.initials: CY
authors.lastname: Lee
authors.forename: Po-Cheng
authors.initials: PC
authors.lastname: Chou
authors.forename: Che-Ming
authors.initials: CM
authors.lastname: Chiang
authors.forename: Chiu-Feng
authors.initials: CF
authors.lastname: Lin