This paper proposes a trajectory planning and tracking approach for bilinear systems that approximate weakly nonlinear systems, based on orthogonal functions and especially the use of operational integration and product matrices. These operational tools allow the conversion of a bilinear differential state equation into an algebraic one depending on initial and final conditions. Arranging and s...

In this article, we describe a slot-synchronization algorithm for optical signals transmitted using pulse-position modulation (PPM). This algorithm utilizes PPM symbol decisions in order to generate a slot-timing error signal without the use of guard time around the transmitted laser pulse or synchronization symbols. We derive expressions for the open-loop characteristic curve of the error sign...

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 overvi...

A novel on-axis general sun-tracking formula has been integrated in the algorithm of an open-loop sun-tracking system in order to track the sun accurately and cost effectively. Sun-tracking errors due to installation defects of the 25 m(2) prototype solar concentrator have been analyzed from recorded solar images with the use of a CCD camera. With the recorded data, misaligned angles from ideal...

Normally visual surveillance systems are based on background subtraction to detect foreground objects and then conduct multiple objects tracking with data association and tracking filters in an open-loop procedure. Different from the state-of-the-art approaches, this paper discusses a closed-loop object detection and tracking method. In our proposed method, each pixel is first modeled with an a...

This paper considers the problem of adaptive output feedback tracking control for a class of nonstrict-feedback nonlinear systems with unknown time-varying delays and unknown backlash-like hysteresis. Fuzzy logic systems are used to estimate the unknown nonlinear functions. Based on the Lyapunov–Krasovskii method, the control scheme is constructed by using the backstepping and adaptive techniqu...