Hsin-Chieh Chen

Learn More
This paper investigates the synchronization of chaotic systems and its application in secure communication. First, a particle swarm optimization (PSO)based proportional -integral (PI) controller is proposed for synchronization of general chaotic systems. By using the PSO algorithm, optimal control gains in PI controller are derived such that a performance(More)
Cytosolic phospholipase A2 (cPLA2) plays a pivotal role in mediating agonist-induced arachidonic acid release for prostaglandin (PG) synthesis during stimulation with interleukin-1beta (IL-1beta). However, the mechanisms underlying IL-1beta-induced cPLA2 expression and PGE2 synthesis by canine tracheal smooth muscle cells (CTSMCs) have not been defined.(More)
This paper presents the synchronization between the master and slave Lorenz chaotic systems by slide mode controller (SMC)-based technique. A proportional-integral (PI) switching surface is proposed to simplify the task of assigning the performance of the closed-loop error system in sliding mode. Then, extending the concept of equivalent control and using(More)
This article describes a highly accurate and instant-response ultrasonic system for measuring air temperature using multi-frequency continuous waves (MFCW). The proposed system uses a method heretofore applied only to radio frequency distance measurement but not to air-based ultrasonic systems. The method presented here is based upon the comparative phase(More)
This paper considers the problem of the speed control for the Permanent Magnet Synchronous Motor system (PMSMs) based on the quasi-sliding mode control. Based Lyapunov stability theory, the quasi-sliding mode controller and switching function are developed such that the speed of PMSM system can tend to the main desired speed in the quasi-sliding mode. The(More)
BACKGROUND Falling onto the outstretched hand is a major cause of upper extremity injury. The overall objectives of this study were to develop an experimental model for elbow load during a simulated fall onto one-armed arrest using three different forearm axially rotated postures as alternative fall arrest strategies. Additionally, the relationship between(More)