On November 29th, 2002, Professor Lung-Wen Tsai died peacefully at his home in Riverside, CA. Dr. Tsai was a member of our faculty since 2000. Dr. Tsai’s research interests included robotics, mechanisms and machine theory, design methodology, automotive engineering, and microelectromechanical systems. He was a Fellow of ASME (American Society of Mechanical Engineers) and AAS (American Associati...

Jeffrey A. Butterworth Graduate Research Assistant, Student Member of ASME Department of Electrical, Computer, and Energy Engineering University of Colorado at Boulder Boulder, Colorado 80309 Email: [email protected] Lucy Y. Pao Richard and Joy Dorf Professor Department of Electrical, Computer, and Energy Engineering University of Colorado at Boulder Boulder, Colorado 80309 Email: pao@color...

This work presents a commentary of the article published by A. Zadegan and A. Zilouchian (ASME J. Dyn. Sys. Meas. Contr. ,Volume 127,Issue 3, pp. 486-498, 2005). We show their order reduction method is not always true and may leads to inaccurate results and is therefore erroneous. A framework for solving the problem is also suggested .

Satish G. Kandlikar Fellow ASME Thermal Analysis, Microfluidics, and Fuel Cell Laboratory, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, NY 14623; Mechanical Engineering Department, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, NY 14623 e-mail: [email protected] A Theoretical Model for Axial Heat Conduction Effects During Single-Phase Flow in Microch...

Pressure drop of fully developed, laminar, incompressible flow in smooth mini and microchannels of arbitrary cross-section is investigated. A compact approximate model is proposed that predicts the pressure drop for a wide variety of shapes. The model is only a function of geometrical parameters of the cross-section, i.e., area, perimeter, and polar moment of inertia. The proposed model is comp...

This paper presents a new practical tuning method for fractional order proportional and integral controller (FO-PI). The plant to be controlled is mainly FOPDT (first order plus delay time). The tuning is optimum in the sense that the load disturbance rejection is optimized yet with a constraint on the maximum or peak sensitivity. We generalized MIGO (Ms constrained integral gain optimization) ...