Permanent Magnet Synchronous Motor (PMSM) variable-speed drive is widely used in the industry because of its particularly high mechanical power density, simplicity and cost effectiveness. Eliminating the mechanical sensor mounted on the shaft of the motors gives further improvement. These drives are referred to as “sensorless” electrical drives. In this paper a novel sensorless algorithm is pro...

The pathophysiology of failure to wean from mechanical ventilation consists of depressed central respiratory drive, impaired respiratory mechanics, respiratory muscle weakness, increased load, impaired gas exchange, and compromised cardiovascular performance. Among patients with weaning failure, depressed central respiratory drive occurs in only a small portion (approximately 10%),1 whereas mos...

Department of Electrical and Computer Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093, United States Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093, United States Department of Mechanical and Aerospace Engineering, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093...

Mobile robotics science has been influenced by developments in electronics and software sciences it reached significant levels the last 50 years. This study aims to present design of an indoor mobile robot platform (MAVI-BOT). The consists a chassis made aluminum, 2D light detection ranging sensor (LIDAR), inertial measurement unit (IMU), infra-red camera LED projection, industrial PC. platform...

This paper presents a magnetostrictive in-pipe impact drive mechanism (IDM). To estimate the output performances of the IDM, a dynamics model was developed based on the magnetostrictive material constitutive model and mechanical model of the IDM. Therefore, an experimental system has been built to test the motion performance of IDM. Simulation and experimental results illustrate that the propos...

Mechanical interactions are essential for bending and shaping tissues during morphogenesis. A common feature of nearly all internal organs is the formation of a tubular network consisting of an epithelium that surrounds a central lumen. Lumen formation during organogenesis requires precisely coordinated mechanical and biochemical interactions. Whereas many genetic regulators of lumen formation ...

We explore the topology of configuration spaces of hard disks experimentally and show that several changes in the topology can already be observed with a small number of particles. The results illustrate a theorem of Baryshnikov, Bubenik, and Kahle that critical points correspond to configurations of disks with balanced mechanical stresses and suggest conjectures about the asymptotic topology ...

This paper describes a methodology for the drive train configuration arrangement of gear coupled manipulators. The approach is based on the idea that the kinematic structure of a gear coupled manipulator can be described by an equivalent open-loop chain (EOLC) and mechanical power transmission lines that drive the EOLC. Conditions to select proper drive train configuration such that manipulator...