This report describes a design optimization model for an automotive water (coolant) pump driven by a DC electric motor. It is intended for use as an example problem for multidisciplinary design optimization (MDO) methods, and consists of several interacting analysis functions. These analysis functions are based on sets explicit algebraic equations, making this model easily reproduced for use in...

Topic of the paper is the reconstruction of the speed field and the recognition of typical daily patterns in floating truck data (FTD) collected by heavy vehicles operating on Italian motorways. We present a statistical analysis of velocity measurements from FTD and a procedure for the estimation of the typical speed profiles. Output of this procedure could be exploited for integration of missi...

BACKGROUND Self-assessed health status (SAHS) and physical performance measures (in particular, walking speed) are strong predictors of health-related events. Nevertheless, the possible interaction between them in predicting major outcomes has not been clearly explored. OBJECTIVE The aim of the study is to evaluate the predictive and additive value for mortality of a SAHS measure and a walkin...

The requirements for track loading limits are one of the main barriers to simple crossacceptance of vehicles where rolling stock that is already operating successfully in one (or more) networks has to be re-tested before it can be approved for operation on another network. DynoTRAIN WP 4 studied this area in order to determine whether the additional requirements were justified, or if the proces...

This article explores the simulation of stall phenomena in axial compressor blade rows. The approach is based on the numerical solution of the compressible, two-dimensional Navier-Stokes equations. The results of both unforced and forced low-speed rotor stall are presented. In unforced cases, substantial ow separation is observed before the maximum pressure rise operating point is reached. Thes...

This paper presents the methods used in speed control of Permanent magnet synchronous motor (PMSM) drives. Permanent magnet synchronous motor(PMSM) are widely used in AC servo drives because of its high torque to inertia ratio, high power density, high efficiency and power factor as compare to the other motors used in drives. The study shows that the methods used to improve the performance of P...

Abstract We have designed a high-speed SFQ bit-serial carry-save adder based on the binary decision diagram (BDD). A simple bit-serial carry-save adder based on the BDD we first designed has a carry-feedback loop. Its input data frequency is limited by the propagation delay in the feedback loop. In our second adder design, we have replaced one BDD gate with a nondestructive binary switch, by wh...

In this paper we analyse a serial (ripple carry) and a parallel (Kogge-Stone) adder when operating in subthreshold at 100nm and 70nm. These are targeted for ultra low power consumption applications. The elementary gates used are threshold logic gates (perceptrons). Simulations have been performed both with and without considering the delay on the wires. These simulations confirm that wires play...

In this paper, DQ-modeling approach for Transient State analysis in the time domain of the threephase self-excited induction generator (SEIG) with squirrel cage rotor is presented along with its operating performance evaluations. The three-phase SEIG is driven by a variable-speed prime mover (VSPM) such as a wind turbine for the clean alternative renewable energy in rural areas. Here the prime ...

The flow hydrodynamics in a low specific speed radial pump-turbine reduced scale model is experimentally investigated under off-design operating conditions in generating mode. Wall pressure measurements, in the stator, synchronized with high-speed flow visualizations in the vaneless space between the impeller and the guide vanes using air bubbles injection are performed. When starting from the ...