This paper proposes the new speed control method of electric vehicles by generating the longitudinal speed pattern for improving the ride comfort against the longitudinal acceleration/deceleration. Since the longitudinal acceleration/ deceleration of EVs causes the discomfort of passengers, reducing such bad effect of acceleration/deceleration acting on passengers is very important for not only...

Abstract By characterizing the time evolution of COVID-19 in term its ‘velocity’ (log new cases per day) and rate variation, or ‘acceleration’, we show that many countries there has been a deceleration even before lockdowns were issued. This feature, possibly due to increase social awareness, can be rationalized by susceptible-hidden-infected-recovered model introduced Barnes, which hidden (iso...

We describe the production of cold, slow-moving LiH molecules. The molecules are produced in the ground state using laser ablation and supersonic expansion, and 68% of the population is transferred to the rotationally excited state using narrowband radiation at the rotational frequency of 444 GHz. The molecules are then decelerated from 420 m/s to 53 m/s using a 100 stage Stark decelerator. We ...

A non-parallel analysis of time-oscillatory instability of conical jets reveals important features not found in prior studies. Flow deceleration significantly enhances the shearlayer instability for both swirl-free and swirling jets. In swirl-free jets, flow deceleration causes the axisymmetric instability (absent in the parallel approximation). The critical Reynolds number Rea for this instabi...

In this paper we present a method that has been developed for fast stopping in pick and place robotic applications with high inertia loads and self-blocking transmissions. The latter is the case of worm gears and power transmission screws. Hence a desired trajectory can be executed at maximum speed and near optimal time with a controlled overloading of the torque at the transmission output shaf...

A supersonic beam of metastable neon atoms has been decelerated by exploiting the interaction between the magnetic moment of the atoms and time-dependent inhomogeneous magnetic fields in a multistage Zeeman decelerator. Using 91 deceleration solenoids, the atoms were decelerated from an initial velocity of 580 m/s to final velocities as low as 105 m/s, corresponding to a removal of more than 95...