Object shape and camera motion recovery from an image sequence is a crucial issue in computer vision and many methods have been proposed by researchers. Theoretically, these methods are perfect, but they are sensitive to noise, so that in many practical situations, satisfactory results cannot be obtained. To solve this problem, we propose a shape and motion recovery method using a gyro sensor a...

AbshocT-The accurate measurement of vehicle yaw rate is vital for vehicle dynamics control, such as yaw control and traction control. Generally vehicle yaw rate is measured by gyro that will cost too much to he wed commercially as an on-vehicle sensor. Based on soft sensor technique in inferential control theory, a novel method for the estimation of vehicle yaw rate is proposed, The estimation ...

Physical processes in the gyrotron backward-wave oscillator (gyro-BWO) are investigated theoretically. Results indicate highly current-sensitive field profiles and hence sharply contrasting linear and saturated behaviors. The linear field extends over the entire structure length, whereas the saturated profile depends strongly on the energetics in the internal feedback loop. It is shown that thi...

INTRODUCTION The new ADXRS150 and ADXRS300 gyros from Analog Devices, with full-scale ranges of 150/s and 300/s, represent a quantum jump in gyro technology. The first commercially available surface-micromachined angular rate sensors with integrated electronics, they are smaller—with lower power consumption, and better immunity to shock and vibration—than any gyros having comparable functiona...

Abstract This paper compares a differential wheelspeed based dead reckoning system to a gyro based system for land navigation. Test results show that the gyro and wheelspeed-heading schemes perform equally well when modeling assumptions hold, such as when navigating smooth road surfaces. However, the wheelspeed-heading estimator’s position errors grow about twice as fast as the gyro based syste...

In this study, we analyzed the swing motions of more experienced practitioner and new practitioner of iaido players by using tri-axial acceleration sensor and gyro sensor. Iaido is a modern Japanese martial art/sport. In this way, the acceleration and gyro sensor measurement enabled detailed motion information at the installation points to be displayed in a short time, thus making it possible t...

A comparative analysis between the fundamental and second cyclotron harmonics of gyrotron backward-wave oscillators (gyro-BWOs) is presented. The simulation results reveal that nonlinear field contraction is a common feature for both harmonic interactions. Besides, the electron transit angle, used to characterize the axial modes of the fundamental harmonic TE11 mode at the start-oscillation con...

A linear theory model is developed to analyze gyrotron traveling wave tubes ~gyro-TWT! employing nonuniform interaction structures, which can be tapered wall waveguide, severed tubes, or distributed lossy wall waveguides. Effects of the wall loss, reflections caused by the nonuniformity of the waveguide, and beam–wave interactions inside the sever region are incorporated in this theory. In addi...

In this paper we present an instrumentation system which integrates inertial motion sensing and mobile computing technologies to acquire sensory information during on-water rowing. The use of miniaturized piezoelectric gyros is proposed and tested to sense the oar rotation. By time-integrating the gyro output signal, the pitch angle, namely the angle the blade is away from perpendicular to the ...