A general uid moment in the particle coordinates is represented in terms of uid moments in modied guiding-centre coordinates with strong E × B ow derived by the phase space Lagrangian Lie-transform method [N. Miyato et al., J. Phys. Soc. Jpn. 78, 104501 (2009)]. It is called the push-forward representation of the particle uid moment associated with the guiding-centre transformation. The re...

In this paper, we propose a new driving mechanism for a spherical rolling robot and investigate the dynamic characteristics of the robot by theoretical analysis and numerical simulations. The spherical robot has a momentum wheel(gyro) that rotates at a large velocity inside the robot, and its mechanism may be expected to provide the driving force efficiently. However, the dynamics of the robot ...

The access to the information on the vehicle motion state is of great significance for the vehicle stability control and the development of active safety products. However, the vehicle state parameter extraction is primarily accessed by attaching special sensors to the vehicles, which usually requires modification of redesign of the vehicle with high cost. Smartphone integrate gyro, orientation...

In this paper, we present an app development using sensor signals from smartphone ans smart watch. We use Bluetooth communication for the connection between the smartphone and the smart watch. Smart watch includes a various of sensors such as acceleration sensor, gyro sensor, pressure sersor, etc. Using these sensors, we can measure the movement data of the user and transmit to the smartphone. ...

This paper concerns the control design of a PID controlled gimbals suspension gyro, whose parameters are determined by using bifurcation theory. The non-linear mathematical model of the gyro is deduced by using the nutation theory of gyroscopes. Considering a PID controller with constrained integral action, it is shown that depending on different values of the maximum allowed integral action a ...

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...

The problemof attitude and rate gyro bias estimation is addressed by resorting tomeasurements acquired from rate gyros and vector observations. A Set-Valued Observer (SVO) is proposed that has no singularities and that, for any initial conditions, provides a bounding set with guarantees of containing the actual (unknown) rotation matrix. The sensor readings are assumed to be corrupted by bounde...

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...