This paper presents a very simple, yet very effective method for combining measurements from a gyro with measurements from wheel encoders (odometry). Sensor-fusion of this kind has been done before, usually by means of a statistical model that describes the behavior of the gyro and the behavior of the odometry component. However, because these systems are based on models, they cannot anticipate...

Finite electron gyro-radius influences on the trapping and charge density distribution of holes limited transverse extent are calculated analytically explored by numerical orbit integration in low to moderate magnetic fields. Parallel is shown depend upon gyro-averaged potential energy give rise deficit. Both types average expressible as convolutions with perpendicular Gaussians width equal the...

To overcome the effect of temperature on laser gyro zero bias and to stabilize the laser gyro output, this study proposes a modified radial basis function neural network (RBFNN) based on a Kohonen network and an orthogonal least squares (OLS) algorithm. The modified method, which combines the pattern classification capability of the Kohonen network and the optimal choice capacity of OLS, avoids...

The theory, design and experimental results of a wideband 140 GHz, 1 kW pulsed gyro-traveling wave amplifier are presented. The gyro-TWA operates in the HE(0,6) mode of an overmoded quasi-optical waveguide using a gyrating electron beam. The electromagnetic theory, interaction theory, design processes and experimental procedures are described in detail. At 37.7 kV and 2.7 A beam current, the ex...

Experimental turbulence and transport characteristics in DIII–D plasmas have been compared with similar quantities calculated from gyro-kinetic and gyro-fluid turbulence simulations. Turbulent radial correlation lengths ∆r from DIII–D L–mode plasmas scale as 5 to 10 ρs (ρs = ion gyro-radius evaluated using the electron temperature) and are independent of the poloidal magnetic field. Comparisons...

We present two results on attitude estimation using vector and rate gyro measurements, when both sets of measurements are biased. The first result concerns an observer for attitude and gyro bias that has previously been presented by Hamel and Mahony, and by Mahony, Hamel, and Pflimlin, with proven almost-global stability results when either (i) the reference vectors in the inertial frame are st...

Q: In my design course in aerospace engineering, my group is building an unmanned aerial vehicle (UAV), which means the aircraft must fly on its own. My task is to choose a gyro for the aircraft to measure angular rates about the aircraft axes. The problem is that when I look at the spec sheet for gyros there are many numbers that I do not know how to interpret. Can someone at IEEE Control Syst...

In air crafts, missiles and ships, during their motion, the sensors are prone to undergo lot of vibrations and shocks. Because of their sensitivity to these environments they malfunction. In order to avoid this situation all the sensors are modelled and analysed at the ground for different parameters viz. temperature, vibration and shock etc. A Ring Laser Gyro (RLG) is used for sensing the angl...

High-power high-frequency radio waves beamed into the ionosphere cause plasma turbulence, which can accelerate electrons. These electrons collide with the F-layer neutral oxygen causing artificial optical emissions identical to natural aurora. Pumping at electron gyro-harmonic frequencies has special significance as many phenomena change their character. In particular, artificial optical emissi...