Abstract The motion of a toppling iPad is analyzed in detail. Measurements angular velocity and linear acceleration were made for about the edges corners. From analysis velocity, position center mass gyration radii determined. accelerometer was measured using both centrifugal Euler acceleration, with latter measurement providing more accurate data. This experiment could be used first year unive...

A noninvasive pulse-tracking technique has been exploited to observe the time-resolved motion of an ultrashort light pulse within an integrated optical microresonator. We follow a pulse as it completes several round trips in the resonator, directly mapping the resonator modes in space and time. Our time-dependent and phase-sensitive measurement provides direct access to the angular group and ph...

This paper describes a Kalman filter for the real-time estimation of a rigid body orientation from measurements of acceleration, angular velocity and magnetic field strength. A quaternion representation of the orientation is computationally effective and avoids problems with singularities. The nonlinear relationship between estimated orientation and expected measurement prevent the usage of a c...

This paper proposes a technique for the on-line detection of incipient engine misŽre based on multiple feature fusion and fuzzy pattern recognition. The technique requires the measurement of instantaneous angular velocity signals. By processing the engine dynamics model equation in the angular frequency domain, four dimensionless features for misŽre detection are deŽned, along with fast feature...

It is well-known that the successful implementation of current sliding-mode guidance laws relies on two key points: one prior knowledge upper bound target’s maneuver, and other accurate measurement motion information. The truth maneuver usually difficult to acquire can only be roughly estimated. Measurements are often affected by noise physical limitations onboard sensor. This paper presents an...

The vestibular semicircular canals are internal sensors that signal the magnitude, direction, and temporal properties of angular head motion. Fluid mechanics within the 3-canal labyrinth code the direction of movement and integrate angular acceleration stimuli over time. Directional coding is accomplished by decomposition of complex angular accelerations into 3 biomechanical components-one comp...

This work investigates a new error source for angular velocity or attitude-based transfer alignment, which is caused by the coupling influence of dynamic flexure with ship angular motion. Most traditional studies do not consider this coupling error, as they often assume that dynamic flexure and ship angular motion are uncorrelated. However, the correlation between the dynamic flexure and the sh...