Abstract: The paper shows how unstable parametric vibrations of a uniform beam can be controlled. A control law is proposed and it is shown that the beam can be made to vibrate at a present amplitude ...

Abstract: The dynamics of a rigid rotor supported on a flexible circular plate is investigated and it is shown that the arrangement is capable of operating as a tuned free rotor gyroscope. The performance ...

Abstract: The paper examines the performance of a new two axis dynamically tuned gyroscope. Two types of feedback loop are described. In the first design the control force maintains the sensitive element ...

Abstract: A method for minimizing forced harmonic vibration of a rotor-bearing system by the application of external control forces is presented. The frequency of the vibration is assumed known. In cases ...

Abstract: This study investigates the dynamics of a gyroscope rotor, supported on a “heavy” elastic suspension, using a mathematical model which allows the gyroscope to be treated as a two-degree-of-freedom ...

Abstract: The paper shows that the ideally tuned Hooke’s joint gyroscope is capable of operating as a gyrocompass. The dynamic response of the compass is examined in detail and its accuracy as a ...

Abstract: This paper investigates the dynamics of a novel “multisensor” comprising a two-axis gyroscope and a single-axis linear accelerometer. The theoretical analysis indicates that the gyroscope has two ...

Abstract: This paper considers the vibration control of a single degree of freedom mass-spring-damper system when subjected to an arbitrary, unmeasurable disturbance. The idea of a disturbance observer is ...