This project takes XX unit as the analysis object to study first-order vibration wind speed of turbine under shutdown vibration. The vortex-induced response is calculated and displacement resonant by fluid-solid coupling method. above techniques methods are forward-looking advanced in characteristics domestic turbines. On basis fluid dynamics analysis, suppression measures studied emphatically....

Aiming at the problem of precision driving and vibration suppression for sensitive payloads on-orbit, this paper proposes a new compliant platform based on an embedded superstructure smart material actuator. Firstly, main structure is designed optimized to achieve expected indicators via response surface method. Then, reduction mechanism with studied by establishing equivalent model. Following ...

This study proposes a novel frame anti-vibration controller for position sensorless PMSM drive application. This controller is called specific component reduction controller (SCRC). SCRC can function without an accelerometer and can achieve speed variable control. This study mainly comprises the following phases. First, the position sensorless control method will be provided. Second, the frame ...

ENGINEERING NOTES are short manuscripts describing new developments or important results of a preliminary nature. These Notes cannot exceed 6 manuscript pages and 3 figures; a page of text may be substituted for a figure and vice versa. After informal review by the editors, they may be published within a few months of the date of receipt. Style requirements are the same as for regular contribut...

High-precision oscillators have significant applications in modern communication and navigation systems, radars, and sensors mounted in unmanned aerial vehicles, helicopters, missiles, and other dynamic platforms. These systems must provide their required performance even when subject to mild to severe dynamic environmental conditions. Oscillators often can provide sufficiently low intrinsic ph...

A method for suppressing residual vibrations in flexible systems is presented and experimentally demonstrated. This method is based on the preconditioning of the inputs to the system using Infinite Impulse Response (IIR) digital filters. The proposed method is robust to variations of the system dynamic parameters and simple to implement in practice. The method is experimentally verified using a...

This paper applies fractional order PID controller to torsional system’s backlash vibration suppression control, in which the order k of D controller can not only be integer but also be any real number. In order to improve control system’s robustness against backlash non-linearity, several methods have been proposed. However their design processes are very complicated. In this paper, a clear an...

This paper considers the use of a tuned inerter damper (TID) system for suppressing unwanted cable vibrations. The TID consists of an inerter, a device that exerts a force proportional to relative acceleration, coupled with a parallel spring and damper. It may be thought of as similar to a tuned-mass-damper, but requiring two terminals. As a two terminal device, the performance of the TID is co...