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RISActive Vibration Control of Rotating Machinery Using Piezoelectric Actuators Incorporating Flexible Casing Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The modern trend toward lighter and more flexible designs in rotating machinery brings with it increasing demands for ways to dissipate the excess energy transferred to such structures by the ...
Theory and Test Correlation for Laminate Stacking Factor Effect on Homopolar Bearing Stiffness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of the laminate stacking factor on homopolar magnetic bearing performance is examined. Stacked laminates are used on the bearing rotor and in the stator. These laminate stacks have ...
Nonlinear Analysis of Rotor-Bearing Systems Using Component Mode Synthesis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The method of component mode synthesis is developed to determine the forced response of nonlinear, multishaft, rotor-bearing systems. The formulation allows for simulation of system response due ...
Piezoelectric Pushers for Active Vibration Control of Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers has been discussed extensively in the literature. These devices, though effective, are ...
Test and Theory for Piezoelectric Actuator-Active Vibration Control of Rotating Machinery
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The application of piezoelectric actuators for active vibration control (AVC) of rotating machinery is examined. Theory is derived and the resulting predictions are shown to agree closely with ...
Hybrid Active Vibration Control of Rotorbearing Systems Using Piezoelectric Actuators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The vibrations of a flexible rotor are controlled using piezoelectric actuators. The controller includes active analog components and a hybrid interface with a digital computer. The computer ...
Active Control of Transient Rotordynamic Vibration by Optimal Control Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Although considerable effort has been put into the study of steady-state vibration control, there are few methods applicable to transient vibration control of rotor-bearing systems. In this paper ...
Active Vibration Control of Rotating Machinery With a Hybrid Piezohydraulic Actuator System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An integrated, compact piezohydraulic actuator system for active vibration control was designed and developed with a primary application for gas turbine aircraft engines. Copper tube was chosen ...
Electromechanical Simulation and Testing of Actively Controlled Rotordynamic Systems With Piezoelectric Actuators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Past research on this subject has treated piezoelectric actuators as ideal devices that have tip displacements proportional to their input voltages, at any instant in time. This assumption ...
A Forced Response Analysis and Application of Impact Dampers to Rotordynamic Vibration Suppression in a Cryogenic Environment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A high speed damper test rig has been assembled at Texas A&M University to develop rotordynamic dampers for rocket engine turbopumps that operate at cryogenic temperatures, such as those ...