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RISRoot Locus Analysis of the Adaptation Process in Active Noise Control for Repetitive Impulses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The popular filteredx leastmean squares (FxLMS) algorithm has been widely adopted in active noise control (ANC) for relatively stationary disturbances. The convergence behavior of the FxLMS algorithm has been well understood ...
Condition Monitoring of Motor-Gear System Dynamics With Rotor and Gear Faults
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An electromechanical system consisting of an electric motor and planetary gear set is modeled and analyzed in this paper. The model integrates various internal excitations including time-varying gear mesh stiffness, nonlinear ...
Modeling and Dynamic Characteristics of Planetary Gear Transmission in Non-inertial System of Aerospace Environment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The traditional research on the dynamics of planetary gear transmission (PGT) is based on the assumption that the support is on the ground. However, the PGT inside the aircraft is spatially moved along with the airframe, ...
A Computationally Efficient Multichannel Active Road Noise Control System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A multichannel active noise control (ANC) system has been developed for a vehicle application, which employs loudspeakers to reduce the lowfrequency road noise. Six accelerometers were attached to the vehicle structure to ...
Combined Feedforward–Feedback Active Control of Road Noise Inside a Vehicle Cabin
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Conventional active control of road noise inside a vehicle cabin generally uses a pure feedforward control system with the conventional filteredx least mean square (FXLMS) algorithm. While it can yield satisfactory noise ...
A Comprehensive Contact Analysis of Planetary Roller Screw Mechanism
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A comprehensive contact analysis model to determine the contact positions and clearances of mating thread surfaces in the planetary roller screw mechanism (PRSM) is proposed in this paper. By introducing a three-dimensional ...
Analysis of a Cycloid Speed Reducer Considering Tooth Profile Modification and Clearance-Fit Output Mechanism
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The load distribution analysis plays a significant role in the performance evaluation of cycloid speed reducer. However, current analytical models usually ignore elastic deformation, clearances, or assembly errors. These ...
Study of Dynamic Model of Helical/Herringbone Planetary Gear System With Friction Excitation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tooth friction is unavoidable and changes periodically in gear engagement. Friction excitation is an important excitation source of a gear transmission system. They are different than the friction coefficients of any two ...
A Practical Estimation of Frequency Response Functions for System Decoupling Indirectly Using a Variable Cross Section Rod
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It is of high importance to be able to decouple a system to obtain the dynamic characteristics of its substructures; however, the necessary frequency response functions (FRFs) of the coupling interface are usually challenging ...
Study on Vibration Characteristics of Fan Shaft of Geared Turbofan Engine With Sudden Imbalance Caused by Blade Off
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Based on the requirements of the dynamic design of geared turbofan (GTF) engines, the vibration characteristic of the fan shaft is investigated. The effect of sudden imbalance caused by blade off, the time-varying meshing ...