Results 21 to 30 of about 351,760 (158)

Prediction and Sound Quality Analysis of Tire Pattern Noise Based on System Identification by Utilizing an Optimal Adaptive Filter

open access: yesApplied Sciences, 2019
Identifying the cause of vehicle noise is a basic requirement for the development of low-noise vehicles. The tire pattern noise depends on the tire itself and causes complex and unpredictable sounds.
Sang-Kwon Lee   +3 more
doaj   +1 more source

A New Method for Active Cancellation of Engine Order Noise in a Passenger Car

open access: yesApplied Sciences, 2018
This paper presents a novel active noise cancellation (ANC) method to reduce the engine noise inside the cabin of a car. During the last three decades, many methods have been developed for the active control of a quasi-stationary narrowband sinusoidal ...
Sang-Kwon Lee   +3 more
doaj   +1 more source

Analysis of Vibration Characteristics of Centrifugal Pump Mechanical Seal under Wear and Damage Degree

open access: yesShock and Vibration, 2021
Mechanical seal is a kind of shaft sealing equipment. Face wear is one of the main causes of mechanical seal failure. Mechanical seal condition is also related to the reduction of energy consumption and carbon emission.
Yin Luo   +5 more
doaj   +1 more source

Vibration Source Signal Separation of Rotating Machinery Equipment and Robot Bearings Based on Low Rank Constraint

open access: yesApplied Sciences, 2021
With the development of industrial robots and other mechanical equipment to a higher degree of automation, mechanical systems have become increasingly complex. This represents a huge challenge for condition monitoring.
Zhiyang He   +4 more
doaj   +1 more source

Analysis and selection of eigenvalues of vibration signals in cutting tool milling

open access: yesAdvances in Mechanical Engineering, 2022
This paper designs an experimental scheme to monitor the tool wear state by extracting the vibration signal of tool wear. The data acquisition and signal processing hardware includes a T-type cutting tool, a vibration sensor, an amplifier, a data ...
Liqiang Wang   +3 more
doaj   +1 more source

Proof-of-principle demonstration of vertical gravity gradient measurement using a single proof mass double-loop atom interferometer [PDF]

open access: yes, 2018
We demonstrate a proof-of-principle of direct Earth gravity gradient measurement with an atom interferometer-based gravity gradiomter using a single proof mass of cold 87 rubidium atoms.
Bidel, Yannick   +5 more
core   +2 more sources

Fault identification of high voltage circuit breaker trip mechanism based on PSR and SVM

open access: yesIET Generation, Transmission & Distribution, 2023
The trip mechanism is a weakness in circuit breakers. Traditional fault identification based on the coil current is difficult to report early mechanical defects such as coil‐plunger jam.
Jiangjun Ruan   +5 more
doaj   +1 more source

On a Stochastic Regularization Technique for Ill-Conditioned Linear Systems

open access: yesOpen Engineering, 2019
Knowledge about the input–output relations of a system can be very important in many practical situations in engineering. Linear systems theory comes from applied mathematics as an efficient and simple modeling technique for input–output systems ...
Moura Henrique Gomes   +3 more
doaj   +1 more source

Online Analysis of Nonlinear Vibration Characteristics of Milling Chatter

open access: yesJournal of Harbin University of Science and Technology, 2018
In order to analyze the nonlinear dynamic behavior of the milling chatter,firstly to analyze the varying depths of cut during milling stationary vibration signal the vibration signal and bred flutter vibration signal nonlinear characteristics based on ...
WU Shi   +4 more
doaj   +1 more source

Vibration signal acquisition and computer simulation detection of mechanical equipment failure

open access: yesNonlinear Engineering, 2022
The author in order to solve the problem of optimizing the accuracy of mechanical equipment failure detection proposes a vibration signal collection and computer simulation detection for mechanical equipment failure. Using wavelet domain Wiener filtering-
Wang Yonggang   +3 more
doaj   +1 more source

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