scholarly journals THE ANALYSIS OF APPROXIMATION CHEBYSHEV FOR FILTERS WITH FINITE AND INFINITE IMPULSE CHARACTERISTICS

2021 ◽  
pp. 22-28
Author(s):  
V.M. Goryaev ◽  
S.S. Mashtykov ◽  
D.B. Bembitov ◽  
A.N. Mandzhieva ◽  
E.B. Lidzhiev ◽  
...  
Keyword(s):  
Impulse Characteristics

Ablation spot area and impulse characteristics of polymers induced by burst irradiation of 1 µm laser pulses

2017 ◽  
Vol 136 ◽  
pp. 46-54 ◽  
Author(s):  
Hisashi Tsuruta ◽  
Oskar Dondelewski ◽  
Yusuke Katagiri ◽  
Bin Wang ◽  
Akihiro Sasoh
Keyword(s):  
Laser Pulses ◽  
Spot Area ◽  
Impulse Characteristics

scholarly journals The active dynamic vibration damper in non-stationary operation of a vibroactive unit

2021 ◽  
pp. 13-17
Author(s):  
D. V. Sitnikov ◽  
◽  
A. A. Burian ◽  
Keyword(s):  
Vibration Isolation ◽  
Low Frequency ◽  
Resonance Region ◽  
Frequency Region ◽  
Vibration Damper ◽  
Passive System ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Dynamic Vibration ◽  
Impulse Characteristics

The paper considers a vibration isolation system, in which a force is applied to the moving mass of the active dynamic vibration damper by an actuator in proportion to the measured value of the base response. The amplitude-frequency and impulse characteristics are plotted depending on the parameters of the system, assuming the actuator without distortion generates the force proportional to the base response. It is shown that the considered vibration isolation system is quite effective in the low-frequency region, including in the resonance region of the passive system, both in stationary and nonstationary modes of vibroactive forces

A Study on the Human Impulse Characteristics with Standing Shooting Posture

2005 ◽  
Vol 297-300 ◽  
pp. 2314-2319 ◽  
Author(s):  
Young Shin Lee ◽  
Young Jin Choi ◽  
Kyu Hyun Han ◽  
Je Wook Chae ◽  
Eui Jung Choi ◽  
...  
Keyword(s):  
Path Analysis ◽  
Human Body ◽  
Impact Analysis ◽  
Human Model ◽  
Constraint Condition ◽  
Standing Posture ◽  
Transfer Path ◽  
Transfer Path Analysis ◽  
Impulse Characteristics ◽  
Simulation Time

The rifle impact on human body is affected by the posture of human for rifling. The interaction human-rifle system influences on a firing accuracy. In this paper, impact analysis of human model for standing posture is carried out. ADAMS code and LifeMOD are used in impact analysis of human model and modeling of the human body, respectively. At the shooting, human model is affected by rifle impact during 0.001 second. Performed simulation time for shooting is 0.3second. Applied constraint condition to human-rifle system is rotating and spherical condition. As the results, displacement of the rifle and transfer path analysis of impact on human model is presented.

Impulse characteristics of smooth objects in bistatic case

1996 ◽  
Vol 10 (12) ◽  
pp. 1613-1622 ◽  
Author(s):  
O.I. Sukharevsky ◽  
V.A. Vasilets
Keyword(s):  
Smooth Objects ◽  
Impulse Characteristics

Impulse characteristics of laser-induced blast wave in monoatomic gases

Shock Waves ◽  
2005 ◽  
pp. 979-982
Author(s):  
X. L. Yu ◽  
T. Ohtani ◽  
A. Sasoh ◽  
S. Kim ◽  
N. Urabe ◽  
...  
Keyword(s):  
Blast Wave ◽  
Impulse Characteristics

scholarly journals Features of the construction of information transfer system which using two-dimensional signals

2019 ◽  
Vol 30 ◽  
pp. 04008
Author(s):  
Andrey Degtyaryov ◽  
Vera Miryanova
Keyword(s):  
Linear Systems ◽  
Information Transfer ◽  
Transfer System ◽  
Two Dimensional ◽  
Orthogonal Functions ◽  
Prototype Filter ◽  
Interchannel Interference ◽  
Low Pass ◽  
Impulse Characteristics ◽  
Coordinate Basis

The article deals with analysis of the causes of intersymbol interference and interchannel interference. It is indicated that physically unrealizable orthogonal bases are used to describe systems and signals. The considered interference occurs due to the loss of orthogonality by the coordinate signals of the bases. Known methods for obtaining systems of orthogonal functions do not allow the formation of a coordinate basis corresponding to physically feasible systems and signals. It is proposed to use equidistant biased impulse characteristics of physically realizable linear systems as basic signals. An orthogonalization method based on determining the weight of orthogonality is described. It is shown that the resulting basis is quasi-orthogonal. It is determined that the conversion of the standart low-pass prototype filter into the filters of channel-forming equipment does not change the conditions of orthogonality. Structural schemes of a modulator and a demodulator of two-dimensional signals are proposed, based on the developed method of orthogonalization.

scholarly journals Rolling Bearing Incipient Fault Detection Based on a Multi-Resolution Singular Value Decomposition

2019 ◽  
Vol 9 (20) ◽  
pp. 4465 ◽  
Author(s):  
Jiesi Luo ◽  
Shaohui Zhang
Keyword(s):  
Fault Detection ◽  
Singular Value Decomposition ◽  
Vibration Signal ◽  
Rolling Bearing ◽  
Singular Value ◽  
Incipient Fault ◽  
Periodic Impulse ◽  
Value Decomposition ◽  
Impulse Characteristics ◽  
Incipient Fault Detection

The periodic impulse characteristics caused by rolling bearing damage are weak in the incipient failure stage. Thus, these characteristics are always drowned out by background noise and other harmonic interference. A novel approach based on multi-resolution singular value decomposition (MRSVD) is proposed in order to extract the periodic impulse characteristics for incipient fault detection. With the MRSVD method, the vibration signal is first decomposed to obtain a group of approximate signals and detailed signals with different resolutions. The first detail signal is mainly composed of noise and the last approximate signal is mainly composed of harmonic interference. Combined with the kurtosis index, the hidden periodic impulse signal will be extracted from the detail signals (in addition to the first detail signal). Thus, the incipient fault detection of a rolling bearing can be fulfilled according to the envelope demodulation spectrum of the extracted periodic impulse signal. The effectiveness of the proposed method has been demonstrated with both simulation and experimental analyses.

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