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Bi-Directional Vector Variable Gain Amplifier for an X-Band Phased Array Radar Application
variable gain phased array complex gain bi-directional amplifier quadrature
2014/12/8
This thesis presents the design, layout, and measurements of a bi-directional amplifier with variable vector (in-phase / quadrature) gain control that will be part of an electronically steered phased ...
Experimental analysis on the variable polarity plasma arc pressure
variable polarity plasma arc arc pressure orthogonal experiment
2011/8/5
Arc pressure is one of the key factors for variable polarity plasma arc(VPPA) and welding pool formation. In this paper, VPPA pressure was measured by pressure transducer and U-tube barometer methods....
Feature Extraction Method Based on Pseudo-Wigner-Ville distribution for Rotational Machinery in Variable Operating Conditions
feature extraction pseudo-wigner-ville distribution
2011/8/4
In the case of fault diagnosis for roller bearings, the conventional diagnosis approaches by using the time interval of energy impacts in time-frequency distribution or the pass-frequencies are based ...
Experimental analysis on the variable polarity plasma arc pressure
variable polarity plasma arc arc pressure orthogonal experiment
2011/8/4
Arc pressure is one of the key factors for variable polarity plasma arc(VPPA) and welding pool formation. In this paper, VPPA pressure was measured by pressure transducer and U-tube barometer methods.
Feature Extraction Method Based on Pseudo-Wigner-Ville distribution for Rotational Machinery in Variable Operating Conditions
feature extraction pseudo-wigner-ville distribution variable operating condition
2011/8/4
In the case of fault diagnosis for roller bearings, the conventional diagnosis approaches by using the time interval of energy impacts in time-frequency distribution or the pass-frequencies are based ...
Multi-objective Optimization Conceptual Design of Product Structure Based on Variable Length Gene Expression
gene expression multi-object optimization conceptual design
2011/8/3
It is a complicated problem for the bottom-to-top adaptive conceptual design of complicated products between structure and function. Reliable theories demand to be found in order to determine whether ...
New Hybrid Parallel Algorithm for Variable-sized Batch Splitting Scheduling with Alternative Machines in Job Shops
variable-sized batch splitting differential evolution alternative machines
2011/8/3
The batch splitting scheduling problem has recently become a major target in manufacturing systems, and the researchers have obtained great achievements, whereas most of existing related researches fo...
A Parametric Analysis of Rotating Variable Thickness Elastoplastic Annular Disks Subjected to Pressurized and Radially Constrained Boundary Conditions
Stress analysis Elastoplasticity Variable thickness Von Mises criterion Nonlinear strain
2009/10/10
This article presents a comprehensive parametric analysis of rotating variable thickness elastoplastic annular disks with inner boundaries subject to pressure or mounted on rigid inclusion. A computer...
Prediction of Fatigue Crack Propagation of Welded Joint under Variable Amplitude Loading
Fatigue Crack Propagation Welded Joint Variable Amplitude Loading
2009/4/1
Fatigue cracks may initiate and propagate at welded joints of marine structures due to repeated wave loading. When fatigue cracks are detected in service condition, it is preferable to have an evaluat...