繁殖
发表于 2025-3-28 18:09:14
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APNEA
发表于 2025-3-28 20:54:01
Model Reduction of Electric Rotors Subjected to PWM Excitation for Structural Dynamics Design,ulse Width Modulation (PWM) is the control strategy of the traction chain. This signal is composed by a fundamental and numerous harmonics of voltage and current that induce harmonics on the torque signal resulting in huge torque oscillations. It can lead to repeated torsional resonance when coincid
dragon
发表于 2025-3-29 00:23:37
Fast Computation of Laser Vibrometer Alignment Using Photogrammetric Techniques,ithout mass-loading the part. Recently multi-point laser vibrometers consisting of 48 or more measurement channels have been introduced to overcome some of the limitations of scanning systems, namely the inability to measure multiple data points simultaneously. However, measuring or estimating the a
卜闻
发表于 2025-3-29 03:33:12
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RAGE
发表于 2025-3-29 07:23:34
Measuring Aero-Engine Pipe Vibration with a 3D Scanning Laser Doppler Vibrometer,wns. Understanding the vibration behaviour of the accessories is challenging. Their manufacture, assembly and maintenance introduce a large amount of uncertainty to the actual state of the system and they are often of a very complex shape. This can lead to highly three-dimensional operating deflecti
ABHOR
发表于 2025-3-29 13:47:38
,A “Mechanical” Vision of Image-Based Identification methods in Structural Dynamics,as, computer hardware and software..New algorithms for structural dynamics are continuously developed and, frequently, made available in the computer community. On the other hand, experimental set-up is still an issue..This tutorial aims to focus the attention to this aspect, and will cover:.The pro
EVEN
发表于 2025-3-29 18:06:57
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尾巴
发表于 2025-3-29 21:01:58
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乐章
发表于 2025-3-30 02:12:24
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TRACE
发表于 2025-3-30 07:04:19
Method for Selecting Rotor Suspension Design Criteria, internal friction instabilities is described. A rotor model of a test rotor with internal friction is created and used to calculate the test rotor’s critical speeds, mode shapes, Campbell plots, and the rotational speed corresponding to the stability boundary for a nominal set of suspension paramet