Results 1 to 10 of about 5,147 (108)
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2020 Some studies have shown that offset toothed double helical synchronous belts (OTDHSB) have lower transmission noise and higher fatigue life than straight toothed synchronous belts (STSB).
Jianhua GUO +4 more
doaj +5 more sources
MachinesTransmission error (TE) is an important parameter in gear dynamics that has a direct impact on the vibration and noise of gears. Under quasi-static conditions, gear elastic deformation and assembly errors amplify with increasing load, potentially ...
Chengcheng Ji +4 more
doaj +4 more sources
Applied Sciences, 2022 Quasi-static modelling of non-conjugate contact of tooth-modified spur and helical gears has been studied at length, but existing models are hindered by convergence problems and require a brute-force numerical approach.
Maksat Temirkhan +5 more
doaj +2 more sources
On the frame error rate of transmission schemes on quasi-static fading channels [PDF]
2008 42nd Annual Conference on Information Sciences and Systems, 2008 It is known that the frame error rate of turbo codes on quasi-static fading channels can be accurately approximated using the convergence threshold of the corresponding iterative decoder. This paper considers quasi-static fading channels and demonstrates that non-iterative schemes can also be characterized by a similar threshold based on which their ...
Ioannis Chatzigeorgiou +2 more
exaly +3 more sources
MachinesIn a planetary gear system, the planet phasing depends on the number of teeth in the sun and the ring and the number of planets. When the tooth numbers are both multiples of the number of planets, all planets mesh at the same relative position—which is ...
José I. Pedrero +3 more
doaj +2 more sources
Copper damascene process-based high-performance thin-film lithium tantalate modulators [PDF]
Nature CommunicationsThe conversion between electrical and optical signals underpins modern optical communication systems and increasingly requires tight co-integration with electronics at short length scales. Photonic integrated circuits based on thin-film lithium tantalate
Mengxin Lin +10 more
doaj +2 more sources
Development and biomechanical validation of a whole spine–thorax finite element model for quantitative biomechanical analysis [PDF]
PeerJObjective To develop a high-fidelity three-dimensional finite element model of the whole spine–thorax complex based on high-resolution computed tomography (CT) images of a healthy adult male, and to perform initial validation under representative loading
Junhua Li +10 more
doaj +3 more sources
Performance of Quantized Massive MIMO With Fronthaul Rate Constraint Over Quasi-Static Channels
IEEE Access, 2023 We provide a rigorous framework for characterizing and numerically evaluating the error probability achievable in the uplink and downlink of a fully digital quantized multiuser multiple-input multiple-output (MIMO) system.
Yasaman Ettefagh +5 more
doaj +1 more source
Force sensitivity analysis and scale design of Stewart parallel manipulator
Advances in Mechanical Engineering, 2021 There are many indices for evaluating the operational performance of parallel robots, but most of them start from kinematics and rarely pay special attention to the force transmission process.
Yuheng Wang +3 more
doaj +1 more source
Applied Sciences, 2020 The precise mathematical model for the tooth surface and transition surface of spiral bevel gears is derived. Taking a pair of spiral bevel gears of a heavy vehicle as an example of calculation and analysis, a finite element model of spiral bevel gears ...
Yimeng Fu +5 more
doaj +1 more source