Results 21 to 30 of about 17,701 (214)

Focal plane transport assembly for the HEAO-B X-ray telescope [PDF]

, 1979
The High Energy Astronomy Observatory - Mission B (HEAO-B), an earth orbiting X-ray telescope facility capable of locating and imaging celestial X-ray sources within one second of arc in the celestial sphere, is considered.
Allard, P. D., Brissette, R., Keller, F., Strizhak, E., Wester, E.   +4 more
core   +1 more source

Cable-Driven Actuation for Highly Dynamic Robotic Systems

, 2018
This paper presents design and experimental evaluations of an articulated robotic limb called Capler-Leg. The key element of Capler-Leg is its single-stage cable-pulley transmission combined with a high-gap radius motor.
Hutter, Marco, Hwangbo, Jemin, Kolvenbach, Hendrik, Tsounis, Vassilios   +3 more
core   +1 more source

Automation of Surgical Workflow Recognition: Unveiling the Surgical Instrument Kinematics that Underly Robot‐Assisted Prostatectomy Procedures

Advanced Intelligent Discovery, EarlyView.
Automated procedural analysis is recognized as one of the major game changers for robotic surgery. Meaning digital analysis needs to replace the manual assessments that set todays standard. Mechanical robotic‐instrument tracking enables the derivation of quantitative kinematic metrics that support behavior‐based workflow segmentation into distinct ...
Kateryna Pirkovets, Matthias N. van Oosterom, Vera A. Ottens, Henk G. van der Poel, Fijs W. B. van Leeuwen   +4 more
wiley   +1 more source

Drive system for the retraction/extension of variable diameter rotor systems [PDF]

, 2003
A drive system for a variable diameter rotor (VDR) system includes a plurality of rotor blade assemblies with inner and outer rotor blade segments. The outer blade segment being telescopically mounted to the inner blade segment.
Gmirya, Yuriy
core   +1 more source

PANIC: the new panoramic NIR camera for Calar Alto

, 2008
PANIC is a wide-field NIR camera, which is currently under development for the Calar Alto observatory (CAHA) in Spain. It uses a mosaic of four Hawaii-2RG detectors and covers the spectral range from 0.8-2.5 micron(z to K-band).
Alter, M., Baumeister, H., Fernandez, M., Fried, J., Gomez, J. F. Rodriguez, Helmling, J., Huber, A., Laun, W., Lenzen, R., Mall, U., Mengual, J. Ibanez, Naranjo, V., Ramos, J., Rohloff, R., Segura, A. Garcia, Storz, C., Ubierna, M., Vazquez, M. C. Cardenas, Wagner, K.   +18 more
core   +1 more source

Maneuverable Multilegged Locomotion through Anisotropically Arranged Soft Backbones in a Single‐Actuator Modular Miniature Robot

Advanced Intelligent Systems, EarlyView.
A modular eight‐legged robot exploits anisotropically oriented soft I‐beam backbones to transmit vibration from a single unbalanced‐mass actuator, producing frequency‐dependent multimodal gaits. A pseudo‐rigid‐body model enables high‐fidelity MuJoCo simulation, while Bayesian parameter identification and reinforcement learning yield robust control ...
Yiğit Yaman, Burak Arslan, Ömer Çağrı Ergin, Daniel M. Aukes, Onur Özcan   +4 more
wiley   +1 more source

链条谐波传动中刚轮齿廓曲线方程的研究

Jixie chuandong, 2004
The harmonic drive is regarded as a great breakthrough of the mechanical drive. But the harmonic gear drive has some insurmountable defects. This paper introduces a new type of harmonic drive--the harmonic chain drive.
宋冠英, 陈树昌
doaj  

Study on Status and Problem Research of Harmonic Gear Drive

Jixie chuandong, 2020
The development and application of harmonic gear drive in recent years are briefly reviewed，the development of gear tooth profile and the main factors affecting the life of reducer are mainly expounded.
Xiang Zhenlin, Li Ting, Yang Lin, Shang Yingrong   +3 more
doaj  

The professionalisation of teachers in France at a time of new reform: A comparative perspective of teacher‐trainers and students in pre‐service training

British Educational Research Journal, EarlyView.
Abstract The latest reform of initial teacher education (ITE) in France, introduced in 2021, aims to make teacher training less theoretical and therefore more ‘practical’. New elements, such as the replacement of the Écoles Supérieures pour le Professorat et l'Éducation (ÉSPÉs) by the Instituts Nationaux Supérieurs du Professorat et de l'Education ...
Eric Maleyrot, Thérèse Perez‐Roux
wiley   +1 more source

Electromechanical Coupling Dynamic Characteristics of Differential Speed Regulation System Considering Inverter Harmonics Under Variable Operating Conditions

IEEE Access, 2022
The differential speed regulation system driven by inverters, motors and differential gear trains is a complex electromechanical system that achieves speed regulation and energy savings efficiently and economically.
Dianrui Wang, Fuchun Yang, Xiaofeng Jiang, Shuai Shi, Songhua Ma   +4 more
doaj   +1 more source