Results 11 to 20 of about 844,475 (305)

Effect of Tempering Temperature on Microstructure and Mechanical Properties of Cr-Ni-Mo-V Rotor Steel. [PDF]

Materials (Basel)
In this paper, we investigated the effects of the matrix and precipitates in Cr-Ni-Mo-V rotor steel on its mechanical properties after water quenching and tempering (450–700 °C).
Zhao C, Zhang X, Liang X, Song G, Wang B, Guo L, Zhang P, Zhang S.   +7 more
europepmc   +2 more sources

Model and Property Analysis for a Ball-Hinged Three-Degree-of-Freedom Piezoelectric Spherical Motor [PDF]

Sensors
Multi-degree-of-freedom piezoelectric motors have the advantages of high torque and resolution, simple structure, and direct drive, which are widely used in robot wrist joints, deep-sea mechanisms, medical equipment, and space mechanisms.
Zhenyu Wang, Jun Li, Wanbing Liu, Guanshuai Jia, Ban Wang   +4 more
doaj   +2 more sources

Development of Control Method for Outer‐Rotor Spherical Actuator

Electrical Engineering in Japan, 2014
SUMMARYConventional multi‐degree‐of‐freedom drive systems need many single‐degree‐of‐freedom actuators, but this makes the structure larger and heavier. The development of a spherical actuator should reduce the number of actuators, but the low torque and narrow rotation range are still problems.
Masahito Tsukano, Katsuhiro Hirata, Shuhei Maeda, Noboru Niguchi   +3 more
openaire   +2 more sources

Design and Optimization of a Bennett–Spherical Scissor Mechanism Suitable for Driving Aerial–Aquatic Rotor Deformation

Actuators
This paper aims to design a deformable mechanism to drive amphibious rotor blade deform from an aerial shape to an aquatic one. The Bennett four-bar and spherical four-bar mechanisms are used as the basic units (B unit and S unit) to form the Bennett ...
Chengrong Du, Dongbiao Zhao
doaj   +3 more sources

Modeling the process of finishing the spherical rotor of a ball gyroscope

Izvestiâ vysših učebnyh zavedenij. Priborostroenie, 2021
S. Fedorovich
openaire   +2 more sources

MAS NMR with a spherical rotor in a 10 mm NMR tube

Journal of Magnetic Resonance Open
Magic-angle spinning (MAS) partially averages anisotropic NMR interactions to improve spectral resolution of solid samples. MAS requires the sample to be spun precisely about an angle of 54.74° with respect to the magnetic field.
Hanna Wili, Nicholas Alaniva, Snædís Björgvinsdóttir, Alexander B. Barnes   +3 more
doaj   +2 more sources

Rotor Posture Measurement of a Spherical Motor applying Pattern Matching of Magnetic Field

Nihon AEM Gakkaishi, 2021
Daichi Seta, A. Gofuku, T. Yano, N. Kasashima   +3 more
exaly   +2 more sources

MODELING OF INERTIA MOMENTS FORMATION FOR ELECTROSTATIC GYROSCOPE ROTORS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research.The paper proposes principles, conditions and technical solutions of the creation process for moments of inertia of spherical rotors based on the mass redistribution of functional coatings formed on the rotor surface.
O. S. Yulmetova, A. G. Scherbak
doaj   +1 more source

Analysis of vibration characteristics of spherical bearing of three-degree-of-freedom motor with liquid suspension

Journal of Low Frequency Noise, Vibration and Active Control, 2021
Based on the liquid suspension three-degree-of-freedom motor, the three-degree-of-freedom dynamic model of spherical bearing is established. The spatial distribution of the radial electromagnetic force is calculated.
Zheng Li, Feihong Yue, Qunjing Wang
doaj   +1 more source

A novel spherical ultrasonic motor with wire stators and measuring torque and preload via a new method

Scientific Reports, 2023
The present study introduces a multi-degree-of-freedom (MDOF) ultrasonic motor, which is capable of driving a spherical rotor using spiral wire stators and a piezoelectric stack actuator. Wire stators and piezoelectric stack actuators enable the proposed
Seyed Hassan Jahantab, Yousef Hojjat, Behzad Ghavami Namin, Mohammad Shirkosh   +3 more
doaj   +1 more source