Results 71 to 80 of about 188,665 (188)

Pulse counting circuit which simultaneously indicates the occurrence of the nth pulse Patent [PDF]

, 1966
RC transistor circuit to indicate each pulse of pulse train and occurrence of nth ...
Rehage, J. R.
core   +1 more source

Spatial Multiplexing of QPSK Signals with a Single Radio: Antenna Design and Over-the-Air Experiments

, 2016
The paper describes the implementation and performance analysis of the first fully-operational beam-space MIMO antenna for the spatial multiplexing of two QPSK streams.
Austin, Andrew C. M., Burg, Andreas, Mosig, Juan R., Perruisseau-Carrier, Julien, Yousefbeiki, Mohsen   +4 more
core   +1 more source

Ganged series potentiometer mixer networks [PDF]

A ganged potentiometer with the interesting property of a constant 10k ohm or greater series impedance for all rotations of the shaft was rediscovered.
Burhans, R. W.
core   +1 more source

Using a side-branched volume to tune the acoustic field in a looped-tube travelling-wave thermoacoustic engine with a RC load [PDF]

, 2017
Travelling-wave thermoacoustic engine utilises a compact acoustic network to obtain a right time-phasing between the acoustic velocity and pressure oscillations within the regenerator to force gas parcels to experience a Stirling-like thermodynamic cycle.
Al-Kayiem, Ali, Yu, Zhibin
core   +1 more source

Increasing efficiency of switching type regulator circuits Patent [PDF]

, 1968
Switching series regulator with gating control ...
Clapp, W. M.
core   +1 more source

A 24-GHz SiGe Phased-Array Receiver—LO Phase-Shifting Approach [PDF]

, 2005
A local-oscillator phase-shifting approach is introduced to implement a fully integrated 24-GHz phased-array receiver using an SiGe technology. Sixteen phases of the local oscillator are generated in one oscillator core, resulting in a raw beam-forming ...
Guan, Xiang, Hajimiri, Ali, Hashemi, Hossein, Komijani, Abbas   +3 more
core   +1 more source

Modified Dynamic Movement Primitive-Based Closed Ankle Reduction Technique Learning and Variable Impedance Control for a Redundant Parallel Bone-Setting Robot

Machines
Traditional fracture reduction relies heavily on the surgeon’s experience, which hinders the transmission of skills. This specialization bottleneck, coupled with the high demands on physical strength, significantly limits the efficiency of daily ...
Zhao Tan, Yahui Zhang, Jiahui Yuan, Xu Song, Jialong Zhang, Guilin Wen, Xiaoyan Hu, Hanfeng Yin   +7 more
doaj   +1 more source

Fast impedance matching for the ion cyctron resonance heating system based on capacitors at the EAST tokamak [PDF]

EPJ Web of Conferences
This paper presents an impedance matching system based on real-time feedback control, designed to address impedance mismatching issues in radio frequency (RF) systems.
Guo Yaoyao, Liu Lunan, Zhang Xinjun, Qin Chengming, Zhang Wei, Chen Qingqing   +5 more
doaj   +1 more source

Bio-Signal-Guided Robot Adaptive Stiffness Learning via Human-Teleoperated Demonstrations

Biomimetics
Robot learning from human demonstration pioneers an effective mapping paradigm for endowing robots with human-like operational capabilities. This paper proposes a bio-signal-guided robot adaptive stiffness learning framework grounded in the conclusion ...
Wei Xia, Zhiwei Liao, Zongxin Lu, Ligang Yao   +3 more
doaj   +1 more source

Hammerstein Adaptive Impedance Controller for Bionic Wrist Joint Actuated by Pneumatic Muscles

IEEE Access, 2019
For the nonlinear, time-variable and unpredictable environment (such as the manipulator workspace that has many random and moveable obstacles), a Hammerstein adaptive (HA) impedance controller based on a Hammerstein impedance model is proposed in this ...
Hui Yang, Xifeng Gao, Yang Chen, Lina Hao   +3 more
doaj   +1 more source