Results 91 to 100 of about 188,665 (188)

Fuzzy adaptive variable impedance control on deformable shield of defecation smart care robot

Biomimetic Intelligence and Robotics
Precise control of the contact force is crucial in the application of non-wearable defecation smart care (DSC) robot. A deformable shield equipped with a pressure sensing function is designed, with a bending angle that can be adjusted according to ...
Lingling Chen, Pengyue Lai, Yanglong Wang, Yuxin Dong   +3 more
doaj   +1 more source

Analysis and mitigation of circulating currents for grid-forming DERs during parallel black-start in islanded systems

International Journal of Electrical Power & Energy Systems
Following a large-scale power outage, grid-forming (GFM) distributed energy resources (DERs) can facilitate rapid system recovery using parallel black start technology. However, the DER parallel-operation systems (DERPS) may generate circulating currents
Li Sun, Hong Wang, Guangzhong Dong
doaj   +1 more source

A Comparative Case Study of EMG-Driven Controllers in Transtibial Prostheses

IEEE Transactions on Neural Systems and Rehabilitation Engineering
Lower limb amputation greatly affects quality of life by restricting functional mobility. Despite advancements in prosthetic design, powered transtibial prostheses still have limitations in user control and adaptability to dynamic environments.
M. Abdelbar, Faranak Rostamjoud, Anna Lara Armannsdottir, Atli Orn Sverrisson, Kristin Briem, Sigurur Brynjolfsson   +5 more
doaj   +1 more source

Research on variable impedance control of SEA-driven upper limb rehabilitation robot based on singular perturbation method

International Journal of Advanced Robotic Systems
This paper proposes a variable impedance control strategy based on the singular perturbation method to address the challenges of achieving accurate impedance characteristics and mitigating stability degradation in two-degree-of-freedom planar SEA-driven ...
Bingshan Hu, Hao Ren, Zhou Zhou, Fengchen Liu, Hongliu Yu   +4 more
doaj   +1 more source

Research on adaptive impedance control technology of upper limb rehabilitation robot based on impedance parameter prediction

Frontiers in Bioengineering and Biotechnology
Introduction: With the aggravation of aging and the growing number of stroke patients suffering from hemiplegia in China, rehabilitation robots have become an integral part of rehabilitation training.
Yuling Zhang, Yuling Zhang, Tong Li, Tong Li, Haoran Tao, Haoran Tao, Fengchen Liu, Fengchen Liu, Bingshan Hu, Bingshan Hu, Minghui Wu, Hongliu Yu, Hongliu Yu   +12 more
doaj   +1 more source

Repetitive Control of Robotic Joint With Variable Impedance Utilizing Agonist-Antagonist Muscle Pair Structure Based on Virtual Trajectories

IEEE Access
Realizing accurate trajectory-tracking control for flexible robotic joints using a model-free approach is challenging. In this study, the repetitive control based on virtual trajectory, which is a model-free control method proposed for flexible human ...
Kaho Umeda, Yinlai Jiang, Hiroshi Yokoi, Shunta Togo   +3 more
doaj   +1 more source

Novel active function blocks and their applications in frequency filters and quadrature oscillators [PDF]

, 2010
Kmitočtové filtry a sinusoidní oscilátory jsou lineární elektronické obvody, které jsou používány v široké oblasti elektroniky a jsou základními stavebními bloky v analogovém zpracování signálu.
Herencsár, Norbert
core  

Tunable Balun Low-Noise Amplifier in 65nm CMOS Technology [PDF]

, 2014
The presented paper includes the design and implementation of a 65 nm CMOS low-noise amplifier (LNA) based on inductive source degeneration. The amplifier is realized with an active balun enabling a single-ended input which is an important requirement ...
Groinig, M., Sturm, J., Xiang, X.
core   +1 more source

Stability evaluation of rotor/bearing system [PDF]

, 1982
A stability study of rotor/bearing systems is presented. Even though it was limited to study of a fully lubricated bearing subject to oil whirl, and further limited to low eccentricity region for linearity and with only one type of lubricant, it can be ...
Bently, D. E., Muszynska, A.
core   +1 more source

Stability analysis and improvement based on virtual impedance for electrolytic capacitor‐less DC multi‐port converter

Energy Conversion and Economics
The DC multi‐port converter's applications are increasing owing to its favourable features, including variable control mode, high power density, and bi‐directional power supply.
Jiang Chen, Ying Xu, Jiantao Zhang, Can Li, Yang Zeng, Yuyang Li, Zhiguo Wei   +6 more
doaj   +1 more source