Results 41 to 50 of about 25,842 (241)

Robust DOBC for Stabilization Loop of a Two-Axes Gimbal System

IEEE Access, 2019
In this paper, a disturbance compensation strategy based on disturbance observer control (DOBC) is proposed to solve parameter perturbation, friction, coupling and external turbulence for two-axes gimbal control system.
Wei Ren, Qi Qiao, Kang Nie, Yao Mao
doaj   +1 more source

Full- & Reduced-Order State-Space Modeling of Wind Turbine Systems with Permanent-Magnet Synchronous Generator [PDF]

, 2018
Wind energy is an integral part of nowadays energy supply and one of the fastest growing sources of electricity in the world today. Accurate models for wind energy conversion systems (WECSs) are of key interest for the analysis and control design of ...
Hackl, Christoph M., Hohmann, Sören, Jané-Soneira, Pol, Pfeifer, Martin, Schechner, Korbinian   +4 more
core   +3 more sources

Modulation strategy of dynamic voltage restorer based on dual-feedforward active disturbance rejection compound controller

Frontiers in Energy Research
Given the contradiction between compensating speed and compensating overshoot in traditional Proportional Integral (PI) control of Dynamic Voltage Restorer (DVR), A Feedforward compensation-active Disturbance Rejection Control (FC-ADRC) strategy based on
Langchen Huang, Weiling Liu, Ning Zhang, Qingyun Yan, Xinwei Wei   +4 more
doaj   +1 more source

Multiharmonic vector rf voltage control for wideband cavities driven by vacuum tube amplifiers in a rapid cycling synchrotron

Physical Review Accelerators and Beams, 2019
Beam loading compensation in the rf cavities is a key for acceleration of high-intensity beams in the 3 GeV rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC). Since we employ wideband magnetic alloy rf cavities for
Fumihiko Tamura, Yasuyuki Sugiyama, Masahito Yoshii, Masanobu Yamamoto, Chihiro Ohmori, Masahiro Nomura, Taihei Shimada, Katsushi Hasegawa, Keigo Hara, Masashi Furusawa   +9 more
doaj   +1 more source

Reduced Order Compensator for Feedforward Regulators

IFAC Proceedings Volumes, 1989
Abstract An approach to the design of feedforward regulators by parameter estimation techniques is presented. Given a linear minimum phase system and a prespecified feedback, optimal feedforward filter design is straightforward. A method to solve for it with any input signal is given, allowing the compensator parameters for a prescribed order to be ...
R.H. Milocco, C.H. Muravchik
openaire   +1 more source

Oral Dosed Organo‐Silica Nanoparticles Restore Glucose Homeostasis and β‐Cell Function in Diabetes Rats

Advanced Functional Materials, EarlyView.
An oral nanoplatform, MOP@T@D, which can maintain glucose homeostasis and restore islet β cells in diabetic rats is developed. It achieves efficient intestinal absorption and liver‐targeted delivery. The nanoparticle disintegrates only in response to hyperglycemia to release insulin on demand and provides antioxidant protection through selenoprotein ...
Chenxiao Chu, Mingli Wei, Che Bian, Xiaoshuang Bi, Yaxin Deng, Peifu Xiao, Jiansong Zhao, Yuying Wang, Haibing He, Jingxin Gou, Tian Yin, Xing Tang, Li Yang, Hongbo Zhang, Yu Zhang   +14 more
wiley   +1 more source

Towards a personal best : a case for introducing ipsative assessment in higher education [PDF]

, 2011
The central role that assessment plays is recognised in higher education, in particular how formative feedback guides learning. A model for effective feedback practice is used to argue that, in current schemes, formative feedback is often not usable ...
Hughes, Gwyneth
core   +3 more sources

Smart Closed‐Loop Systems in Personalized Healthcare: Advances and Outlook

Advanced Materials Technologies, EarlyView.
A smart closed‐loop e‐textile integrates multimodal sensing, onboard processing, wireless communication, and wearable power to enable real‐time physiological/biochemical monitoring and feedback‐controlled therapy. ABSTRACT Smart textiles represent a revolutionary frontier in healthcare, seamlessly blending fabric and advanced technologies to create ...
Safoora Khosravi, Sang Won Lee, Mohammad Abrar Uddin, Sina Hassanpoor, Neha Suvindran, Katherine Le, Harun Arkaz, Harishkumar Narayana, Saeid Soltanian, Danial Khorsandi, Negar Hosseinzadeh Kouchehbaghi, Taeil Kim, Yangzhi Zhu   +12 more
wiley   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Pure Disturbance Sliding-Mode Feedback Control Based on Disturbance Observation for CCD-Assisted Line-of-Sight Stabilization

IEEE Photonics Journal
Excellent disturbance rejection ability is essential for a photoelectric tracking system (PTS) based on the Charge-Couple Device (CCD) sensor, which is a premise guarantee for obtaining highly accurate tracking, especially under the condition of moving ...
Yong Luo, Yi Cheng, Yongmei Huang, Qiongyan Wu, Dong He, Ge Ren, Guan Wang, Shi Zheng   +7 more
doaj   +1 more source