Results 51 to 60 of about 13,866,830 (310)

POSITION CONTROL OF VTOL SYSTEM USING ANFIS VIA HARDWARE IN THE LOOP

Jurnal Ilmiah SINERGI, 2021
Electric motors have been widely applied in various equipment. One application is found in Unmanned Aerial Vehicles (UAVs). An electric motor speed control system that can balance the aircraft's position is one of the mandatory features that must be ...
Hari Maghfiroh, Chico Hermanu, Vernanda Sitorini Zul Hizmi   +2 more
doaj   +1 more source

Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari, Regina Hadi Putri, Fatimah Assyifa, Judith Spijkerman, Gertjan Johannes Kaspers, Susi Susanah   +5 more
wiley   +1 more source

Cross-Saturation Effects in IPM Motors and Related Impact on Sensorless Control [PDF]

, 2006
Permanent-magnet-assisted synchronous reluctance motors are well suited to zero-speed sensorless control because of their inherently salient behavior. However, the cross-saturation effect can lead to large errors on the position estimate, which is based ...
Pastorelli, Michele Angelo, Michele Pastorelli, Paolo Guglielmi, Guglielmi, Paolo, Vagati, Alfredo, Alfredo Vagati   +5 more
core   +2 more sources

Tracking-Differentiator-Based Position and Acceleration Feedback Control in Active Vibration Isolation with Electromagnetic Actuator

, 2023
In order to improve the performance of the active vibration isolation system (AVIS) with electromagnetic actuator, several problems of vibration control are studied.
Chunhui Dai, Cuicui Huang, Yang Yang, Zhiqiang Long   +3 more
core   +1 more source

Enhanced command filtered control with extended state observer for dual‐motor servo mechanisms considering backlash and friction

IET Control Theory & Applications
A dual‐motor servo mechanism is a high‐order and strong‐coupling system with unknown nonlinearity, which brings challenges to controller design to realize high‐performance tracking and synchronization. This article proposes a finite‐time command filtered
Xiang Wang, Hanzhong Liu, Lei Zhang, Yang Gao, Yifei Wu   +4 more
doaj   +1 more source

Nonlinear pd controllers with gravity compensation for robot manipulators

Cybernetics and Information Technologies, 2014
A Nonlinear Proportional-Derivative (NPD) controller with gravity compensation is proposed and applied to robot manipulators in this paper. The proportional and derivative gains are changed by the nonlinear function of errors in the NPD controller.
Huang Jianfeng, Yang Chengying, Ye Jun
doaj   +1 more source

Bone Mineral Density After Contemporary Treatment for Acute Lymphoblastic Leukaemia: A Matched Cross‐Sectional Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Reduced bone mineral density (BMD) has been reported in survivors of childhood and young adult acute lymphoblastic leukaemia (ALL); however, data from cohorts treated with contemporary protocols and including matched controls remain limited.
Karen Schow Jensen, Mette Tiedemann Skipper, Niels Holtum Birkebæk, Kjeld Schmiegelow, Thomas Leth Frandsen, Bente Langdahl, Rikke Beck Jensen, Asger Roer Pedersen, Christian Mølgaard, Liv Andrés‐Jensen, Birgitte Klug Albertsen   +10 more
wiley   +1 more source

Nonlinear Position Control Using Only Position Feedback under Position Errors and Yaw Constraints for Air Bearing Planar Motors

Mathematics, 2020
In this paper, we propose a nonlinear position control using only position feedback to guarantee the tolerances for position tracking errors and yaw. In the proposed method, both mechanical and electrical dynamics are considered.
Wonhee Kim, Donghoon Shin, Youngwoo Lee
doaj   +1 more source

Chemotherapy for Spinal Cord Intramedullary Pediatric Low‐Grade Glioma—A Systematic Literature Review

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric intramedullary low‐grade gliomas (PIMLGGs) are rare neoplasms that present unique clinical and management challenges. Although surgery remains the primary tool for tissue diagnosis and decompression, complete gross‐total resection is frequently unfeasible due to the infiltrative nature of these lesions.
Olga M. Sergeenko, Segev Gabay, Jonathan Roth, Amit Ringel, Rina Dvir, Shlomi Constantini   +5 more
wiley   +1 more source

Position-heading quadrotor control using LPV techniques

, 2019
This work presents a solution for the position-heading control problem of a small quadrotor. The main idea of this paper is to exploit the advantages of the Linear Parameter Varying (LPV) control approach, together with a feedback linearization approach,
Puig Cayuela, Vicenç, Morcego Seix, Bernardo, Trapiello Fernández, Carlos   +2 more
core   +1 more source