scholarly journals On the Practical Stability of Hybrid Control Algorithm With Minimum Dwell Time for a DC–AC Converter

2019 ◽  
Vol 27 (6) ◽  
pp. 2581-2588 ◽  
Author(s):  
Carolina Albea Sanchez ◽  
Oswaldo Lopez Santos ◽  
David. A. Zambrano Prada ◽  
Francisco Gordillo ◽  
Germain Garcia
Keyword(s):  
Dwell Time ◽  
Control Algorithm ◽  
Hybrid Control ◽  
Practical Stability

scholarly journals An Adaptive Hybrid Control Algorithm for Sender-Receiver Clock Synchronization

2020 ◽  
Vol 53 (2) ◽  
pp. 1906-1911
Author(s):  
Marcello Guarro ◽  
Ricardo Sanfelice
Keyword(s):  
Control Algorithm ◽  
Hybrid Control ◽  
Clock Synchronization ◽  
Receiver Clock

scholarly journals A Hybrid Control Algorithm for Gradient-Free Optimization using Conjugate Directions

2020 ◽  
Vol 53 (2) ◽  
pp. 5825-5830
Author(s):  
Alessandro Melis ◽  
Ricardo G. Sanfelice ◽  
Lorenzo Marconi
Keyword(s):  
Control Algorithm ◽  
Hybrid Control ◽  
Conjugate Directions

Application of Hybrid Control Algorithm for Improving Molten Steel Level Control in Mini-Mill Plant

2001 ◽  
Vol 34 (18) ◽  
pp. 53-57
Author(s):  
Dukman Lee ◽  
Yeongsub Kueon ◽  
Sangho Lee
Keyword(s):  
Molten Steel ◽  
Control Algorithm ◽  
Hybrid Control ◽  
Level Control

Normalized Adaptive Hybrid Control Algorithms for Helicopter Vibration with Variable Rotor Speed

2021 ◽  
Author(s):  
Kai Lang ◽  
Pinqi Xia ◽  
Edward C. Smith ◽  
Lina Shang
Keyword(s):  
Control Algorithm ◽  
Hybrid Control ◽  
Active Vibration Control ◽  
Frame Structure ◽  
Control Algorithms ◽  
Flight Performance ◽  
Rotor Speed ◽  
Frequency Tracking ◽  
Harmonic Control ◽  
Active Vibration

Variable rotor speed technology implemented in a helicopter can improve the flight performance, reduce the required power, and increase the flight speed. However, variable rotor speed changes the frequencies of rotor vibratory loads and may produce helicopter fuselage resonance under the excitation of the rotor vibratory loads. Active vibration control (AVC) has been effectively used in vibration reduction of helicopter fuselages. However, the frequency domain control algorithms that are currently used have poor adaptability in controlling vibration with variable frequencies (i.e., during time varying rotor speeds). In order to effectively improve control convergence, adaptability, and effectiveness, the normalized adaptive hybrid control algorithms containing both the normalized adaptive harmonic control algorithm and the normalized frequency tracking algorithm have been presented in this paper. Simulations of AVC with variable frequencies on a dynamically similar frame structure of a helicopter fuselage driven by piezoelectric stack actuators installed on the gearbox support struts show that the normalized adaptive hybrid control algorithms can accurately track the changes in rotor load frequencies and can be effectively used in the AVC of a helicopter with variable rotor speed.

scholarly journals Fuzzy-Based Hybrid Control Algorithm for the Stabilization of a Tri-Rotor UAV

Sensors ◽  
2016 ◽  
Vol 16 (5) ◽  
pp. 652 ◽  
Author(s):  
Zain Ali ◽  
Daobo Wang ◽  
Muhammad Aamir
Keyword(s):  
Control Algorithm ◽  
Hybrid Control

Hybrid adaptive impedance-leader-follower control for multi-arm coordination manipulators

2016 ◽  
Vol 43 (1) ◽  
pp. 112-120 ◽  
Author(s):  
Xiangyu Liu ◽  
Ping Zhang ◽  
Guanglong Du
Keyword(s):  
Control Algorithm ◽  
Control Method ◽  
Hybrid Control ◽  
Impedance Control ◽  
Content Type ◽  
Control Framework ◽  
Coordination System ◽  
Error Accumulation ◽  
Arm Coordination ◽  
Multiple Manipulators

Purpose – The purpose of this paper is to provide a hybrid adaptive impedance-leader-follower control algorithm for multi-arm coordination manipulators, which is significant for dealing with the problems of kinematics inconsistency and error accumulation of interactive force in multi-arm system. Design/methodology/approach – This paper utilized a motion mapping theory in Cartesian space to establish a centralized dynamic leader-follower control algorithm which helped to reduce the possibility of kinematics inconsistency for multiple manipulators. A virtual linear spring model (VLSM) was presented based on a recognition approach of characteristic marker. This paper accomplished an adaptive impedance control algorithm based on the VLSM, which took into account the non-rigid contact characteristic. Experimentally demonstrated results showed the proposed algorithm guarantees that the motion and interactive forces asymptotically converge to the prescribed values. Findings – The hybrid control method improves the accuracy and reliability of multi-arm coordination system, which presents a new control framework for multiple manipulators. Practical implications – This algorithm has significant commercial applications, as a means of controlling multi-arm coordination manipulators that could serve to handle large objects and assemble complicated objects in industrial and hazardous environment. Originality/value – This work presented a new control framework for multiple coordination manipulators, which can ensure consistent kinematics and reduce the influence of error accumulation, and thus can improve the accuracy and reliability of multi-arm coordination system.

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