scholarly journals Comparative Study of Input Shaping with Different Polarities and Modes Selection in Hybrid Control Schemes of a DPTOC System

Author(s):  
M.Z. Mohd Tumari ◽  
M.S. Saealal ◽  
K.H. Ghazali ◽  
M.R. Ghazali
Author(s):  
Z Mohamed ◽  
M O Tokhi

This paper presents investigations into the development of hybrid control schemes for input tracking and end-point vibration suppression of a flexible manipulator system. The dynamic model of the flexible manipulator is derived using the finite element method. Initially, a collocated proportional-derivative (PD) controller utilizing hub angle and hub velocity feedback is developed for control of rigid-body motion of the system. This is then extended to incorporate a non-collocated proportional-integral-derivative (PID) controller and a feedforward controller based on input shaping techniques for control of vibration (flexible motion) of the system. Simulation results of the response of the manipulator with the controllers are presented in time and frequency domains. The performances of the hybrid control schemes are assessed in terms of input tracking and level of vibration reduction in comparison to the PD control. The effectiveness of the control schemes in handling various payloads is also studied. Finally, a comparative assessment of the hybrid control schemes is presented.


2018 ◽  
Vol 35 (5) ◽  
pp. 5317-5327
Author(s):  
Sachin Srivastava ◽  
Aiswarya P.G. ◽  
Monika Gupta ◽  
Nikhilesh Prasannakumar ◽  
Ashank Rudola ◽  
...  

Author(s):  
Vijay R Sonawane ◽  
D.R. Rao

<span>The efficient management of the dynamic XML documents is a complex area of research. The changes and size of the XML documents throughout its lifetime are limitless. Change detection is an important part of version management to identify difference between successive versions of a document. Document content is continuously evolving. Users wanted to be able to query previous versions, query changes in documents, as well as to retrieve a particular document version efficiently. In this paper we provide comprehensive comparative analysis of various control schemes for change detection and querying dynamic XML documents.</span>


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Youjian Zhang ◽  
Wenjun Yan ◽  
Qiang Yang

This paper addresses the synchronization problem for a class of complex networks with time-varying topology as well as nonidentical nodes and coupling time-delay and presents two efficient control schemes to synchronize the network onto any given smooth goal dynamics. The time-varying network is supposed to be bounded within a certain range, which cannot be controlled. Through the adoption of hybrid control with linear static feedback control and adaptive feedback control, two control schemes are derived to guarantee such complex networks to reach the global synchronization. Finally, a set of numerical simulation experiments are carried out and the results demonstrate the effectiveness of the suggested control solutions.


2009 ◽  
Vol 56 (9) ◽  
pp. 3487-3495 ◽  
Author(s):  
M. Castilla ◽  
L.G. de Vicuna ◽  
J. Matas ◽  
J. Miret ◽  
J.C. Vasquez

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