1,722,640 research outputs found
Discussion on: '2-DOF controller design for precise positioning a spindle levitated with active magnetic bearings'
No full textJuan Shi, Peng Sh
From Foamed Concrete to Geopolymer Foamed Concrete: Design, Properties and Application
No full textL'abstract è presente nell'allegato / the abstract is in the attachmen
Robust and non-fragile finite-time H-infinity control for uncertain Markovian jump nonlinear systems
No full textAbstract not availableYingqi Zhang, Yan Shi, Peng Sh
A Systematic Robust Control Method for Marine Surface Vehicles
No full textThis paper provides a systematic method to easily design robust, smooth and effective control laws of PD, PID and (PD2)-type for a marine surface vehicle (MSV). The proposed control laws allow one to force, with ideal or real actuators, a MSV with uncertain parameters and subject to disturbances to follow any navigation trajectory, having a bounded second or third derivative, with a tracking error norm as small as desired, a good transient phase, and feasible control signals. Some practical guidelines to easily design the proposed controllers are given. Finally, the provided control approach is illustrated and validated in cases of berthing a MSV in a busy port, accurately and in a minimum time, and maintaining a MSV in a predetermined position without using anchoring systems, also in presence of measurement noises
Majorant-Based Control Methodology for Mechatronic and Transportation Processes
Full text linkThis paper provides a unified approach via majorant systems, which allows one to easily design a family of robust, smooth and effective control laws of proportional - h order integral - k order derivative (PIhDk) -type for broad classes of uncertain nonlinear multi-input multi-output (MIMO) systems, including mechatronic and transportation processes with ideal or real actuators, subject to bounded disturbances and measurement errors. The proposed control laws are simple to design and implement and are used, acting on a single design parameter, to track a sufficiently smooth but generic reference signal, yielding a tracking error norm less than a prescribed value, with a good transient phase and feasible control signals, despite the presence of disturbances, parametric and structural uncertainties, measurement errors, and in case of real actuators and amplifiers. Moreover, some guidelines to easily design the proposed controllers are given. Finally, the stated unified methodology and various performance comparisons are illustrated and validated in two case studies
Supplemental Material - LncRNA HOXC-AS3 overexpression inhibits TGF-β2-induced colorectal cancer cell migration and invasion by sponging miR-1269
No full textSupplemental Material for LncRNA HOXC-AS3 overexpression inhibits TGF-β2-induced colorectal cancer cell migration and invasion by sponging miR-1269 by Tong-tong Zhang, Hai-peng Chen, Su-yang Yu, and Shi-peng Zhao in Human & Experimental Toxicology</p
Analysis and synthesis for discrete-time switched systems: a quasi-time-dependent method
No full textThis book presents recent theoretical advances in the analysis and synthesis of discrete-time switched systems under the time-dependent switching scheme, including stability and disturbance attenuation performance analysis, control and ...Zhongyang Fei, Shuang Shi, Peng Sh
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Finite-time stability analysis and synthesis of complex dynamic systems
No full textFinite-time control has been one of the important research topics in control recently due to
its significance in theory and practice. To investigate finite-time control systems, one should
analyze the stability of the systems. Finite-time stable systems may enjoy not only faster
convergence but also better robustness and disturbance rejection properties. Moreover, the
finite-time control has been widely applied to the design and analysis of many practical
systems, such as those of unicycle mobile robots, permanent magnet synchronous machine
servo systems, and rigid spacecrafts. Hence, it is of importance to investigate various issues
related to finite-time control.
The main focus of this special issue will be on the new developments in theories of finite
time stability/control/filtering for complex dynamic systems with a high attention to their
application in practical oriented systems
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