2,179 resources related to Displacement control
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2012 10th World Congress on Intelligent Control and Automation (WCICA 2012)
A. Intelligent Control B. Control Theory and Control Engineering C. Complex Systems and Intelligent Robots D. Others
Bring together researchers active in the field of advanced motion control to discuss current development and future perspectives in motion control technology.
Chinese Control and Decision Conference is an annual international conference to create a forum for scientists, engineers and practitioners throughout the world to present the latest advancement in Control, Decision, Automation, Robotics and Emerging Technologies.
2012 IEEE International Conference on Automation and Logistics (ICAL)
Automation, logistics, and related areas.
Asian Control Conference is a major international conference sponsored by Asian Control Association. ASCC 2011 will be an excellent opportunity for automatic control researchers and engineers from academia and industries to exchange their research results and new findings.
Theory and applications of industrial electronics and control instrumentation science and engineering, including microprocessor control systems, high-power controls, process control, programmable controllers, numerical and program control systems, flow meters, and identification systems.
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control was the number-three journal in acoustics in 2002, according to the annual Journal Citation Report (2002 edition) published by the Institute for Scientific Information. This publication focuses on the theory, design, and application on generation, transmission, and detection of bulk and surface mechanical waves; fundamental studies in physical acoustics; design of sonic ...
A. Chatterjee; R. Chatterjee; F. Matsuno; T. Endo INDIN '05. 2005 3rd IEEE International Conference on Industrial Informatics, 2005., 2005
The present paper proposes the design of a stable state-feedback fuzzy controller for a flexible robotic arm. The fuzzy controller is designed employing parallel distributed compensation philosophy where one local control rule is designed for each local fuzzy plant rule. A neuro-fuzzy architecture is employed to derive the approximate state-space model for the flexible robotic arm on the basis of ...
S. Rees IEEE Transactions on Industrial Electronics, 2005
A control method for current-source rectifiers (CSRs), which realizes substantially sinusoidal line currents, unity displacement power factor, and a dc-link current control with excellent dynamic properties is presented. CSRs are usually operated by pulsewidth-modulation (PWM) or space-vector-modulation techniques. However, due to the mains LC filter resonant circuits when using these modulation methods the system stability has to be investigated, resulting ...
F. B. Libano; J. A. Cobos; J. Uceda Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE, 1997
Nowadays, hybrid filtering is an important alternative to improve line performance when supplying high-power nonlinear loads. This paper presents a simple and low cost control strategy for hybrid filter as an alternative to other more complex algorithms, in some specific applications. The proposed control strategy is recommended for a utility interface with three-phase diode bridge rectifier front-end due to its ...
Y. Yamamoto; Xiaoping Yun IEEE Transactions on Automatic Control, 1994
A mobile manipulator in this study is a manipulator mounted on a mobile platform. Assuming the end point of the manipulator is guided, e.g., by a human operator to follow an arbitrary trajectory, it is desirable that the mobile platform is able to move as to position the manipulator in certain preferred configurations. Since the motion of the manipulator is ...
C. R. Burrows; M. N. Sahinkaya American Control Conference, 1984, 1984
The constraints on eigenvalue assignment imposed by various suggested schemes for controlling rotor vibrations are examined. The work is extended to consider oil-whirl instability which is met in many practical situations. A method is presented for avoiding this phenomenon for the case of a rigid rotor supported on oil-film journal bearings.
Electron Devices, IEEE Transactions on, 2001
A simple expression for the number of bits that can be programmed per unit time (bandwidth or BW) in flash memories with the ramped gate programming (RGP) technique is used to optimize memory BW and derive design curves. Preliminary experimental results obtained with common-ground NOR flash memory arrays realized with 0.25 μm technology show that memory BW can: (1) exceed ...
Decision and Control, 1995., Proceedings of the 34th IEEE Conference on, 1995
In comparison with robot manipulators, it is acknowledged that primate limbs excel robots in movements requiring compliance control. After certain salient properties of the neuromuscular system have been identified in our earlier works, a neuromuscular-like controller was proposed. This paper extend our findings in modeling the biological muscle-reflex mechanism to actual applications. Experiments on a PUMA 560 robot demonstrated that ...
Magnetics Conference, 2006. INTERMAG 2006. IEEE International, 2006
Switched reluctance motor (SRM) has simple structure with a winding only on the stator and not on the rotor. The costs are lower than other motors due to its simple construction. It is easy to implement a high speed drive system and both the torque and efficiency of the unit volume are highly superior to all others. The simplest excitation ...
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE, 1991
Conventional slip-recovery drives are plagued with a low overall power factor, due to the naturally commutated power convertor in the rotor circuit. One solution consists of adding two GTOs to the converter bridge, in order to transform it into a fully controllable inverter, which allows for independent control over voltage and displacement factor. When appropriately controlled, this converter is capable ...
Microelectromechanical Systems, Journal of, 2007
A novel electrolysis-bubble-actuated micropump based on the roughness gradient design in the microchannel is reported in this paper. This micropump is implemented by taking advantage of both the electrolysis actuation and the surface tension effect. The surface tension effect is controlled via the periodic generation of electrolytic bubbles and the roughness gradient design of microchannel surface, which results in the ...
The visual field of each eye is split in half. Approximately half of the axons from each eye cross over so that the left hemisphere of the brain processes the right half of the visual fields while the right hemisphere processes the left half. The optic nerves lead to the lateral geniculate nuclei and then proceed to the primary visual (striate) cortex. Here, according to the research of Hubel and Wiesel, groups of neurons are organized into short lines that fire when an edge, corresponding to that particular orientation, enters the visual field. Half of the neurons process signals that originated in the left eye (L layers) and the other half process signals from the right eye (R layers); the Land R layers are interleaved. The visual image is thus dissected into many short edges, the first step in the hierarchical buildup of more complex geometrical shapes. All possible edge orientations are detected by a layer of simple (S) cells; these feed a layer of complex (C) cells which bestow invariance with respect to lateral displacement. A one-dimensional model is presented in which a to-element visual signal is analyzed by an S1C1 pair of layers feeding an S2C2 pair. The model looks at (1) a white strip gradually lowered over a black background; (2) a white bar moving downward; and (3) a white bar that expands until it covers the entire black background. Some rules for designing one-dimensional pattern-recognition models are derived. Self-organization of the cortex is considered. A scheme is presented by which one cell in a group of cells captures the input for itself and suppresses all of the other neurons. A somewhat more complicated neural network is examined as it goes through learning, organizing, and testing phases. Because the same techniques are common to real and artificial neural net works (ANNs), a section is devoted to ANNs. Associative memory, the task-assignment problem, and back propagation are considered. Various ?>household chores?> associated with vision are also discussed as follows: the constant jerky movements of the eye (saccadic motion) and compensation for it; control of the lens opening (pupillary reflex); distance accommodation; and binocular convergence.
In this paper we propose a mechanism for motivational competition and selection of behavior. One important characteristic of this mechanism is that the selection of behavior is modelled as an emergent property of a parallel process. This in contrast with mechanisms for behavior selection and motivational competition proposed earlier, which are based on a hierarchical. preprogrammed control structure. We show that selection of behavior can be modeled in a bottom-up way using an activation/inhibition dynamics among the different behaviors that can be selected. There is no weighing up of behaviors in a cognitive manner and neither are hierarchical or bureaucratic structures imposed. The paper elaborates upon the results we obtained with simulated creatures based on this mechanism. It draws parallels between characteristics observed in animal behavior and characteristics demonstrated by our artificial creatures. Examples are: displacement behavior, opportunistic behavior, fatigue, selective attention, and so on.
This chapter contains sections titled: Introduction Review of Multiobjective Optimization Techniques Formulated MO Optimization Model Proposed Interactive Displaced Worst Compromise Programming Method Proposed Interactive Procedure with WC Displacement Implementation Numerical Results Conclusions References
Natural and experimental deformation of fault rocks show that fluid flow and mineral reactions are linked to fracturing in a nonlinear feedback relationship that potentially affects the displacement and stress histories of large faults. These interactions spawn instabilities that are expressed as episodic seismic events involving cataclasis, which alternate with slow, aseismic deformation involving pressure-solution creep, as well as healing and sealing by fluid-assisted mass transfer. This chapter focuses on the timescale of these processes during the earthquake cycle, with special emphasis on the evolution of rheological and transport properties of fault rock during the interseismic period. Fracturing weakens faults dramatically by enhancing the kinetics of pressure-solution creep and of mineral reactions. Therefore, during the postseismic period and initial part of the interseismic period, weakening is faster than fault strengthening by healing and sealing of fractures. During the interseismic period, mass transfer associated with fluid-assisted chemical reactions smoothes asperities on fault surfaces, heals fractures and enhances the formation of a foliation parallel to the fault plane, and decreases permeability. If advective fluid inflow is significant, this can increase pore-fluid pressure and reduce effective shear strength, at least locally within the fault. In the long term, however, the combined effect of fracturing, pressure-solution creep, and sealing is to restore the rheological and transport properties of the fault during the interseismic period, setting the stage for renewed stress build-up and seismicity. We demonstrate the salient characteristics of fluid-assisted fault weakening and strengthening with a one-dimensional model of an idealized fault zone undergoing simple shear at constant velocity. The model shows that the kinetics of the weakening a nd strengthening processes determine the relative rates of shear stress decrease and increase during the interseismic period. The kinetics of dissolution precipitation and mineral reactions are therefore expected to exert an important control on the recurrence time of earthquakes.
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