The Experts below are selected from a list of 288 Experts worldwide ranked by ideXlab platform

Dimos V Dimarogonas - One of the best experts on this subject based on the ideXlab platform.

  • Distributed Event-Triggered Communication and Control of Linear Multiagent Systems Under Tactile Communication
    IEEE Transactions on Automatic Control, 2018
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This note is concerned with the consensus of linear multiagent systems under Tactile Communication. Motivated by the emerging Tactile Communication technology where extremely low latency has to be supported, a distributed event-triggered Communication and control scheme is proposed for the data reduction of each agent. First, an event-triggered data reduction scheme is designed for the Communication between neighbors. Under such a Communication scheme, a distributed event-triggered output feedback controller is further implemented for each agent, which is updated asynchronously with the Communication action. It is proven that the consensus of the underlying multiagent systems is achieved asymptotically. Furthermore, it is shown that the proposed Communication and control strategy fulfils the reduction of both the frequency of Communication and controller updates as well as excluding Zeno behavior. A numerical example is given to illustrate the effectiveness of the proposed control strategy.

  • event triggered output feedback control for linear systems under Tactile Communication
    Conference on Decision and Control, 2017
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This paper investigates an event-triggered output feedback control strategy of linear systems under Tactile Communication, for which two different frameworks are considered. Motivated by the emerging Tactile Communications technology where latencies are very small but at the price of limited message sizes, a perception-based deadband principle is proposed for the data reduction of Communication. In each framework, under an assumption that the deadband factor is upper bounded with respect to the system model, it is proven that global asymptotic stability of the closed loop system is achieved. Then, an event-triggered output feedback controller under Tactile Communication is further introduced. It is shown that the designed controller is capable of reducing the frequency of controller updates as well as excluding Zeno behavior. Numerical examples are given to illustrate the effectiveness of the proposed control algorithm.

  • CDC - Event-triggered output feedback control for linear systems under Tactile Communication
    2017 IEEE 56th Annual Conference on Decision and Control (CDC), 2017
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This paper investigates an event-triggered output feedback control strategy of linear systems under Tactile Communication, for which two different frameworks are considered. Motivated by the emerging Tactile Communications technology where latencies are very small but at the price of limited message sizes, a perception-based deadband principle is proposed for the data reduction of Communication. In each framework, under an assumption that the deadband factor is upper bounded with respect to the system model, it is proven that global asymptotic stability of the closed loop system is achieved. Then, an event-triggered output feedback controller under Tactile Communication is further introduced. It is shown that the designed controller is capable of reducing the frequency of controller updates as well as excluding Zeno behavior. Numerical examples are given to illustrate the effectiveness of the proposed control algorithm.

Carlo Fischione - One of the best experts on this subject based on the ideXlab platform.

  • Distributed Event-Triggered Communication and Control of Linear Multiagent Systems Under Tactile Communication
    IEEE Transactions on Automatic Control, 2018
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This note is concerned with the consensus of linear multiagent systems under Tactile Communication. Motivated by the emerging Tactile Communication technology where extremely low latency has to be supported, a distributed event-triggered Communication and control scheme is proposed for the data reduction of each agent. First, an event-triggered data reduction scheme is designed for the Communication between neighbors. Under such a Communication scheme, a distributed event-triggered output feedback controller is further implemented for each agent, which is updated asynchronously with the Communication action. It is proven that the consensus of the underlying multiagent systems is achieved asymptotically. Furthermore, it is shown that the proposed Communication and control strategy fulfils the reduction of both the frequency of Communication and controller updates as well as excluding Zeno behavior. A numerical example is given to illustrate the effectiveness of the proposed control strategy.

  • event triggered output feedback control for linear systems under Tactile Communication
    Conference on Decision and Control, 2017
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This paper investigates an event-triggered output feedback control strategy of linear systems under Tactile Communication, for which two different frameworks are considered. Motivated by the emerging Tactile Communications technology where latencies are very small but at the price of limited message sizes, a perception-based deadband principle is proposed for the data reduction of Communication. In each framework, under an assumption that the deadband factor is upper bounded with respect to the system model, it is proven that global asymptotic stability of the closed loop system is achieved. Then, an event-triggered output feedback controller under Tactile Communication is further introduced. It is shown that the designed controller is capable of reducing the frequency of controller updates as well as excluding Zeno behavior. Numerical examples are given to illustrate the effectiveness of the proposed control algorithm.

  • CDC - Event-triggered output feedback control for linear systems under Tactile Communication
    2017 IEEE 56th Annual Conference on Decision and Control (CDC), 2017
    Co-Authors: Carlo Fischione, Dimos V Dimarogonas
    Abstract:

    This paper investigates an event-triggered output feedback control strategy of linear systems under Tactile Communication, for which two different frameworks are considered. Motivated by the emerging Tactile Communications technology where latencies are very small but at the price of limited message sizes, a perception-based deadband principle is proposed for the data reduction of Communication. In each framework, under an assumption that the deadband factor is upper bounded with respect to the system model, it is proven that global asymptotic stability of the closed loop system is achieved. Then, an event-triggered output feedback controller under Tactile Communication is further introduced. It is shown that the designed controller is capable of reducing the frequency of controller updates as well as excluding Zeno behavior. Numerical examples are given to illustrate the effectiveness of the proposed control algorithm.

Gilbert R Gonzales - One of the best experts on this subject based on the ideXlab platform.

  • microelectrical mechanical systems actuator array for Tactile Communication
    International Conference on Computers Helping People with Special Needs, 2002
    Co-Authors: Eniko T Enikov, Kalin V Lazarov, Gilbert R Gonzales
    Abstract:

    Tactile perception of alpha-numerics is possible using a Tactile illusion (TI). The illusory sensation of motion is produced by mechanical actuators applying points of pressure on the skin. Vibrating points induce a nonveridical perception of motion from point to point. Intact lemniscal and parietal cortex are necessary for perception of the TI and can be used as a neurophysiological testing tool and an additional human-machine Communication channel. We describe a 4 × 5 actuator array of individual vibrating pixels for fingertip Tactile Communication. The array utilizes novel micro-clutch MEMS technology. Individual pixels are turned ON and OFF by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. Physiological parameters required for inducing TI and the fabrication sequence for the thermal micro-actuators along with actuation results are presented. Fingertip perception of micro-actuators could be built into a variety of data acquisition interfaces for handicapped persons.

  • ICCHP - Microelectrical Mechanical Systems Actuator Array for Tactile Communication
    Lecture Notes in Computer Science, 2002
    Co-Authors: Eniko T Enikov, Kalin V Lazarov, Gilbert R Gonzales
    Abstract:

    Tactile perception of alpha-numerics is possible using a Tactile illusion (TI). The illusory sensation of motion is produced by mechanical actuators applying points of pressure on the skin. Vibrating points induce a nonveridical perception of motion from point to point. Intact lemniscal and parietal cortex are necessary for perception of the TI and can be used as a neurophysiological testing tool and an additional human-machine Communication channel. We describe a 4 × 5 actuator array of individual vibrating pixels for fingertip Tactile Communication. The array utilizes novel micro-clutch MEMS technology. Individual pixels are turned ON and OFF by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. Physiological parameters required for inducing TI and the fabrication sequence for the thermal micro-actuators along with actuation results are presented. Fingertip perception of micro-actuators could be built into a variety of data acquisition interfaces for handicapped persons.

Lynette A Jones - One of the best experts on this subject based on the ideXlab platform.

  • Tactile Communication systems optimizing the display of information
    Progress in Brain Research, 2011
    Co-Authors: Lynette A Jones
    Abstract:

    Abstract Tactile Communication systems based on vibroTactile signals have been developed as sensory substitution devices for those with visual, auditory, or vestibular impairments and to assist users in spatial orientation and navigation in unfamiliar environments. One of the main challenges in using Tactile displays to compensate for sensory loss in other modalities or to overcome the limitations of visual and auditory information overload is in determining what type of information can be presented tactually and which parameters of stimulation can be used to convey these messages effectively. Psychophysical studies of vibroTactile perception provide a framework that assists in determining which stimulus dimensions and ranges of values can be used to create Tactile patterns, known as tactons. A number of experiments have been conducted in which the ability of participants to identify tactons presented at different sites on the body has been measured. The results from this research indicate that tactons created by varying the spatial location, number, and temporal sequence of activation of motors in a Tactile display can be accurately identified. They further demonstrate the potential of using two-dimensional Tactile displays to present information, and the feasibility of creating Tactile Communication systems that are easily learned.

  • VibroTactile pattern recognition on the arm and back.
    Perception, 2009
    Co-Authors: Lynette A Jones, Jacquelyn Kunkel, Erin Piateski
    Abstract:

    A series of experiments was conducted to evaluate the effectiveness with which a Tactile display mounted on either the forearm or the back can be used to communicate simple instructions and commands. In the first two sets of experiments, participants identified a vibroTactile pattern using a visual template that represented the pattern of activation. For the patterns displayed on the forearm, accuracy depended on the specific set of patterns presented and ranged from 30% to 96% correct for the individual patterns. In a second series of experiments, seven hand-and-arm signals that are used to communicate in military contexts were converted into Tactile representations that were displayed on the back. These were identified accurately (98% correct) and, when only the picture of the hand signal was available, participants achieved a recognition rate of 75% correct. A further study with these seven patterns indicated that participants were still able to identify the patterns accurately (92% correct) when they were engaged in a concurrent physical or cognitive task. The results indicate the importance of evaluating Tactile Communication in the context of the specific patterns or messages that will be conveyed, and that with the judicious selection of Tactile patterns both the arm and back provide a functional substrate for Tactile Communication.

Eniko T Enikov - One of the best experts on this subject based on the ideXlab platform.

  • microelectrical mechanical systems actuator array for Tactile Communication
    International Conference on Computers Helping People with Special Needs, 2002
    Co-Authors: Eniko T Enikov, Kalin V Lazarov, Gilbert R Gonzales
    Abstract:

    Tactile perception of alpha-numerics is possible using a Tactile illusion (TI). The illusory sensation of motion is produced by mechanical actuators applying points of pressure on the skin. Vibrating points induce a nonveridical perception of motion from point to point. Intact lemniscal and parietal cortex are necessary for perception of the TI and can be used as a neurophysiological testing tool and an additional human-machine Communication channel. We describe a 4 × 5 actuator array of individual vibrating pixels for fingertip Tactile Communication. The array utilizes novel micro-clutch MEMS technology. Individual pixels are turned ON and OFF by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. Physiological parameters required for inducing TI and the fabrication sequence for the thermal micro-actuators along with actuation results are presented. Fingertip perception of micro-actuators could be built into a variety of data acquisition interfaces for handicapped persons.

  • ICCHP - Microelectrical Mechanical Systems Actuator Array for Tactile Communication
    Lecture Notes in Computer Science, 2002
    Co-Authors: Eniko T Enikov, Kalin V Lazarov, Gilbert R Gonzales
    Abstract:

    Tactile perception of alpha-numerics is possible using a Tactile illusion (TI). The illusory sensation of motion is produced by mechanical actuators applying points of pressure on the skin. Vibrating points induce a nonveridical perception of motion from point to point. Intact lemniscal and parietal cortex are necessary for perception of the TI and can be used as a neurophysiological testing tool and an additional human-machine Communication channel. We describe a 4 × 5 actuator array of individual vibrating pixels for fingertip Tactile Communication. The array utilizes novel micro-clutch MEMS technology. Individual pixels are turned ON and OFF by pairs of microscopic thermal actuators, while the main vibration is generated by a vibrating piezo-electric plate. Physiological parameters required for inducing TI and the fabrication sequence for the thermal micro-actuators along with actuation results are presented. Fingertip perception of micro-actuators could be built into a variety of data acquisition interfaces for handicapped persons.