The Experts below are selected from a list of 241476 Experts worldwide ranked by ideXlab platform
Volkan Patoglu - One of the best experts on this subject based on the ideXlab platform.
-
sEMG-Based Natural Control Interface for a Variable Stiffness Transradial Hand Prosthesis.
arXiv: Signal Processing, 2019Co-Authors: Elif Hocaoglu, Volkan PatogluAbstract:We propose, implement and evaluate a natural human-machine Control Interface for a variable stiffness transradial hand prosthesis that achieves tele-impedance Control through surface electromyography (sEMG) signals. This Interface, together with variable stiffness actuation (VSA), enables an amputee to modulate the impedance of the prosthetic limb to properly match the requirements of a task, while performing activities of daily living. Both the desired position and stiffness references are estimated through sEMG signals and used to Control the VSA hand prosthesis. In particular, regulation of hand impedance is managed through the impedance measurements of the intact upper arm; this Control takes place naturally and automatically as the amputee interacts with the environment, while position of the hand prosthesis is regulated intentionally by the amputee through the estimated position of the shoulder. The proposed approach is advantageous, since the impedance regulation takes place naturally without requiring amputees' attention and diminishing their functional capability. Consequently, the proposed Interface is easy to use, does not require long training periods or interferes with the Control of intact body segments. The performance of the approach is evaluated through human subject experiments where adequate estimation of references and independent Control of position and stiffness are demonstrated.
Elif Hocaoglu - One of the best experts on this subject based on the ideXlab platform.
-
sEMG-Based Natural Control Interface for a Variable Stiffness Transradial Hand Prosthesis.
arXiv: Signal Processing, 2019Co-Authors: Elif Hocaoglu, Volkan PatogluAbstract:We propose, implement and evaluate a natural human-machine Control Interface for a variable stiffness transradial hand prosthesis that achieves tele-impedance Control through surface electromyography (sEMG) signals. This Interface, together with variable stiffness actuation (VSA), enables an amputee to modulate the impedance of the prosthetic limb to properly match the requirements of a task, while performing activities of daily living. Both the desired position and stiffness references are estimated through sEMG signals and used to Control the VSA hand prosthesis. In particular, regulation of hand impedance is managed through the impedance measurements of the intact upper arm; this Control takes place naturally and automatically as the amputee interacts with the environment, while position of the hand prosthesis is regulated intentionally by the amputee through the estimated position of the shoulder. The proposed approach is advantageous, since the impedance regulation takes place naturally without requiring amputees' attention and diminishing their functional capability. Consequently, the proposed Interface is easy to use, does not require long training periods or interferes with the Control of intact body segments. The performance of the approach is evaluated through human subject experiments where adequate estimation of references and independent Control of position and stiffness are demonstrated.
Wenjuan Zhang - One of the best experts on this subject based on the ideXlab platform.
-
Utility of Functional Transparency and Usability in UAV Supervisory Control Interface Design
International Journal of Social Robotics, 2021Co-Authors: Wenjuan Zhang, David Feltner, David Kaber, James ShirleyAbstract:A basic notion of transparency in automated systems design is the need to support user tracking and understanding of system states. Many usability principles for complex systems design implicitly target the concept of transparency. In this study, we made comparison of a “baseline” Control Interface mimicking an existing available UAV ground Control station with an “enhanced” Interface designed with improved functional transparency and usability, and a “degraded” Interface which removed important design features. Each participant was extensively trained in the use of one of the Interfaces and all simulated UAV Control tasks. Each participant was tested in four trials of a typical military concept of UAV operation with different mission maps and vehicle speeds. Results revealed participants using the enhanced Interface to produce significantly faster task completion times and greater accuracy across all UAV Control tasks. The enhanced features were also found to promote operator understanding of the system and mitigate workload. By defining and setting automation transparency as an overarching design objective and identifying specific transparency and usability issues within existing GCS designs, we weress able to design and prototype an enhanced Interface that more effectively supported human-automation interaction. Automation transparency as a high-level design objective may be useful for expert designers; whereas, usability design guidelines, as “building blocks” to transparency, may be a useful tool for new system designers.
-
Enhancement and Application of a UAV Control Interface Evaluation Technique: Modified GEDIS-UAV
ACM Transactions on Human-Robot Interaction, 2020Co-Authors: Wenjuan Zhang, David Feltner, James Shirley, David B. Kaber, Manida Swangnetr NeubertAbstract:UAV supervisory Control Interfaces are important for safe operations and mission performance. We reviewed existing UAV Interface design and evaluation tools and identified limitations. To address issues with existing methods, we developed an enhanced evaluation tool, the M-GEDIS-UAV. The tool includes detailed criteria for all aspects of UAV Control Interface design to support operator performance. It also supports quantitative and objective assessment of an Interface. We prototyped three UAV information displays, including a digital Control display, analog Control display, and “massive” data display, as part of a simulated supervisory Control Interface. Six analysts, including three human factors experts and three novices evaluated the Interfaces using the M-GEDIS-UAV. Inter-rater reliability was high for the human factors experts, suggesting training in usability analysis is necessary for tool application. Results also revealed the massive data display to produce significantly lower evaluation scores than the other displays. We concluded that the M-GEDIS-UAV was sensitive to Interface manipulations and was most effectively used by human factors experts. Using the M-GEDIS-UAV tool can reveal the majority of design deviations from guidelines early in the design process toward increasing the effectiveness of Control Interfaces.
-
SMC - Unmanned aerial vehicle Control Interface design and cognitive workload: A constrained review and research framework
2016 IEEE International Conference on Systems Man and Cybernetics (SMC), 2016Co-Authors: Wenjuan Zhang, David Feltner, James Shirley, Manida Swangnetr, David B. KaberAbstract:Unprincipled design of unmanned aerial vehicle (UAV) Control Interfaces can increase operator cognitive workload and degrade performance. It is important to identify optimal Interface design features that can serve to prevent cognitive overload under demanding task scenarios and environmental conditions. The present research summarized literature on critical issues in supervisory Control Interface design, current UAV Interface design approaches and existing evaluation methods. A research framework was also proposed for a project to systematically and quantitatively relate UAV Control Interface features to cognitive workload outcomes. The framework also supports development an effective and efficient Interface evaluation tool to predict cognitive workload based on specific design features.
James Shirley - One of the best experts on this subject based on the ideXlab platform.
-
Utility of Functional Transparency and Usability in UAV Supervisory Control Interface Design
International Journal of Social Robotics, 2021Co-Authors: Wenjuan Zhang, David Feltner, David Kaber, James ShirleyAbstract:A basic notion of transparency in automated systems design is the need to support user tracking and understanding of system states. Many usability principles for complex systems design implicitly target the concept of transparency. In this study, we made comparison of a “baseline” Control Interface mimicking an existing available UAV ground Control station with an “enhanced” Interface designed with improved functional transparency and usability, and a “degraded” Interface which removed important design features. Each participant was extensively trained in the use of one of the Interfaces and all simulated UAV Control tasks. Each participant was tested in four trials of a typical military concept of UAV operation with different mission maps and vehicle speeds. Results revealed participants using the enhanced Interface to produce significantly faster task completion times and greater accuracy across all UAV Control tasks. The enhanced features were also found to promote operator understanding of the system and mitigate workload. By defining and setting automation transparency as an overarching design objective and identifying specific transparency and usability issues within existing GCS designs, we weress able to design and prototype an enhanced Interface that more effectively supported human-automation interaction. Automation transparency as a high-level design objective may be useful for expert designers; whereas, usability design guidelines, as “building blocks” to transparency, may be a useful tool for new system designers.
-
Enhancement and Application of a UAV Control Interface Evaluation Technique: Modified GEDIS-UAV
ACM Transactions on Human-Robot Interaction, 2020Co-Authors: Wenjuan Zhang, David Feltner, James Shirley, David B. Kaber, Manida Swangnetr NeubertAbstract:UAV supervisory Control Interfaces are important for safe operations and mission performance. We reviewed existing UAV Interface design and evaluation tools and identified limitations. To address issues with existing methods, we developed an enhanced evaluation tool, the M-GEDIS-UAV. The tool includes detailed criteria for all aspects of UAV Control Interface design to support operator performance. It also supports quantitative and objective assessment of an Interface. We prototyped three UAV information displays, including a digital Control display, analog Control display, and “massive” data display, as part of a simulated supervisory Control Interface. Six analysts, including three human factors experts and three novices evaluated the Interfaces using the M-GEDIS-UAV. Inter-rater reliability was high for the human factors experts, suggesting training in usability analysis is necessary for tool application. Results also revealed the massive data display to produce significantly lower evaluation scores than the other displays. We concluded that the M-GEDIS-UAV was sensitive to Interface manipulations and was most effectively used by human factors experts. Using the M-GEDIS-UAV tool can reveal the majority of design deviations from guidelines early in the design process toward increasing the effectiveness of Control Interfaces.
-
SMC - Unmanned aerial vehicle Control Interface design and cognitive workload: A constrained review and research framework
2016 IEEE International Conference on Systems Man and Cybernetics (SMC), 2016Co-Authors: Wenjuan Zhang, David Feltner, James Shirley, Manida Swangnetr, David B. KaberAbstract:Unprincipled design of unmanned aerial vehicle (UAV) Control Interfaces can increase operator cognitive workload and degrade performance. It is important to identify optimal Interface design features that can serve to prevent cognitive overload under demanding task scenarios and environmental conditions. The present research summarized literature on critical issues in supervisory Control Interface design, current UAV Interface design approaches and existing evaluation methods. A research framework was also proposed for a project to systematically and quantitatively relate UAV Control Interface features to cognitive workload outcomes. The framework also supports development an effective and efficient Interface evaluation tool to predict cognitive workload based on specific design features.
Donald E Walter - One of the best experts on this subject based on the ideXlab platform.
-
an inexpensive 1 millisecond experiment Control Interface for ibm pcs and its user friendly Control language
Behavior Research Methods Instruments & Computers, 1995Co-Authors: William L Palya, Donald E WalterAbstract:An inexpensive, professionally manufactured, digital I/O experiment Control Interface for any PC-compatible computer is described. It plugs into a standard printer port and provides 1-msec accuracy for up to 4 inputs and 22 outputs. It also allows experiment Control procedures to be written in an easy-to-learn, easy-to-use Experiment Control language (ECBASIC). In addition to many instructions specifically designed to simplify behavioral research, ECBASIC provides for transparent collection and storage of event logs.
-
An inexpensive 1-millisecond experiment Control Interface for IBM PCs and its user-friendly Control language
Behavior Research Methods Instruments & Computers, 1995Co-Authors: William L Palya, Donald E Walter, Josey Y. M. ChuAbstract:An inexpensive, professionally manufactured, digital I/O experiment Control Interface for any PC-compatible computer is described. It plugs into a standard printer port and provides 1-msec accuracy for up to 4 inputs and 22 outputs. It also allows experiment Control procedures to be written in an easy-to-learn, easy-to-use Experiment Control language (ECBASIC). In addition to many instructions specifically designed to simplify behavioral research, ECBASIC provides for transparent collection and storage of event logs.