Effects of Visual Interface Design, and Control Mode and Latency on Performance, Telepresence and Workload in a Teleoperation Task

2000 ◽  
Vol 44 (5) ◽  
pp. 503-506 ◽  
Author(s):  
David B. Kaber ◽  
Jennifer M. Riley ◽  
Rong Zhou ◽  
John Draper
Keyword(s):  
Interface Design ◽  
Control Mode ◽  
And Control ◽  
Visual Interface

DECAFF: Experimental Study on Human Haptic Perception

2000 ◽  
Author(s):  
Scott L. Springer ◽  
Nicola J. Ferrier
Keyword(s):  
Interface Design ◽  
Haptic Perception ◽  
Human Perception ◽  
Initial Contact ◽  
Haptic Interfaces ◽  
Feed Forward ◽  
Feed Forward Control ◽  
Contact Distance ◽  
Traditional Approaches ◽  
And Control

Abstract DECAFF is a method for design and control of haptic interfaces that utilizes a DE-Coupled Actuator and Feed-Forward control. In this paper results of an experimental investigation are presented that quantify improved human haptic perception while using the DECAFF system, compared to the traditional haptic interface design and control systems. Perception improvements include the increased stability for rigid surfaces and increased ability of subjects to accurately identify initial contact with virtual surface boundaries. Traditional haptic interfaces employ an actuator directly coupled to the human operator that provides a force proportional to wall penetration distance and velocity. The DECAFF paradigm for design and control of haptic displays utilizes a de-coupled actuator and pre-contact distance sensing as a feed forward control term to improve stability and response performance. A human perception experiment has been performed that compares the touch sensation of the subjects for both the DECAFF system and traditional approaches to haptic display. In the human factors study the quality of rigid body display is evaluated in addition to the sensitivity of touch experienced by the subjects while making initial contact with virtual surfaces.

scholarly journals Power Sharing and Control Strategy for Provisionally Coupled Microgrid Clusters through an Isolated Power Exchange Network

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7514
Author(s):  
S.M. Ferdous ◽  
Farhad Shahnia ◽  
GM Shafiullah
Keyword(s):  
Power Sharing ◽  
Frequency Deviation ◽  
Load Shedding ◽  
Control Mode ◽  
Control Technique ◽  
Communication Link ◽  
Control Mechanisms ◽  
Power Exchange ◽  
Exchange Network ◽  
And Control

The two common mechanisms of load-shedding and renewable curtailment can prevent provisional overloading and excessive generation and the subsequent unacceptable voltage and frequency deviation in standalone microgrids (MGs), which makes MGs less resilient and reliable. However, instead of enabling load-shedding or renewable curtailment, such overloading or over-generation problems can be alleviated more efficiently and cost-effectively by provisionally interconnecting the neighboring MGs to exchange power amongst themselves. In such a scheme, the interconnected MGs can supply their local demand, as well as a portion of the demand of the adjacent MGs. In order to implement this strategy, a three-phase ac link can be used as the power exchange network, while each MG is coupled to the link through a back-to-back power electronics converter, in order to maintain the autonomy of each MG if they are eachoperated under different standards. This paper proposes a suitable decentralized power management strategy without a communication link between the MGs to achieve power-sharing amongst them and alleviate unacceptable voltage and frequency deviation along with the required control technique for the power electronic converters, which can be implemented at the primary level based on the measurement of the local parameters only. To this end, one of the converters should always regulate the dc link voltage while the other converter should operate in droop control mode when the MG is healthy and in constant PQ mode when overloaded or over-generating. Suitable status detection and mode transition algorithms and controllers were also developed and are proposed in this paper. The performance of the proposed power exchange and control mechanisms were evaluated and verified via PSIM®-based numerical simulation studies. The stability and sensitivity of the proposed power exchange topology are also analyzed against several critical design and operational parameters.

Study on Management and Organization Innovation of Low-Carbon Scenic Spots

2012 ◽  
Vol 573-574 ◽  
pp. 797-800
Author(s):  
Miao Wang ◽  
Jing Fei Ren ◽  
Jing Li
Keyword(s):  
Information Technology ◽  
Sustainable Development ◽  
Economic Development ◽  
Environmental Protection ◽  
Control Mode ◽  
Matrix Structure ◽  
Low Carbon ◽  
Management Information ◽  
Current Management ◽  
And Control

There are many problems about the current management mode of the scenic spots in China with the contradiction between the economic development and environmental protection as the key problem. The study on the management and control mode of the low-carbon scenic spots can alleviate the overload operation in the scenic spots to a great extent and it can help increase the economic income as well as achieve a sustainable development of the scenic spots. The straight-matrix structure constructs a horizontal and vertical management coordination platform with the information technology as the support and it enables the management information to be processed and conveyed within the organization so as to realize a win-win development of economy and environmental protection in the scenic spots.

Research on a Novel Two-Phase Hybrid Stepping Motor

2011 ◽  
Vol 121-126 ◽  
pp. 4122-4126
Author(s):  
Yong Kui Man ◽  
Yu Yan Ma ◽  
Yu Shuang Zhao ◽  
Chang Cheng Xu ◽  
Wen Sheng Hao
Keyword(s):  
Fast Response ◽  
Control Mode ◽  
Stepping Motor ◽  
Two Phase ◽  
Motor Torque ◽  
Response Characteristics ◽  
Torque Vector ◽  
Hybrid Stepping Motor ◽  
Motor Operation ◽  
And Control

In this paper, the mechanical structure of a novel two-phase hybrid stepping motor, which offers big transmission ratio and fast response characteristics, is proposed. Comparing with typical two-phase hybrid stepping motor, permanent magnet of the new model is placed on the stator, thus it has better utilization of space than conventional two-phase hybrid stepping motor. Furthermore, new two-phase hybrid stepping motor torque mathematical model is established. And the two-phase hybrid stepping motor torque vector analysis method we provide here provide you with an intuitive way of research on the new type two-phase hybrid stepping motor operation principle and control mode.

Greenhouse Monitoring and Control System Based on Zigbee

2013 ◽  
Vol 347-350 ◽  
pp. 768-771 ◽  
Author(s):  
Jian Jun Zhou ◽  
Xiao Fang Wang ◽  
Xiu Wang ◽  
Wei Zou ◽  
Ji Chen Cai
Keyword(s):  
Control System ◽  
Remote Monitoring ◽  
Control Method ◽  
Control Mode ◽  
Monitoring And Control ◽  
Control Software ◽  
Monitoring And Control System ◽  
Centralized Management ◽  
Remote Monitoring And Control ◽  
And Control

A greenhouse monitoring and control system based on Zigbee networks was developed. This system consists of greenhouse data acquisition controller and greenhouse remote monitoring and control software. The system could monitor temperature and humidity, soil water content and concentration of carbon dioxide in greenhouse and could save these greenhouse data to database. Greenhouse acquisition controller had two kinds of control modes, including local manual control mode and remote wireless control mode in monitoring center. Greenhouse remote monitoring and control software can collect, display and record the collected data, also can control greenhouse environment. According to the current indoor temperature, the target temperature and the offset temperature, PID control method is used for temperature control in greenhouse. The system is implemented using low power wireless components, and easy to be installed. A good wireless solution is provided by this system for centralized management of the greenhouse group.

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