Measurement and emulation of time varying packet delay with applications to networked haptic virtual environments
نویسندگان
چکیده
Networked haptic virtual environments (NHVEs) are increasingly being used in medical simulation, aircraft maintenance training, and other similar fields. In this paper we present the implementation of a network emulator that can create realistic Internet-like characteristics in a laboratory setting for networked haptics. We compare the quality of this delay emulator to actual measurements taken on the Internet by reflecting UDP data packets and analyzing their round-trip delay distribution and packet loss.
منابع مشابه
Measurement and Simulation of Time Varying Packet Delay with Applications to Networked Haptic Virtual Environments
Networked haptic virtual environments were increasingly being used in medical simulation, aircraft maintenance training etc. The authors previously proposed virtual coupling schemes for NHVE’s and tested it for constant delay simulated by buffers. They are currently working on a time varying delay simulation of the virtual coupling schemes. Here the authors present the implementation of network...
متن کاملComparison of performance of virtual coupling schemes for haptic collaboration using real and emulated internet connections
Networked haptic virtual environments (NHVEs) are those in which multiple users collaborate and experience force feedback at the same time. The robustness of such systems needs to be tested under various network conditions that closely mirror the Internet. Previously, we had proposed three virtual coupling schemes to maintain position coherency in a NHVE, which were tested using constant and th...
متن کاملData Transmission for Haptic Collaboration in Virtual Environments
In this paper, we mainly present the analysis on the haptic data transmission over real network conditions in a networked haptic collaboration environment. Since haptic data are produced at the rate of 1khz, the transmission of haptic data is extremely sensitive to packet loss, and time variation. We took some experiments for transferring haptic data under various network conditions such as pac...
متن کاملModelling and Compensation of uncertain time-delays in networked control systems with plant uncertainty using an Improved RMPC Method
Control systems with digital communication between sensors, controllers and actuators are called as Networked Control Systems (NCSs). In general, NCSs encounter with some problems such as packet dropouts and network induced delays. When plant uncertainty is added to the aforementioned problems, the design of the robust controller that is able to guarantee the stability, becomes more complex. In...
متن کاملTime Delay and Data Dropout Compensation in Networked Control Systems Using Extended Kalman Filter
In networked control systems, time delay and data dropout can degrade the performance of the control system and even destabilize the system. In the present paper, the Extended Kalman filter is employed to compensate the effects of time delay and data dropout in feedforward and feedback paths of networked control systems. In the proposed method, the extended Kalman filter is used as an observer ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007