Implementation and evaluation of a bilateral teleoperation with use of wave variables in the ReMeDi system for remote medical examination

Author(s):  
Adam Kurnicki ◽  
Mateusz Cholewinski ◽  
Bartlomiej Stanczyk ◽  
Krzysztof Arent
Author(s):  
Ho Ching ◽  
Wayne J. Book

In a conventional bilateral teleoperation, transmission delay over the Internet can potentially cause instability. The wave variables algorithm can solve this problem at the cost of poor transient response. The wave variables algorithm with adaptive predictor and drift control based on our previous work [24] has been proposed to provide stability under time delay with improved performance. The effectiveness of this algorithm is fully evaluated using human subjects with no previous experience in haptics. Three algorithms are tested using Phantom haptic devices as master and slave: conventional bilateral teleoperation with no transmission delay as control, wave variables with 200-300 ms transmission delay one way, and wave variables with adaptive predictor and direct drift control (WAPD) also with 200-300 ms delay one way. For each algorithm the human subjects are asked to perform three simple tasks: free space trajectory tracking, surface contour identification, and maze navigation. The results show WAPD to be superior to regular wave variables algorithm with higher subject ratings.


Author(s):  
Massimo Satler ◽  
Carlo Alberto Avizzano ◽  
Antonio Frisoli ◽  
Paolo Tripicchio ◽  
Massimo Bergamasco

2003 ◽  
Vol 125 (2) ◽  
pp. 205-214 ◽  
Author(s):  
Saghir Munir ◽  
Wayne J. Book

This article focuses on Internet-based real time control, such as remote bilateral teleoperation. In such applications, it is required that the control loop be closed through a time delayed network. This paper focuses on two control strategies (based on wave variables and a time forward observer), bandwidth issues, and some related programming details. Experimental results of bilateral teleoperation via the Internet between Atlanta and Tokyo are given. The system used is a two-degree-of-freedom haptic interface, bilaterally coupled to a simulation (implemented on a windows NT based computer) of a similar system.


2008 ◽  
Vol 16 (3) ◽  
pp. 548-555 ◽  
Author(s):  
A. Aziminejad ◽  
M. Tavakoli ◽  
R.V. Patel ◽  
M. Moallem

2017 ◽  
Vol 17 ◽  
pp. 446-456
Author(s):  
V. V. Yusupov

The issue of development of forensic institutions of Ukraine in the ХХ century was studied. Until 1917, forensic medical examinations were conducted in the medical compartments of the provincial administrations, at the departments of forensic medicine of universities and in hospitals - by police doctors. The chairs of forensic medicine existed in the St. Vladimir Kyiv University, Kharkiv, Novorosiisk and Lviv Universities. Real organization of Ukrainian forensic medical institutions began in 1919 with the creation of the Medical Examination Department at the People’s Commissariat of Health. In 1923, the Main forensic medical inspection, headed by M. S. Bokarius, was founded. In the provinces the positions of forensic medical inspectors were created. In 1927 the sections of biological research were established in the Kharkiv, Kyiv and Odesa institutes of scientific andforensic expertise,where separate forensic examinations were conducted. In 1949 the institutions of forensic medical examination of the USSR were merged into the Bureau of Forensic Medical Examination, in Ukraine it was held in 1951. It was proved that forensic medical institutions developed at the following chronological stages: 1) until 1917 - forensic medical service in the Ministry of Internal Affairs; 2) 1917-1941 - prewar formation of forensic medical institutions; 3) 1941-1949 -forensic medical institutions during the war and in the first post-war years; 4) 1949-1990s - period of development of the bureau of forensic medical examinations of the countries of the USSR; 5) since the 1990s - development of expert institutions in the public health care system in independent postSoviet states. It’s stressed that formation of the forensic institutions in Ukraine is closely related with the development of forensic medicine departments of higher educational establishments. Forensic medicine departments were the basisfor practicalforensic medicine, professors provided daily assistance to forensic medical experts.


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