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RBF network-based adaptive sliding mode control strategy for the tendon-sheath driven joint of a prosthetic hand.
Technol Health Care
September 2022
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, China.
Background: The complex in-hand manipulation puts forward higher requirements for the dexterity and joint control accuracy of the prosthetic hand. The tendon-sheath drive has important application potential in the fields of prosthetic hand to obtain higher dexterity. However, the existing control methods of tendon-sheath driven joint are mainly open-loop compensation based on friction model, which makes it difficult to achieve high-precision joint control.
View Article and Find Full Text PDFAlternative technique for photographing the corneal endothelium with a conventional photo slitlamp.
Am J Optom Physiol Opt
March 1987
Photographs of the corneal endothelium are taken usually with special purpose cameras or by using the Holden-Zantos technique with a conventional photo slitlamp. The latter method requires the camera back to be mounted on the photo slitlamp eyepiece and the resulting slide to be magnified by being rephotographed with a slide copier. This report describes another way of obtaining the requisite magnification using a teleconverter placed before the camera back mounted in its usual position and special darkroom techniques exploiting the properties of Kodak Technical Pan, a fine grain, variable contrast film.
View Article and Find Full Text PDFThe Quantiflex air/oxygen mixer is designed to dispense mixtures of air and oxygen with separate controls for total gas flow rate and oxygen concentration of the mixture within the range 21-100%. A monitoring flowmeter is provided for the mixture and also, as a safety measure, for the oxygen component. This serves as an indicator that oxygen is flowing and also permits independent calculation of the oxygen concentration of the mixture.
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