Browsing by Author "Schreve, K."
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- ItemOptical aid for placing composite material (prepregs) in a mould(Southern African Institute for Industrial Engineering, 2018-05-31) Van der Westhuizen, J.; Schreve, K.ENGLISH ABSTRACT: Increased industrial use of composite materials for manufacturing strong lightweight components stimulates endeavours for more efficient assembly methods. This study attempted to find an optimal method to provide optical aid for the placement of pre-impregnated reinforcing fabric (prepregs). A novel approach to optical assistance for the placement of prepregs was designed to be straightforward and affordable. The developed system meets industry standards for accuracy, and provides the solution at a cost many times less than existing solutions. The findings allow companies in the composite material industry to eliminate prepreg layup errors at an affordable price.
- ItemA user interface for a seven degree of freedom surgical robot(South African Institution of Mechanical Engineering, 2013) Heunis, J. S.; Scheffer, C.; Schreve, K.This paper presents the design of a joystick-type user interface for the master-slave control of a seven degree of freedom (DOF) minimally invasive surgical robot. The joystick is a seven DOF all revolute articulated arm. The electronic design implements AS5040 magnetic rotary encoders for the joystick’s position and orientation tracking. The control system required the mathematical modelling of the joystick and robot using the Denavit- Hartenberg convention. Testing demonstrates the intuitiveness of the joystick control.