Stefanie Gutschmidt

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This paper outlines the design of a novel teleoperated robotic system that is proposed for the felling process of Pinus Radiata on steep terrain. The system uses arboreal locomotion similar to that used by monkeys for the method of traversal between trees which has not been used in this manner previously. Machine vision for tree recognition and optimal path(More)
While vibration energy harvesting has become a viable means to power wireless sensors, narrow bandwidth is still a hurdle to the practical use of the technology. For conventional piezoelectric or electromagnetic harvesters, having multiple proof masses mounted on a beam is one way to widen the effective bandwidth. This is because the addition of proof(More)
To successfully fell a tree, semi-autonomous robotic devices must be capable of identifying the position, size and orientation of trees in the environment of a plantation forest. An approach is proposed to identify the aforementioned tree properties using data gathered from a Light Detection And Ranging (LiDAR) scanner. Trees are detected from the gathered(More)
Since many years, the University of Liège is involved in micro-electronics and micro-electromechanical systems modelling, design and integration. Recently, the University of Liege had received the opportunity to build a brand new infrastructure (clean rooms - ISO 7) with specific equipments for packaging and MEMS characterisation. This new facility(More)
A nonlinear continuum model is used to investigate the dynamic behavior of an array of N nonlinearly coupled microbeams. Investigations concentrate on the region below the array’s first pull-in instability, which is shown to be governed by several internal three-to-one and combination resonances. The nonlinear equations of motion for a two-element system(More)
A novel brachiating, biped mobility platform for tree to tree traversal is analyzed by its kinematics and dynamics. The machine performs brachiation in the horizontal plane. Firstly, the kinematic model is derived then used to investigate the workspace of the end effector. The optimal grasping location is identified through the Yoshikawa manipulability(More)
This paper presents a novel application of multiparameter spectral theory to the study of structural stability, with particular emphasis on aeroelastic flutter. Methods of multiparameter analysis allow the development of new solution algorithms for aeroelastic flutter problems; most significantly, a direct solver for polynomial problems of arbitrary order(More)
The dynamic response of electro-mechanically actuated micro structures is governed by nonlinear effects which directly influence their performance. To date, most work in the field of micro/nano systems is done experimentally and documented theoretical research consists of nonlinear lumped-mass models as well as continuum mechanics approaches. Existing and(More)
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