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This paper deals with equivalent 2-D finite-element (FE) models of permanent magnet lead screw (PMLS), to accurately predict the thrust force. Due to the helical-shape permanent magnets (PMs), the magnetic fields of PMLS are typically 3-D and non-symmetric. However, the PMLS is approximately symmetric in some cases and an equivalent 2-D axis-symmetric FE model is developed instead of 3-D models. The...
This paper introduces an inductor magnetic lead screw (IMLS) for simplify the structure of magnetic lead screw (MLS). The IMLS is formed on the basis of reluctance MLS with toroidal windings on both sides of the screw. The windings are assigned by dc current of reserved direction to produce magnetic flux through the air gap. The degree of freedom of the nut and screw is limited to avoid the brush...
This paper proposes two decoupling methods for a flexible tactile sensor, improved back propagation neural network (BPNN) and radical basis function neural network (RBFNN). In the numerical experiments, the number of hidden layer nodes of the BPNN is optimized and k-fold-cross-validation (k-CV) method is also applied to construct the dataset. Information of the tactile sensor array at different scales...
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