Feasibility study on the basis of a prototype for automated vehicle positioning in inductive charging process

In this paper, the concept discussed in [5] is subjected to a feasibility study. The aim here was to determine the maximum possible positioning radius and the correct position of the magnetoresistive (MR) sensors. For the first time, the investigated concept solves the problem of automatic positioning via the inductive charging coil using the magnetic field-based measuring technology MPPS (Magnetic Pulse Positioning System) [1-4]. To perform the feasibility study, the concept was applied and implemented in prototype on a 1:5-scale model vehicle. Initially, the magnetic interference was investigated and identified. This primarily emanated from the drive and steering systems. Subsequently, the necessary reduction countermeasures were put in place. Based on these results, the optimal position of the MR sensors was determined and they were positioned relative to the MPPS. With the given sensor configuration and the test coil used, it was possible to achieve a maximum model vehicle positioning radius of 3 m. Positioning automation remained excellent at this distance. These results show that the concept discussed in [5] can be applied and implemented on a vehicle.