Design of multi-dimensional magnetic position sensor systems using the example of an inverse pendulum

The exact determination of displacement and rotaion of moving parts is a frequent task in automotive and industrial automation. Systems consisting of permanent magnets and magnetic flux sensors provide the advantage of a precise, robust, non-contact, i.e. wear-free measurement method. Magnetic sensors based an HallinOne(R) technology anable the design of systems which make use of the entire (3-D) set of magnetic flux density for the determination of up to six relative translational and rotational position coordinates. However, design of corresponding multi-axis magnetic encoder applications poses a quite complex task for the engineer. In this contribution, we explain the design process for multi-axis magnetic position sensing systems and present a inverse pendulum solution as an example.