Abstract
An analytical model that considers the static behaviour of weighing cells based on the principle of electromagnetic force compensation (EMFC) is presented. With this model, adjustment strategies for the stiffness and tilt sensitivity of EMFC weighing cells are derived. These parameters are known as limiting factors for the achievable sensitivity and measurement uncertainty respectively. In order to obtain the analytical equations of the system, linear and rigid-body behaviour is assumed. The results obtained with the model are compared with results from multi-body simulations. It is shown that, for the considered model, an optimum design that eliminates the tilt sensitivity of the weighing cell while minimizing its stiffness exists.
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