Method for optimizing structure size of multi-directional force sensor

The invention relates to a method for optimizing the structure size of a multi-dimensional force sensor, which is used for optimization by using the most important two performance indexes, namely the sensitivity and the linearity of the sensor as an optimized objective function on the basis of solving analytic solutions of stress and strain of the sensor. The method comprises the following steps of: establishing a mathematical model of an elastomer under various working conditions according to a mechanical model of the sensor, and solving the analytic solutions of the stress and the stain of the sensor; and optimizing the main structure size of the sensor by using the sensitivity and the linearity of the sensor as the optimized objective function of the structure size on the basis of the analytic solutions of the stress and the strain. The invention has the characteristics that: the optimization method is simple and effective; the problem that an extremely good balance point is difficult to reach among the accuracy, the linearity and the sensitivity of the multi-directional force sensor is solved well; and the measurement accuracy, linearity and sensitivity of the sensor are improved.