Aiming at problems of dimension coupling and precision restricting of multi-dimensional sensor

design a novel force / torque（ F / T） sensor of six dimensions with self-decoupling characteristics. The finite element method is adopted for static analysis on sensor

and distribution of stress and strain of structure deformation

is studied. Based on feature of structure deformation

optimize feature point positions as well as bridging form of strain gauge. At the same time

it is verified from the dimension coupling analysis that the novel sensor has an advantage of low-coupling effect and precision of the sensor is it is improved

and has a good prospect of application.