Adopting the parallel mechanism as the main body of the seat and the active joints with spring dampingelements as the vibration actuator, we established the damping seat model with the parallel mechanism of six degrees offreedom 3-PRPS. To achieve good damping effect, the damping space and flexibility of the mechanism were improved byaffecting the velocity matrix with branched speed built by vectors. Optimal parameter values were obtained by geneticalgorithm. Finally, results were synthesized and verified to provide an important theoretical basis for the practicalapplication of the mechanism.
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