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