Multi-dimensional vibration control of engineering vehicle seat suspension
Non-road vehicle suspension has limited attenuation of impact vibration from non-paved road surfaces,and some engineering vehicles have not even been equipped with suspensions due to actual needs.Therefore,it is particularly necessary to study the vibration attenuation of special vehicle seat suspensions.The classic Tricept parallel mechanism is selected as the seat suspension main part,which has three freedom degrees to achieve effective multi-dimensional vibration attenuation.Firstly,the parallel mechanism model is built in ADAMS.Then,the fuzzy proportion-integration-differentiation(PID)active control and fuzzy PID-skyhook semi-active control,which are suitable for the mechanism,are designed,and ADAMS and MATLAB co-simulations are carried out respectively.The results show the Tricept parallel mechanism seat suspension system can achieve multi-dimensional coordinated vibration reduction.The(angular)accelerations along the vertical,pitch and roll directions are attenuated by 18.58％,42.68％and 42.5％,respectively.After the seat suspension system is combined with active control,its vibration(angular)acceleration in each direction is reduced by 37.26％,53.38％and 49.36％,respectively.After the seat suspension system is combined with semi-active control,its vibration(angular)acceleration in each direction is reduced by 43.54％,53.38％and 52.47％,respectively.
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