This　study　comprehensively　analyzes　the　dynamic　responses　for　sandwich　coupled　piezoelectric　motivator　system　(CPMS)　with　flexible　connections　including　couplings　and　supports.　The　excitation　equations　are　derived　independently　to　obtain　the　external　rotor　loads　of　various　forms　such　as　moving　concentrated　or　moving　distributed　loads.　Based　on　the　coordinates　transformation　and　wave　numbers　recombination,　a　solution　for　the　coupling　of　multi-segment　structures　in　arbitrary　form　is　given　by　using　the　method　of　reverberation-ray　matrix　(MRRM).　The　novel　feature　of　this　approach　lies　in　that　the　piezoelectric　vibrator　of　straight-straight,　straightcurved　coupling　under　moving　load　with　arbitrary　patterns　can　be　solved　uniformly,　and　the　connection　stiffness　at　each　node　can　be　controlled　by　the　virtual　springs.　Afterwards,　a　detailed　visualization　and　parametric　discussion　are　performed　to　investigate　the　dynamic　transverse　displacements,　which　shows　that　the　loading　velocity　and　width　can　significantly　affect　the　dynamic　characteristics　of　CPMS　within　a　certain　range,　and　the　vibration　responses　between　the　unloaded　and　loaded　sections　are　related.　Furthermore,　the　geometric　parameters　and　thermoelectric　effects　also　play　significant　roles　on　the　dynamic　responses　in　corresponding　load　velocity　range.