To　better　suppress　low-frequency　vibrations　of　flexible　manipulators　induced　by　the　rotation　of　motors　and　eccentricity,　a　novel　type　of　tuned　particle　damper　(TPD)　is　designed　by　combining　the　advantages　of　classical　dynamic　vibration　absorber　(DVA)　and　particle　dampers　(PD).　Compared　to　traditional　DVAs,　this　TPD　can　reduce　additional　mass　and　effectively　broaden　the　frequency　band　of　the　DVA.　Firstly,　an　equivalent　theoretical　model　is　established　to　describe　the　frequency　tuning　principle　of　the　designed　TPD.　Based　on　the　theory　of　a　single　particle　damper,　the　equivalent　damping　and　stiffness　of　the　particles　are　calculated　through　an　approximate　approach.　Then,　a　three-degree-of-freedom　vibration　model　of　the　manipulator　system　with　the　TPD　is　built,　and　the　dynamical　characteristic　of　the　primary　resonance　for　the　coupled　system　are　analyzed　by　the　perturbation　method.　Finally,　the　experimental　platform　is　set　up　to　verify　the　theoretical　results.　A　manipulator　is　applied　to　test　the　low-frequency　vibration　absorption　of　the　designed　TPD,　and　the　vibration　suppression　effect　is　discussed　both　in　theoretical　analysis　and　experiments.