This　brief　adds　dynamic　variables　to　decentralized　periodic　event-triggered　control　(DPETC),　denoting　dynamic　DPETC　(DDPETC)　for　wireless　cyber-physical　systems　whose　sensors　are　distributed　and　bandwidths　are　limited,　and　studies　the　stability　and　L-2-gain.　In　DDPETC,　dynamic　variables　that　require　only　local　information　are　designed　and　added　to　the　event-triggered　mechanisms　(ETMs).　This　dynamic　variable　can　guarantee　that　the　ETMs　still　be　localized　which　does　not　require　information　from　other　nodes.　For　implementations　with　DDPETC,　at　each　periodic　sampling　time　the　ETMs　decide　events　based　on　new　measurements　from　local　sensors.　Those　measurements　that　trigger　the　events　are　transmitted　to　controllers,　and　after　network　transmission　delays,　they　are　received　and　the　controller　computes　the　control　actions.　The　transmissions　of　these　control　actions　from　controllers　to　actuators　are　also　decided　by　ETMs.　The　feasibility　of　the　approach　is　shown　via　two　examples.　Numerical　results　show　that,　with　the　same　stability　and　performance,　DDPETC　can　save　more　than　40%　events,　making　it　more　suitable　for　wireless　cyber-physical　systems.