Based　on　the　segmented　disc　dynamo　proposed　by　H.　K.　Moffatt,　we　give　out　the　hidden　chaotic　attractors,　which　can　show　the　imperfection　in　the　dynamo　model.　In　this　paper.　control　of　hidden　chaos　in　the　model　is　investigated　by　Lyapunov　based　nonlinear　feedback　controllers,　sliding　mode　controllers　and　hybrid　combination　of　them.　Numerical　simulations　on　the　comparative　analyses　are　presented.　Moreover,　with　the　aid　of　ORCAD-Pspice　and　oscilloscope,　hidden　chaos　can　be　implemented　by　electronic　circuit.　Compared　with　the　phase　portraits　using　MATLAB,　the　simulation　results　of　the　oscilloscope　outputs　verify　the　effectiveness　of　electronic　circuit　design.　Finally,　in　order　to　consider　the　effects　of　fractional　order,　we　analyze　the　fractional　order　chaotic　system　(FOCS)　and　consider　its　FPGA　implementation　for　the　self-exciting　homopolar　disc　dynamo.　The　results　are　helpful　for　us　to　better　understand　the　dynamics　behavior　of　disc　dynamos.　(C)　2018　Elsevier　Ltd.　All　rights　reserved.