function [] = describeStewartPlatform(stewart) % describeStewartPlatform - Display some text describing the current defined Stewart Platform % % Syntax: [] = describeStewartPlatform(args) % % Inputs: % - stewart % % Outputs: arguments stewart end fprintf('GEOMETRY:\n') fprintf('- The height between the fixed based and the top platform is %.3g [mm].\n', 1e3*stewart.geometry.H) if stewart.platform_M.MO_B(3) > 0 fprintf('- Frame {A} is located %.3g [mm] above the top platform.\n', 1e3*stewart.platform_M.MO_B(3)) else fprintf('- Frame {A} is located %.3g [mm] below the top platform.\n', - 1e3*stewart.platform_M.MO_B(3)) end fprintf('- The initial length of the struts are:\n') fprintf('\t %.3g, %.3g, %.3g, %.3g, %.3g, %.3g [mm]\n', 1e3*stewart.geometry.l) fprintf('\n') fprintf('ACTUATORS:\n') if stewart.actuators.type == 1 fprintf('- The actuators are modelled as 1DoF.\n') fprintf('- The Stiffness and Damping of each actuators is:\n') fprintf('\t k = %.0e [N/m] \t c = %.0e [N/(m/s)]\n', stewart.actuators.k(1), stewart.actuators.c(1)) if stewart.actuators.kp > 0 fprintf('\t Added parallel stiffness: kp = %.0e [N/m] \t c = %.0e [N/(m/s)]\n', stewart.actuators.kp(1)) end elseif stewart.actuators.type == 2 fprintf('- The actuators are modelled as 2DoF (APA).\n') fprintf('- The vertical stiffness and damping contribution of the piezoelectric stack is:\n') fprintf('\t ka = %.0e [N/m] \t ca = %.0e [N/(m/s)]\n', stewart.actuators.ka(1), stewart.actuators.ca(1)) fprintf('- Vertical stiffness when the piezoelectric stack is removed is:\n') fprintf('\t kr = %.0e [N/m] \t cr = %.0e [N/(m/s)]\n', stewart.actuators.kr(1), stewart.actuators.cr(1)) elseif stewart.actuators.type == 3 fprintf('- The actuators are modelled with a flexible element (FEM).\n') end fprintf('\n') fprintf('JOINTS:\n') switch stewart.joints_F.type case 1 fprintf('- The joints on the fixed based are universal joints (2DoF)\n') case 2 fprintf('- The joints on the fixed based are spherical joints (3DoF)\n') end switch stewart.joints_M.type case 1 fprintf('- The joints on the mobile based are universal joints (2DoF)\n') case 2 fprintf('- The joints on the mobile based are spherical joints (3DoF)\n') end fprintf('- The position of the joints on the fixed based with respect to {F} are (in [mm]):\n') fprintf('\t % .3g \t % .3g \t % .3g\n', 1e3*stewart.platform_F.Fa) fprintf('- The position of the joints on the mobile based with respect to {M} are (in [mm]):\n') fprintf('\t % .3g \t % .3g \t % .3g\n', 1e3*stewart.platform_M.Mb) fprintf('\n') fprintf('KINEMATICS:\n') if isfield(stewart.kinematics, 'K') fprintf('- The Stiffness matrix K is (in [N/m]):\n') fprintf('\t % .0e \t % .0e \t % .0e \t % .0e \t % .0e \t % .0e\n', stewart.kinematics.K) end if isfield(stewart.kinematics, 'C') fprintf('- The Damping matrix C is (in [m/N]):\n') fprintf('\t % .0e \t % .0e \t % .0e \t % .0e \t % .0e \t % .0e\n', stewart.kinematics.C) end