%% TODO - rewrite this script %% run stewart_parameters.m format shortE %% Study the effect of the radius of the top platform position of the legs leg_radius = 50:1:120; max_disp = zeros(length(leg_radius), 6); stiffness = zeros(length(leg_radius), 6, 6); for i_leg = 1:length(leg_radius) TP.leg.rad = leg_radius(i_leg); run stewart_init.m; max_disp(i_leg, :) = getMaxPureDisplacement(Leg, J)'; stiffness(i_leg, :, :) = getStiffnessMatrix(Leg, J); end %% Plot everything figure; hold on; plot(leg_radius, max_disp(:, 1)) plot(leg_radius, max_disp(:, 2)) plot(leg_radius, max_disp(:, 3)) hold off; legend({'tx', 'ty', 'tz'}) xlabel('Leg Radius at the platform'); ylabel('Maximum translation (m)'); figure; hold on; plot(leg_radius, max_disp(:, 4)) plot(leg_radius, max_disp(:, 5)) plot(leg_radius, max_disp(:, 6)) hold off; legend({'rx', 'ry', 'rz'}) xlabel('Leg Radius at the platform'); ylabel('Maximum rotations (rad)'); figure; hold on; plot(leg_radius, stiffness(:, 1, 1)) plot(leg_radius, stiffness(:, 2, 2)) plot(leg_radius, stiffness(:, 3, 3)) hold off; legend({'kx', 'ky', 'kz'}) xlabel('Leg Radius at the platform'); ylabel('Stiffness in translation (N/m)'); figure; hold on; plot(leg_radius, stiffness(:, 4, 4)) plot(leg_radius, stiffness(:, 5, 5)) plot(leg_radius, stiffness(:, 6, 6)) hold off; legend({'mx', 'my', 'mz'}) xlabel('Leg Radius at the platform'); ylabel('Stiffness in rotations (N/(m/rad))');