50 lines
1.7 KiB
Mathematica
50 lines
1.7 KiB
Mathematica
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function robot = get_robot(file,opt)
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switch opt.robot_def
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case 'direct'
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ndof = 2;
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% Kinematics parameters
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switch opt.KM_method
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case 'SDH'
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case 'MDH'
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robot.theta = zeros([1,ndof+1]);
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robot.a = [0,1,1];
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robot.d = [0,0,0];
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robot.alpha = [0,0,0];
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otherwise
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disp('Bad opt.KM_method!')
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return;
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end
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% Dynamics parameters
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link_mass = [1,1];
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axis_of_rot(:,:,1) = [0;0;1];
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axis_of_rot(:,:,2) = [0;0;1];
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com_pos(:,:,1) = [1/2;0;0];
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com_pos(:,:,2) = [1/2;0;0];
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% the inertia tensor wrt the frame oriented as the body frame and with the
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% origin in the COM
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link_inertia(:,:,1) = diag([1,1,1]);
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link_inertia(:,:,2) = diag([1,1,1]);
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% manipulator regressor
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for i = 1:ndof
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robot.m(i) = link_mass(i);
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robot.axis(:,i) = axis_of_rot(i);
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robot.com(:,i) = com_pos(i);
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robot.I(:,:,i) = link_inertia(i);
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robot.mc(:,i) = link_mass*com_pos(i);
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% the inertia tensor wrt the frame oriented as the body frame and with the
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% origin in the Joint i
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com_vec2mat = vec2skewSymMat(com_pos);
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robot.I_vec(:,i) = inertiaMatrix2Vector(link_inertia-...
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link_mass(i)*com_vec2mat*com_vec2mat);
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robot.pi(:,i) = [robot.I_vec(:,i); robot.mc(:,i); robot.m(i)];
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end
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case 'urdf'
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robot = parse_urdf(file);
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case 'mat'
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robot = [];
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disp('TODO mat robot define options!')
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otherwise
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robot = [];
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disp('Bad robot define options!')
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return
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end
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