fourbar

Kinematics of a four-bar linkage

% fourbar simulates the kinematics of a four-bar linkage.
%
% fourbar(r1,r2,r3,r4) simulates the trajectories of a four-bar likanges of
% dimensions r1 (ground), r2 (driver), r3 (couples), and r4 (follower).
%
% fourbar(r1,r2,r3,r4,r5,beta) simulates the trajectory of a point on the
% coupler located at a distance r5 from the follower-coupler joint at an
% angle beta (in degrees) with respect to the coupler.
%
% Example
% fourbar(2,1,3,3.5,1.5,60)
%
% Contact info:
%
% Andres Tovar
% [e-mail]
% Indiana University-Purdue University Indianapolis