design of a mechanism for a new cultivator (part 1: path generation and dimensional synthesis)‎

mechanical weeding is one of the non-chemical methods to control weeds. in this paper a ‎new mechanism has been presented for mechanical cultivation. the machine works based on ‎the manual tools operation, which farmers still use in small scale for weeding and consists of a ‎number of four-bar linkage mechanisms. each mechanism consists of a blade which moves ‎forward (active course) and backward (passive course). the three precise position methods ‎were applied to design the mechanism. the matlab software was used for solving the equations ‎and drawing the path of motion. considering the parameters and solving the equations, a four-‎bar linkage (crank-rocker) was proposed.‎