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Unformatted text preview: The maximum torque produced by the motor for worm drive was 0.0249174 N-m. The maximum torque produced by the motor for spur gear was 0.0249174 N-m. Torque is found by the formula ( = m*g*d), (m: mass of the object, g: 9.81 m/sec^ 2 , d: radius of wheel). Because mass of object we used for worm drive and spur gear, torque was obtained the same number. 3) The efficiency of the motor and wheel system varies with load (mass). Efficiency is obtained by the formula [100 * Mechanical Power (joules/sec) / Electrical Power (joules/sec)], and in vertical lift systems the mechanical power is calculated by dividing the amount of work performed by the time taken to perform that work. The work is calculated by multiplying the mass times height lifted * gravity(9.81m/sec^2). Thus, as mass increases, the efficiency increases....
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- Spring '09