7.Motor sizing and Battery sizing: - P-division-2020-2021-even/Repo-11 GitHub Wiki

7.1 Motor Sizing:

Number of Servo Motors used = 1

M = 250 g

M = 250 x 10^-3 Kg

T = M x r

T = 250 x 10^-3 x 4

T = 1 Kg-cm

Factor of safety ,f = 1.7

T' = M x r X f

T' = T x 1.7

T' = 1x 1.7 Kg-cm

T' = 1.7 Kg-cm

Torque produced by Servo Motor : 1.7 Kg-cm.

7.2 Battery Sizing:

Max current drawn by servo motor = 700 mA

No. of servo motors used = 1

Running time = 3 hours

I=Current x time x motors used =(700 x 3 x 1)

I = 2100

I = 2100 mAh

I = 2.10 Ah

Therefore battery size is 2.10 A hrs