Table ll-Motor Parameters Parameter Motor兰1|Motor兰2 Motor #3 Motor Parameters Torque constant K [N-/A] 0.1 0.2 0.25 Moment of inertia Im [K.m2 2105 3-105 1-103 Armature resistance r (2] 2 1.25 Continuous torque Ta IN】 0.5 2.2 6.2 Derived parameters Electromechanical time 0.004 0.001 0.002 constant tm (s] Power rate Tc2/Im [ 12,000 31,000 38,000 Problem 4: A rotating antenna has a moment of inertia(I)of 0.8 Ib ft s2.It is driven through a 10: 1 gearbox by a DC motor(motor runs faster).The antenna must be able to rotate 180 degrees from rest in 1 s.The motor characteristics are given below.Find the motor voltage required. 500 400 300 -12V 5V 5V 100 0 50 100L118150 Torque(0n.·oz) LLLLL1L1LL 0.5 .0 Torque(N·m)Problem 4: A rotating antenna has a moment of inertia (I) of 0.8 lb ft s2 . It is driven through a 10: 1 gearbox by a DC motor (motor runs faster). The antenna must be able to rotate 180 degrees from rest in 1 s. The motor characteristics are given below. Find the motor voltage required. m Tc 2 / Im m