Determine: Magnitude of mean torque of motor, Power of the motor.

Question

Because of nature of its operations, the load torque of a machine is intermittent as follows:

During its three quarter revolution, the load torque increases uniformly from 10kNm to 15 kNm quarter revolution to 50kNm. After this for one revolution it remains constant Thus the cycle is replaced.

The machine is run by a constant torque motor running at a speed of 300rpm, in conjunction with a flywheel of mass moment of inertia of 2200 kg/

Determine:

1. Magnitude of mean torque of motor
2. Power of the motor
3. Speed fluctuation of the system.

Answer 1

The machine is operated by varying torque