To explain to start the process of screening machine

       It is understood that the process of screening machine is starting up work from stationary eccentric mass angular velocity w, then the screening machine with angular

velocity w for stable operation. Therefore, when starting mining screen, maximum torque output of the motor. Since mc ground is relatively small, approximate calculation can

be ignored. Load characteristics and m is not a constant value, the vibration of a cycle, when the mass of the vibration movement from the bottom up, the motor will be greater

energy output; down by the quality of the vibration movement, it will emit energy.
  
        In this case, the supply current will be affected. However, because of the rotary member vibrator has a large flywheel effect, the load on the motor tends to be smooth

and uniform. Taking into account this factor, when starting the sieve maximum static torque must be multiplied by a coefficient K. Generally does not allow the motor starting

time is too long. So it can be used as a rail equipment selection. Some countries in the shaker motor selection, there are certain requirements for the start-up time. In shaker

design calculations, generally allowable starting time can be slightly higher than the recommended starting time 1 ~ 2s.

         The maximum torque of the motors in general about 2 times the rated torque. Therefore, in the calculation and selection of motor power, its rated torque can be

approximated by the maximum torque to select, but also consider the circuit voltage drop. In the beginning, the acceleration is constant or nearly constant, the motor power

consumption, in addition to generating speed torque, the most of the power is mainly consumed in overcoming static torque. Then through the resonance zone, the steady state is

entered.