Tong Mao teaches you the calculation of linear motor thrust
time£º2017/9/19 click£º14970
The selection of linear motor includes the calculation of effective large thrust and continuous thrust requirements.
Thrust = total mass X acceleration + friction + external stress
The calculation formula for continuous thrust is as follows:
RMSForce = continuous thrust, FA = acceleration force, Fc = uniform velocity force, Fd = deceleration force, Fw = stasis force, Ta = acceleration time, Tc = homogenization time, Td = deceleration time, Tw = stagnation time
(ML is the mass of the load, MP is the mass of the mover, Vm is the effective speed of motion, and FL is FC)
For example: When the moving load is 2.5 kg(including the motility) and the required acceleration is 30m/s<UNK>, the motor will generate 75N of force continuous thrust(assuming friction and external stress are ignored)
We select the motor according to peak thrust and continuous thrust. In general, the reliability coefficient should be set to 20 to 30 % to offset external stress and friction.
For example: We need a linear motor to move the 4kg load 0.3 meters in triangulation mode within 0.2 seconds. The motor is in the same process and the stagnation time before the return is 0.15 seconds. In order to be simple, it is assumed that friction and other unbalanced forces do not exist. Calculated from the above formula, as follows:
Effective large thrust = acceleration force = deceleration force = load X acceleration = 4 * 30 = 120N
Continuous thrust: Because of the triangular mode, there is no continuous thrust.
For more knowledge about linear Motors, welcome to Kunshan Tongmao Linear Motor: www.tmemotion.com
Linear motor