How to calculate the moment of inertia and torque of the output shaft of the stepping motor? I want to use the stepper motor drives the rotation of a cuboid, the cuboid size is 50X200X10mm (long X wide X thick) is the big step motor? How do you calculate the moment of inertia, torque and torque of the output shaft? Tangled! Make me! Thank you
The stepping motor is an open loop control element which transforms the electric pulse signal into angular displacement or linear displacement. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed. Stepper motor is an induction motor, its working principle is the use of electronic circuit, the DC power supply variable components, multi-phase timing control current this current stepper motor power supply, stepper motor can work normally, the power supply for the stepper motor driver is divided into the multi phase sequence controller.
Now select the important parameters of the motor has, and you just find at your speed requirements, you can output 16kg.cm torque stepper motor on it. It is best to multiply by a safety factor of 1.2 and the output torque requirement is approximately 20kg.cm.
The inertia of a stepping motor is generally related to the starting frequency. In general, the higher the starting and stopping frequency, the greater the inertia, it is recommended to use a low inertia motor or lower the drive current, voltage.If the rectangular object is flat, the contact surface will be large, and the friction will be large. Friction is the ability to overcome inertia. The friction is generally greater than the inertia of the stepper motor, and the object does not move.
Calculation of the moment of inertia and torque on the output shaft of the stepper motor: torque = force * arm, you rotate the circle 5cm long, can be considered as the radius of the wheel 0.8cm. Required torque =20*0.8=16kg.cm. How much speed is required to lift a heavy object and converted to a speed unit RPM (per minute RPM)
