Principle of stepper motor _ stepper motor design automation
often see all kinds of planetary gear motor, internal are core and the windings. Winding resistance, electricity will produce loss, the loss is proportional to the square of the size and the resistance and current, this is the copper loss, we often say that if the current is not a standard dc or sine wave, will also produce harmonic loss; Core has hysteresis eddy current effect, also can produce loss in the alternating magnetic field, its size and material, current, frequency, voltage, this is called iron losses.
copper loss and iron loss will be displayed in the form of heat, which affects the efficiency of the machine. Stepper motor general pursuit of position precision and torque output, the efficiency is low, the current is compared commonly big, high harmonic components, the frequency of the alternating current is also change with speed, thus stepping motor are widespread fever, than the general ac motor serious condition.
when current flows through the stator winding of the stator winding is a vector field. The magnetic field can drive the rotor rotating an Angle, make a pair of rotor magnetic field direction in line with the stator magnetic field direction. When the vector magnetic field of the stator rotating an Angle. Also as the rotor magnetic field to turn an Angle. For every input electrical impulses, a rotary Angle of motor before further. Its output angular displacement is proportional to the input pulse count, speed is proportional to the pulse frequency. Changing the order of the winding current, the motor will be reversed. So the available control pulse number, frequency and various phase winding of the motor power in order to control the step motor rotation.
is a must have for anyone who appreciates planetary gear motor to the greatest extent.
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