The screw -step electric motor, also known as a linear stepper motor, is a combination of the pulse electromagnetic field generated by the magnetic rotor iron heart and the pulse of the stator, turning the motor and turning the rotation motion of the motor into a linear movement.
The principle of screw stepping motor: Make a single screw with the nut, and use some way to prevent the screw nut from rotating relative rotation, thereby making the screw axial movement. Under normal circumstances, there are two ways to realize this conversion: one is to install internal thread rotors on the motor, so that the internal thread and screw of the motor to mesh into linear motion; the other is to install an external drive at the outer end of the motor. Straight motion of nuts and screws. As a result, the design greatly simplifies the design, so that it can directly use the stepper motor to perform accurate linear movements in many applications without the need to install an external mechanical linkage device.
Scarlette step motor 1
Detailed use of screwbar step motor:
First, when the rod stepping motor is working, each winding will not always be power -on, but rotate the electricity according to a certain rule.
Second, each input of a pulse signal rotor, the corner is called a step distance.
Third, the wire stepping motor can be controlled in a specific direction, or speed control can be used. During the angle control, each pulse is entered, and the stator winding is replaced once, and the output shaft is turned out of an angle. Its steps are the same as the pulse number. During the speed adjustment, continuous pulses are injected into the step motor coil. Each winding is constantly activated, and the stepping motor continuously rotates. The speed is proportional to the pulse frequency. By changing the driving order, that is, the rotation direction of the stator magnetic field can control the forward or reversing of the motor.
Fourth, the screw step motor has a self -locking function. If the control pulse stops input, and the coil controlled by the last pulse control continues to conduct DC electricity, the motor can stay in a fixed position, that is, stay at the end of the corner displacement of the last pulse control Positioning of rotor.
