The linear stepper motor is generated by the interaction between the magnetic rotor core and the pulsed electromagnetic field generated by the stator. The linear stepper motor converts the rotary motion into linear motion inside the motor. But how to select the linear stepper motor? You can refer to the operating parameters of the motor
The following are the commonly used parameters of linear stepper motors
1.Maximum speed: The maximum operating speed under the determined power supply line voltage, depends on the number of back electromotive force lines of the motor, and reflects the result of the motor electromagnetic design.
2.Maximum thrust: The peak thrust of the motor, short-term, second level, depends on the safety limit capacity of the motor electromagnetic structure.
3.Maximum current: The maximum working current, corresponding to the maximum thrust, is lower than the demagnetization current of the motor.
4.Maximum continuous power consumption: Under the conditions of temperature rise and heat dissipation, the upper limit of the heat loss that the motor can continuously operate reflects the thermal design level of the motor.
5.Maximum voltage: The maximum power supply line voltage, mainly related to the insulation capacity of the motor.
6.Motor force constant: The thrust-to-current ratio of the motor, unit N/A or KN/A, reflects the result of the motor electromagnetic design, and in a sense, it can also reflect the electromagnetic design level.
7.Motor constant: The ratio of the motor thrust to the square root of power consumption, unit N/√W, is a comprehensive reflection of the motor electromagnetic design and thermal design level.
8.Back electromotive force : Motor back electromotive force (coefficient), unit Vs/m, reflects the result of the motor electromagnetic design, affecting the maximum operating speed of the motor under a certain supply voltage.
9.Motor attraction: For flat-type linear motors with iron core structure, especially permanent magnet motors, the normal attraction of the secondary permanent magnet to the primary iron core is one order of magnitude higher than the rated thrust of the motor, which directly determines the load-bearing capacity and selection of the support guide rails of the linear motion axis using the linear motor.
In summary, the selection of linear stepper motors is a process that takes into account multiple factors, including load specifications, stroke, speed, torque, speed, no-load starting frequency, phase selection, and motor selection under special environments.
Source:https://steppermotor1.livedoor.blog/archives/3241922.html