Introduction of linear stepping motor

by:V&T Technologies     2020-01-04
Linear stepping motor application linear stepping motor is widely used in many high precision requirements, including manufacturing, precision calibration, precision fluid measurement and precise positioning motion. Linear stepping motor terminology, positioning or residual torque: when no current passes through the winding, the output of the motor can rotate to the required torque. Dynamic Torque: torque generated by the motor at a certain stepping rate. Dynamic torque can be expressed by pull in torque or pull out torque. Holding torque: When the winding is in steady state DC, it can make the motor rotate the required torque on the output shaft. Inertia: Inertial measurement of acceleration or deceleration of an object. This is used to indicate the inertia of the load moved by the motor or the inertia of the motor rotor. Linear step increment (Or step size) : The linear displacement generated by the guide screw every turn. Maximum temperature rise: the designed motor allows temperature rise. When the motor is energized, the temperature rise of the motor is inherent in the increase of electric energy temperature loss. Power loss mainly includes resistance heating (Copper loss), Iron loss and friction loss. The temperature of the motor is the sum of the total loss heating temperature and the ambient temperature. Pulse: the number of pulses applied to the motor winding per second (PPS). The pulse rate is equal to the motor stepping rate. Number of pulses per second (PPS): The number of steps generated by the motor in one second (Sometimes called'Step/second'). This is determined by the pulse frequency generated by the motor driver. Speed boost: a drive technique that increases a given load from the original low step rate to the maximum without sacrificing the motor and then reduces to the original rate. Single step response: The time required for the motor to perform the complete steps. Stepping: the angle of rotor rotation each time the motor receives a pulse. For linear motors, this step is a linear distance. Step angle: the rotation generated by each step of the rotor is measured in degrees. Number of steps per week: Rotor rotation 360 °The total number of steps required. Sum of resistance moment and moment of inertia. Torque: sum of resistance moment and moment of inertia. Pull-out torque: the maximum torque generated by the motor at a constant speed. Because the speed is constant, there is no moment of inertia. The kinetic energy and inertial load in the rotor increase the tensile moment during the circumference. Pull in (Pull) Torque: the acceleration torque of rotor inertia must be overcome, as well as the external connection of fixed connection and various friction torque during acceleration. Therefore, the traction torque is usually less than the traction torque. Torque inertia ratio: Introduction to linear stepping motor the basic principle of linear stepping motor is to mesh screws with nuts and adopt some methods to prevent the nuts from rotating relative to make the screws move axially. Generally, there are currently two ways to achieve this conversion. The first is to install an internal thread rotor in the motor. The internal thread of the rotor is meshed with the screw for linear motion. The second is the screw. The motor shaft moves linearly outside the motor through external drive nuts and screws. As a result, the design is greatly simplified, enabling the linear stepping motor to achieve accurate linear motion without using external mechanical connections in many applications. TAG stepping, motor, linear stepping
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