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A stepper or wafer stepper is a device used in the manufacture of integrated circuits (ICs). It is an essential part of the process of photolithography , which creates millions of microscopic circuit elements on the surface of silicon wafers out of which chips are made.
A stepper motor, also known as step motor or stepping motor, [1] is a brushless DC electric motor that rotates in a series of small and discrete angular steps. [2] Stepper motors can be set to any given step position without needing a position sensor for feedback. The step position can be rapidly increased or decreased to create continuous ...
A stepper is a device used in the manufacture of integrated circuits. Stepper may also refer to: Stepper motor, a type of electric motor; Wilhelm Stepper, Austro-Hungarian novelist (1899 – after 1941) Stepper (Transformers), a fictional character "Stepper", a song by Latto from 777 (2022)
Insides of a slip-stick piezoelectric motor. Two piezoelectric crystals are visible that provide the mechanical torque. [1]A piezoelectric motor or piezo motor is a type of electric motor based on the change in shape of a piezoelectric material when an electric field is applied, as a consequence of the converse piezoelectric effect.
Stepper motor From the plural form : This is a redirect from a plural noun to its singular form. This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [[link]]s ).
While stepper motors are frequently stopped with the rotor in a defined angular position, a brushless motor is usually intended to produce continuous rotation. Both motor types may have a rotor position sensor for internal feedback. Both a stepper motor and a well-designed brushless motor can hold finite torque at zero RPM.
There has been increasing popularity in closed-loop stepper motors in recent years. [7] They act like servomotors but have some differences in their software control to get smooth motion. The main benefit of a closed-loop stepper motor is its relatively low cost. There is also no need to tune the PID controller on a closed loop stepper system. [8]
Movement of the common two step Lavet motor: (a) currentless stator, north pole of rotor points to the upper left, (b) energized stator, rotor moves clockwise, and north pole points to the right afterwards, (c) after energization of the stator has declined, rotor moves further until north pole points downright,