A servo system differs from some stepper motor applications in that the position feedback is continuous while the motor is running; a stepper system relies on the motor not to "miss steps" for short term accuracy, although a stepper system may include a "home" switch or other element to provide long-term stability of control. For instance, when a typical dot matrix computer printer starts up, its controller makes the print head stepper motor drive to its left-hand limit, where a position sensor defines home position and stops stepping. As long as power is on, a bidirectional counter in the printer's microprocessor keeps track of print-head position.
A servo system differs from some stepper motor applications in that the position feedback is continuous while the motor is running ; a stepper system relies on the motor not to " miss steps " for short term accuracy , although a stepper system may include a " home " switch or other element to provide long - term stability of control . For instance , when a typical dot matrix computer printer starts up , its controller makes the print head stepper motor drive to its left - hand limit , where a position sensor defines home position and stops stepping . As long as power is on , a bidirectional counter in the printer 's microprocessor keeps track of print - head position .
How does a stepper system achieve stability?
How does a stepper system achieve stability ?
a "home" switch
a "home" switch