stepping motor

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stepping motor

[′step·iŋ ‚mōd·ər]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Stepping motor

An electromagnetic incremental-motion actuator which converts digital pulse inputs to analog output motion. The device is also termed a step motor. When energized in a programmed manner by a voltage and current input, usually dc, a step motor can index in angular or linear increments. With proper control, the output steps are always equal in number to the input command pulses. Each pulse advances the rotor shaft one step increment and latches it magnetically at the precise point to which it is stepped. Advances in digital computers and particularly microcomputers revolutionized the controls of step motors. These motors are found in many industrial control systems, and large numbers are used in computer peripheral equipment, such as printers, tape drives, capstan drives, and memory-access mechanisms. Step motors are also used in numerical control systems, machine-tool controls, process control, and many systems in the aerospace industry. See Computer graphics, Computer numerical control, Computer peripheral devices, Control systems, Process control

There are many types of step motors. Most of the widely used ones can be classified as variable-reluctance, permanent-magnet, or hybrid permanent-magnet types. A variable-reluctance step motor is simple to construct and has low efficiency. The permanent-magnet types are more complex to construct and have a higher efficiency.

McGraw-Hill Concise Encyclopedia of Engineering. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
There was designed one coordinate piezoelectric stepping motor of SPM nanomanipulator: the exciting voltage rate of SM piezoceramics--43.8 kHz, the amplitude of the exciting voltage 80 V, and there is developed the attractive force up to 25 N.
For the mathematical representation of the Linear Tubular Stepping Motor, a mathematical model was introduced [5] to represent the four control phases (UA, UB, UC, UD) and the shifting "x".
Los Angeles, CA, November 11, 2010 --( Oriental Motor is pleased to announce that encoder options are now available for their 0.36* and 0.72* stepping motors. With the addition of the encoder option to 0.36* and 0.72* stepping motors, Oriental Motor's entire range of stepping motors (including 0.9* and 1.8* stepping motors) now has the option for an encoder.
Usually, the stepping motor incorporates many permanent magnets into its rotor, although sometimes it uses no magnets there at all.
MDrives are a compact, powerful, and inexpensive motor technology that combine a high-torque stepping motor with on-board electronics.
The DRL series of miniature linear actuators combines a 5-phase hybrid stepping motor with an incorporated ball screw.
The AlphaSTEP stepping motor is RoHS-compliant and uses closed-loop control to eliminate loss of synchronism.
Designed for easy selection and setup, the EZ Limo Series of motorized sliders consists of a closed-loop stepping motor driving a table and slider though a ball screw.
This 0.9 degree stepping motor delivers optimum performance in contemporary medical equipment and other applications that demand sensitive position control.
The SMC-32 is an integrated controller/driver that can handle any 4-, 6- or 8-lead two/four phase stepping motor with currents up to 3A per phase, and at supply voltages up to 48V.
The chip outputs a selectable 10-bit, 20 KHz PWM, an 8-bit, 80 KHz PWM or a 16-bit DAC-compatible motor command signal necessary to directly drive the windings of a stepping motor. The microstepping rate can be programmed to designate the desired number of microsteps per full step, from 1 to 256.