DIR Return Create A Forum - Home
---------------------------------------------------------
My Forum
HTML https://edufred.createaforum.com
---------------------------------------------------------
*****************************************************
DIR Return to: Stepper Motor
*****************************************************
#Post#: 5--------------------------------------------------
Types of Stepper Motor
DIR By: AlfredoBuenviaje
Date: August 8, 2016, 8:01 pm
---------------------------------------------------------
What is Variable Reluctant, Permanent Magnet, and Hybrid Stepper
Motor.
#Post#: 17--------------------------------------------------
Re: Types of Stepper Motor
DIR By: NorHaynieBongcarawan
Date: August 14, 2016, 12:38 am
---------------------------------------------------------
A reluctance motor is a type of electric motor that induces
non-permanent magnetic poles on the ferromagnetic rotor. Rotor
does not have any windings. Torque is generated through the
phenomenon of magnetic reluctance.
#Post#: 18--------------------------------------------------
Re: Types of Stepper Motor
DIR By: NorHaynieBongcarawan
Date: August 14, 2016, 12:46 am
---------------------------------------------------------
Hybrid stepper motors provide excellent performance in areas of
torque, speed, and step resolution. Typically, step angles for a
hybrid stepper motor range from 200 to 400 steps per revolution.
A reluctance motor is a type of electric motor that induces
non-permanent magnetic poles on the ferromagnetic rotor. Rotor
does not have any windings. Torque is generated through the
phenomenon of magnetic reluctance.
A good permanent magnet should produce a high magnetic field
with a low mass, and should be stable against the influences
which would demagnetize it.
#Post#: 19--------------------------------------------------
Re: Types of Stepper Motor
DIR By: ArleneAncheta
Date: August 14, 2016, 12:57 am
---------------------------------------------------------
Permanent Magnet (PM): Also called “tin can" or “can stock,"
these are a cheap, low resolution type of stepper motors having
step angles of typically 7.5 to 15 degrees (48 to 24 steps per
revolution.)
The working concept of a PM stepper motor can be understood
through the illustration provided below. (Please click to
enlarge.) The type utilizes permanent magnets and eliminates the
employment of rotor teeth or steps normally associated with the
other more sophisticated types of stepper motors. Instead the
rotational effect is produced through alternate magnetization of
the rotor plate. The electrical pulses applied to the windings
generate induced magnetic flux alternately which influence the
permanent magnets of the rotor. The effect of these interacting
magnetic fluxes produces the high torque levels responsible for
the required rotations.
Variable reluctance (VR): This type of stepper motor primarily
consists of a central rotor cylinder/shaft assembly made of
multiple toothed elevations over its entire radial surface. The
stator assembly, which consists of several layers of super
enameled copper wire wound over laminated iron stampings, is
kept closely attached with the rotor. The electrical pulses
applied to the stator windings produce alternately sequencing
magnetic fluxes over the rotor teeth creating a twisting effect.
These alternate push/pulls and twisting of the rotor give rise
to the required revolutions and the torque to the rotor/shaft
assembly.
Hybrid (HB): The stepper motors included in this type are more
expensive than the above types due to the following interesting
features:
Hybrid stepper motors have improved step resolution with
increment angles ranging from 3.6 to 1 degree for 100 to 400
steps per revolution respectively.
The system incorporates the advantages of both PM and VR types
and utilizes a special arrangement of permanent magnet poles
over the entire concentric multi-toothed rotor/shaft assembly.
The multi-toothed rotor assembly exhibits excellent coordination
with the magnetic fluxes generated by the stator windings, which
guides the rotor movement in a well-controlled manner across the
intermediate air gaps.
#Post#: 46--------------------------------------------------
Re: Types of Stepper Motor
DIR By: Sienna
Date: August 22, 2016, 12:22 am
---------------------------------------------------------
Three Main types of Stepper Motor
- Permanent magnet stepper.
Hybrid synchronous stepper.
Variable reluctance stepper.
-
#Post#: 54--------------------------------------------------
Re: Types of Stepper Motor
DIR By: theyseemae
Date: August 22, 2016, 2:05 am
---------------------------------------------------------
Permanent magnet motors use a permanent magnet (PM) in the rotor
and operate on the attraction or repulsion between the rotor PM
and the stator electromagnets. Variable reluctance (VR) motors
have a plain iron rotor and operate based on the principle that
minimum reluctance occurs with minimum gap, hence the rotor
points are attracted toward the stator magnet poles.
*****************************************************
Page 1 of 1