Talk:Stepper motor

message: I removed the following text from the main page.  Please feel free to readd it in a more coherent form.
> Stepper motor movements and speed are defined by which poles are on or off.
> Stepper motors are similar to DC Brush less motors due to the fact that they use poles in conjunction with magnetism.
Insert non-formatted text here
> Hard drive motors can be "sort of" thought of as stepper motors because the servo must use some kind of pole system to know where the spindle is to send it to the chip. But they are not STEPPER Motors; they are a type of DC Brush less.
> Stepper motors have been used in micro machines.
> Stepper motors are kool.
kmccoy (talk) 01:53, 11 Apr 2005 (UTC)
thread_title:  Removed items 

message: I might get to these later...
* Better description of why the voltage doesn't matter as much. (It matters only when you're trying to drive at high speed)
* Resonance problems - from load, and also driving at some frequencies >>> This leads to more constant-motion applications than dynamic.
* Load interia vs. rotor inertia - steppers only operate in a narrow range
* 5 phase motors (I don't know much about these)
Anyone want to add schematics to show some of the things described? (the coils, the transistor drive)
Can u also add some data as to what will happen if two of the consecutive stators are simultaneously charged? 202.41.93.129 04:36, 21 March 2006 (UTC)
replies: text: It increases torque some (maybe by 50% based on what I've read), and obviously doubles the power used. Dreadengineer (talk) 05:34, 27 January 2008 (UTC)
thread_title:  Things to add 

message: I changed the "Fundamentals of Operation" back to an earlier version, with a few edits. Stepper motors are very commonly used by hobbyists, so it's important to have an easily understood explanation of their operation. The previous explanation used terms such as external commutation, phases of a motor, magnetic reluctance, etc., all of which are valid, but are unnecessary for a basic understanding of fundamentals of operation. They should go in a different section, and the "Fundamentals" section should give a quick, basic understanding of how steppers work.Dreadengineer 05:22, 21 September 2007 (UTC)
thread_title: Fundamentals of Operation

message: The images that illustrated stepping had been removed with the note that they were "wrong." I'm assuming this meant that the images are not the same as the actual construction of stepper motors. But the images are effective at communicating the basic idea of how stepper motors work. Also, they are not very different from motor construction; see the "hybrid" image on this page: http://www.ams2000.com/stepping101.html or this one: http://www.sapiensman.com/step_motor/. It's true that the images don't illustrate that parts of the stator on both sides of the rotor will be energized, but adding that would add confusion to the picture and is unnecessary to explain the principle of operation. We can discuss it here if anyone disagrees. Dreadengineer (talk) 05:34, 27 January 2008 (UTC)
thread_title: Images

message: hello,
Do SRD's bear any similarity to stepper motors as i tried looking for them on wikipeida and all i got was stepper motor.
Hre is a site that has a little info on SRD's
Switch reluctance drives
many thanks
wouse101 (82.3.201.199)
:A "switched reluctance motor" is one type of stepper motor. A "switched reluctance drive" is the drive electronics or an adapted to that form of stepper motor or the entire drive system, electronics and motor.
:Atlant 15:55, 13 September 2006 (UTC)
thread_title:  Switch reluctance drives 

message: I found a Naval Electrical Pocket Book from 1933 at a car-boot sale, and was surprised to learn that step-by-step motors were used as early as the 1930s for setting the firing elevation and deflection on battle ships:
The device was electro-mechanical and human operated. They even did half-stepping. Should there be a History section in here? —The preceding unsigned comment was added by 213.58.97.242 (talk) 16:41, 15 January 2007 (UTC)
thread_title:  1930 Step-by-step motors 

message: I'm not very familiar with the subject or I would attempt to add a section or is there a reason there is nothing in the article regarding half stepping? Thorney 05:58, 12 May 2007 (UTC)
thread_title:  Why is Microstepping/Halfstepping not covered? 

message: I have just taken a quartz clock to pieces and the motor in it has a permanent magnet rotor and a long U shaped stator with a coil around it: the ends of the U nearly touch the rotor. Why does it go around only one way in half turn steps each second? there is no mechanical ratchet. Also, this type of stepper motor is not described in the article. --83.105.33.91 (talk) 10:48, 22 April 2008 (UTC)
thread_title:  Clock Motor 

message: Is there mistake in point number one of references? It is reference to book "Instrument Engineers'...".  On wikipedia page it says that the information about types of stepper motors are on page 2464 of that book, however they are on page 1377. Is it right?  —Preceding unsigned comment added by Rumcajs00 (talk • contribs) 14:39, 13 June 2009 (UTC)
thread_title:  mistake in references? 

message: I added some definition to motor types and made a minor change in the introduction, eliminating the reference to "normal DC motor".  There is nothing abnormal about a stepper motor, it's a conventional synchronous DC motor.  The original reference to "normal DC motor" is probably referring to an asynchronous DC brush motor. The concept of "normal motor" is colloquial and is open to interpretation based on the experience of the reader.  Overall, this article needs quite a bit of correction to get to proper descriptions in terms of physics and the engineering of electric machines.
--LifelongEngineer (talk) 01:37, 23 September 2009 (UTC)
replies: text: "in microstepping mode there is absolutely to stop the rotor in an arbitrary position"? that makes no sense whatsoever. the current position is determined by the phase angle, which can certainly be held at a specific value. -- 99.233.186.4 (talk) 18:48, 10 July 2010 (UTC)
thread_title:  added to types 

message: The article lacks some clarity and completeness about the distinction between parmanent magnet stepper motor and variable reluctance stepper motor. Some sections only apply to one type without even mentionning it.
For instance : in the introduction "Stepper motors are similar to switched reluctance motors": this applies to variable reluctance motors.
The animated image describes a VR motor too. "fundamentals of operation" too.
The section "two phase stepper motors" only describes permanent magnet stepper motors.--Olivier.rieux (talk) 14:12, 15 June 2010 (UTC)
thread_title:  clarification about types 

message: I believe the operation described in the figure in phase current waveform is that of a two phase unipolar stepper motor (according to the description above) and not a four phase as mentionned in the caption.--Olivier.rieux (talk) 14:40, 15 June 2010 (UTC)
thread_title:  caption mistake 

message: Contact owner of this website to add these photos?
How to build stepper motors.
http://www.aerodesign.de/peter/2001/LRK350/LRK350-20-15_eng.html
http://www.aerodesign.de/peter/2001/LRK350/Warum_dreht_er_so_eng.html#Anker1164462
--Ericg33 (talk) 03:01, 6 July 2011 (UTC)
thread_title:  Someone add images and animation 

message: In order to understand the contents of the third paragraph, clarification of the concept phase in the context of stepper motors is needed. The explanation is based on this concept and thus requires the user to first figure out what it is elsewhere. Blecchi (talk) 10:15, 1 December 2013 (UTC)
thread_title:  Clarification of the concept phase needed 

message: It says "remnant". Does it mean remanent? 213.160.127.250 (talk) 14:29, 14 April 2014 (UTC)
thread_title:  Detent torque 

message: I believe that stepper motors are commonly used in the analogue indicators of speedometers in modern motor vehicles. (I recently read a report, not on the internet, by a police crash investigator who has done research on the effect of crashes on these).  This application is not mentioned on this page, and there is no mention of stepper motors on the "Sepeedometer" page either.  Sorry but I don't know any more about this.  Is there someone out there who does, who could add a biref mention in both this page and the speedometer page? Thanks --86.160.153.66 (talk) 12:56, 24 February 2015 (UTC)
thread_title:  Applications 

message: I suspect that we are all agreed about the meaning of the term, and how it relates to one of the common ways in which most types of electric motor (DC brushed or brushless, AC induction in particular) may be mounted. However the "Flange" Wikipedia article does not mention motors at all. The omission is larger than this one article. I am suggesting that someone more experienced than me decides how to implement the necessary improvement. For instance, should every relevant motor article have a mention of mounting arrangements? (These would include foot mounting, often where chain or belt drive is used, flange where direct drive is used and axial alignment is fairly critical, or "servo" where small clamps engaging a groove are used, but there is a registration diameter on the end of the motor, like flange mount, to centre it accurately in its location.) There are almost certainly a range of other mounting styles of which I have no knowledge, hence my desire for someone else to fix this.
Tiger99 (talk) 21:04, 4 November 2018 (UTC)
thread_title:  Flange 

message: i think stepper motor  can also use as a vibrator, vibrational motor for capping bottle or shifting of any object from its container  — Preceding unsigned comment added by 27.61.157.253 (talk) 02:29, 13 December 2018 (UTC)
thread_title:  steppr use 

message: I don't understand why the latter part "Wave drive and single phase full step are both one and the same, with same number of steps but difference in torque." is in this subsection that is about full-step drivings. It makes this subsection uncleared.
Maybe it should be moved to the subsection above regarding wave drive. This senttence is also a bit unclear, so maybe also add some clearence to it. HenrikBorg (talk) 14:37, 7 August 2019 (UTC)
thread_title:  Full-step drive (two phases on)	- Unclear 

message: Currently given animation is increasingly oversimplified. AXONOV (talk) ⚑ 18:12, 26 July 2022 (UTC)
thread_title:  Animation