Talk:Ultrasonic motor

message: I've given a first go at the page. I hope you don't mind, but I removed some of your edits from Piezoelectric motor as the page describes an actuated stepper motor, rather than an ultrasonic motor.
Yours, Cataclysm 22:06, 2 June 2006 (UTC)
thread_title: First go

message: you somehow forgot to include a statement that a regular person can understand about "what is it good for?", or "what is its function?". I mean, in everyday life... Why would I want it Towsonu2003 15:27, 13 March 2007 (UTC)
thread_title:  What is it good for? 

message: There's no need for a separate article on Sigma's trade name.  Let's redirect it here and say something about it. Dicklyon 04:02, 8 September 2007 (UTC)
replies: text: I changed it to redirect here; sorry, I forgot the tag and someone cleaned up after me. Dicklyon 00:25, 18 September 2007 (UTC)
thread_title: Merge from [[Hyper Sonic Motor]]

message: Is there any reference out there for some credible and/or confirmed data on precision, resolution and rate achievable with these?  —Preceding unsigned comment added by Dervish candela (talk • contribs) 17:03, 15 January 2009 (UTC)
thread_title: Any data?

message: As far as I understand it the name of the device is totally misleading. First of all there seems to be no requirement that the operating frequency is indeed in the ultrasonic range. I'm sure such a device could also work at (for instance) 8kHz, which is audible for humans. The other problem is that motors are normally named in a way that suggests eighter what is driving them (electro, diesel, ...) or how they are driven (stepper, ...) etc. So the name "ultrasonic" would suggest that this motor is driven by sound, which is wrong (while possible to do). Actually it's driven by specially "formatted" friction generated by mechanical deformation generated by electric signals. NOW: It's clear to me that the device will not be renamed, but I think the discrepancy between naming and functional principal should be "solved" in the description of the device in clear and easily understandable text (possibly close to the top). Maybe a native speaker could ... :-) ?
84.186.138.3 (talk) 11:07, 3 July 2012 (UTC)
replies: text: yes it is. you are right -- this is just a marketing bullshit and its used for some advertising CANON for example and soaping real roots of piezo-drive which are in USSR, Kiev University 188.254.90.51 (talk) 18:00, 6 December 2016 (UTC)
thread_title: Ill named device ?

message: The picture shows the linear piezo stepper motor (or inchworm motor) instead of a (possibly ultrasonic) travelling wave motor. I can kind of envisage a travelling wave motor, but its operating principles are not described in this article at all.  — Preceding unsigned comment added by 213.49.109.86 (talk) 06:07, 13 July 2012 (UTC)
thread_title:  wrong picture? 

message: Yes, I agree, the image shows an inchworm motor, not an ultrasonic motor.138.251.105.147 (talk) 12:25, 3 March 2015 (UTC)
thread_title:  wrong picture. 

message: Although "ultrasonic motor" is quite a common term used to refer to this type of motor they are almost always a piezoelectric motor.
The only other convenient actuation method that can produce the same physical effect are magnetostrictive materials, but it appears likely they will continue to be very rare in practice, it deserves a mention but it seems safe to assume that motors working in this manner will far more commonly be based on piezoelectic materials.
Distinction should probably be made between "inchworm" type drives which can operate from 0Hz upward, and drives that must operate at high or ultrasonic frequency or using pulses in that range such as slip-stick friction based drives or drives that need to develop a travelling wave of a certain velocity or amplitude to begin moving.
There is also a page for the "inchworm motor" principle which I think should also be merged into it, since the principle (at least on the microscale discussed) primarily applies to piezo motors.
I may duplicate some of this text on the piezoelectric motor talk page since both the merges would be going to there. MasterTriangle12 (talk) 01:25, 2 August 2020 (UTC)
thread_title:  Merge to Piezoelectric Motor