Talk:Electro-hydraulic actuator
![]() | This article is rated Start-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||
|
![]() | A fact from Electro-hydraulic actuator appeared on Wikipedia's Main Page in the Did you know column on 6 August 2009 (check views). The text of the entry was as follows:
| ![]() |
Electro-hydrostatic actuators EHAs are not the latest technology
editEHAs are not the latest technology
editC. W. Helsley, Jr., "Power By Wire for Aircraft - the All-Electric Airplane", SAE, #771006, February 1977this shows the hydraulics have been eliminated and a new section or connection to linear actuator should be made. Electro-hydrostatic actuators (EHAs)are not the latest technology
Wdl1961 (talk) 01:17, 7 August 2009 (UTC)
quote ""mechanical servo-power package (MSPP) to these functions will meet the power and frequency response requirements, and will save additional weight. The MSPP consists of an electric motor, an adapter gearbox, a flywheel, a mechanical controller, and a mechanical hinge. ""
Hydraulic vs. Hydrostatic
editWhy is the title of the article "Electro-hydraulic actuator" when it describes only what an "Electro-hydrostatic actuator" is?
I'm pretty sure that hydraulic and hydrostatic are not synonyms. Shouldn't we change the article name and, more importantly, write a paragraph explaining the difference between electro-hydraulic actuators and electro-hydrostatic actuators? — Preceding unsigned comment added by 91.13.28.133 (talk) 20:29, 25 May 2016 (UTC)
- Hydraulic commonly is a synonym for hydrostatic. Also I'm unaware of any hydrokinetic counter-examples to this. Andy Dingley (talk) 19:05, 30 October 2018 (UTC)
- The first post in entirely correct, and the second post wrong. There are fundamental differences between hydraulic and hydrostatic actuator technologies. The entire article requires re-writing. The following links would be very helpful:
- Electrohydraulic_servo_valve
- https://www.moog.com/products/actuators-servoactuators/actuation-technologies/electrohydrostatic.html
- https://www.hydraulicspneumatics.com/cylinders-actuators/electrohydrostatic-actuation-energy-efficient-option
- https://r.search.yahoo.com/_ylt=Awr9Dt.6m5VdQcwAdHZXNyoA;_ylu=X3oDMTByNDZ0aWFxBGNvbG8DZ3ExBHBvcwM2BHZ0aWQDBHNlYwNzcg--/RV=2/RE=1570114618/RO=10/RU=https%3a%2f%2fpdfs.semanticscholar.org%2f4efa%2f883f7af8d08acb314ba6e5dbc7af8f9ec476.pdf/RK=2/RS=zZFN.u2bnPQImif_NakQLQy4kKc-
- https://web.archive.org/web/20080517035145/http://www.yf.com/actuation_electrohydrostatic.cfm
- 200.68.142.20 (talk) 07:18, 3 October 2019 (UTC) baden k.
Response time of EHAs
editI suggest adding details about the response time of the actuators and the systems that use them.
Also, it might be good to link to a description of the technology used in the actuators. Pneurd (talk) 12:17, 28 January 2018 (UTC)
Stepper motors?
editWhy does this article claim, "The primary development that lead to the possibility of EHAs was the precision feedback controlled conventional motor, or high-power stepper motor." I know of no use for stepper motors here, nor how they'd even be used. The purpose of an electro-hydraulic system (the topic of this article) is that a relatively simple electric motor provides the power, the precision comes from hydraulic valves. There's just no need for an electrical positioning system such as a stepper, torque motor or similar. Nor does the cited reference support this. Andy Dingley (talk) 19:04, 30 October 2018 (UTC)