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Title: Automatic control of oscillatory penetration apparatus

Abstract

A system and method for controlling an oscillatory penetration apparatus. An embodiment is a system and method for controlling a sonic drill having a displacement and an operating range and operating at a phase difference, said sonic drill comprising a push-pull piston and eccentrics, said method comprising: operating the push-pull piston at an initial push-pull force while the eccentrics are operated at a plurality of different operating frequencies within the operating range of the sonic drill and measuring the displacement at each operating frequency; determining an efficient operating frequency for the material being drilled and operating the eccentrics at said efficient operating frequency; determining the phase difference at which the sonic drill is operating; and if the phase difference is not substantially equal to minus ninety degrees, operating the push-pull piston at another push-pull force.

Inventors:
Publication Date:
Research Org.:
U.S. Department of Energy, Washington, D.C. (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1167031
Patent Number(s):
8,925,648
Application Number:
12/736,742
Assignee:
Lucon, Peter A. CHO
DOE Contract Number:
FG02-06ER84618
Resource Type:
Patent
Resource Relation:
Patent File Date: 2009 May 26
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Lucon, Peter A. Automatic control of oscillatory penetration apparatus. United States: N. p., 2015. Web.
Lucon, Peter A. Automatic control of oscillatory penetration apparatus. United States.
Lucon, Peter A. Tue . "Automatic control of oscillatory penetration apparatus". United States. doi:. https://www.osti.gov/servlets/purl/1167031.
@article{osti_1167031,
title = {Automatic control of oscillatory penetration apparatus},
author = {Lucon, Peter A},
abstractNote = {A system and method for controlling an oscillatory penetration apparatus. An embodiment is a system and method for controlling a sonic drill having a displacement and an operating range and operating at a phase difference, said sonic drill comprising a push-pull piston and eccentrics, said method comprising: operating the push-pull piston at an initial push-pull force while the eccentrics are operated at a plurality of different operating frequencies within the operating range of the sonic drill and measuring the displacement at each operating frequency; determining an efficient operating frequency for the material being drilled and operating the eccentrics at said efficient operating frequency; determining the phase difference at which the sonic drill is operating; and if the phase difference is not substantially equal to minus ninety degrees, operating the push-pull piston at another push-pull force.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 06 00:00:00 EST 2015},
month = {Tue Jan 06 00:00:00 EST 2015}
}

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