Modelling and control of the roll-stabilised control unit of a rotary steerable system directional drilling tool
| Autor: | Hamid Alturbeh, James F. Whidborne, Patrick Luk, Martin Bayliss |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
machine control
synchronous machines machine vector control drilling drilling (geotechnical) robust control valves servomechanisms closed loop systems stability permanent magnet machines voltage control permanent magnet motors control system synthesis motion control field-oriented control voltage regulation servo control roll-stabilised control unit rotary valve rotary steerable system directional drilling tool directional drilling tool control unit roll-stabilised instrumented system approach Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2018.8211 |
| Popis: | A directional drilling tool control unit whose design is based on servo control of a rotary valve using the roll-stabilised instrumented system approach has been successfully used in oil fields for over 20 years. Here, field-oriented control (FOC) is applied to cascaded voltage regulation and servo control using an open-loop plant model of the roll-stabilised control unit. The servo control is applied to the rotary valve so that drilling mud is ported in a geostationary direction despite the rotation of the drill string and the bottom hole assembly of the rotary steerable system. Voltage regulation is applied in order to provide a DC voltage bus for the servo control of the valve. A torquer or alternator, which is a type of permanent magnet synchronous machine, is the core of the roll stabilised control unit. So, a mathematical model of the torquer is derived. An FOC scheme is proposed for servo control and to provide a DC regulated voltage using the torquers. The algorithm is tested in MATLAB/Simulink. |
| Databáze: | Directory of Open Access Journals |
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