Titlebook: Analysis and Control of Oilwell Drilling Vibrations; A Time-Delay Systems Martha Belem Saldivar Márquez,Islam Boussaada,Silv Book 2015 Spri

arbiter

刪除

嚴(yán)厲批評

Practical Stabilization of the Drilling System dynamics. The first approach considers a coupled wave–Ordinary Differential Equation (ODE) model. The practical stabilization of the system is addressed via Lyapunov techniques allowing the design of stabilizing controllers to suppress the stick-slip and the bit-bounce. The second approach is based

Ambiguous

誘惑

single

Theorie und Praxis der Diskursforschungis chapter presents a brief compilation of the most popular modeling strategies allowing the analysis and control of a vertical oilwell drilling system. Drilling models can be classified into three general categories: 1. Lumped parameter models which regard the drillstring as a mass-spring-damper sy

變形詞

Systematisierung der Akteursgruppenich empirically captures the interaction between the cutting device and the rock. An appropriate model of friction allows gaining insight into drillstring vibration phenomena thus characterizing the dynamic behavior at bit level and making possible the development of appropriate control strategies t

大量殺死

Methodologie und analytischer Rahmensubmodels corresponding to the different levels of the drillstring. The upper extremity is accurately described by appropriate top boundary conditions including the actuators’ dynamics. Wave equation models involving viscous and viscoelastic Kelvin–Voigt internal damping are chosen to represent the

勤勉

拾落穗