This paper presents a detailed tracking based control design for toolface (TF) positioning on a rotary steerable drilling system (RSS). The RSS uses hydro-electromechanical actuators for real-time bit orientation during directional drilling. Key requirements of the RSS are to adjust the TF quickly and smoothly to track the TF command, and to maintain the TF… (More)
Research area: Advanced mechatronic and control systems for efficient, reliable and environment-friendly unconventional oil/natural gas exploration and production. Control for drilling automation and well logging system.
of piston trajectory-based HCCI combustion enabled by a free piston engine. internal model-based control of a camless engine valve actuation system. Robust stabilizer design for linear time-varying internal model based output regulation and its application to an electrohydraulic system. Yoon, Yongsoon, and Zongxuan Sun. 2014. Nonlinear identification and… (More)
This paper focuses on the stabilization of an internal model based control system for reference tracking/disturbance rejection, where the physical plant is linear time invariant while the generating dynamics of the reference/disturbance is time varying. Given the inevitable linear time varying (LTV) nature of the internal model unit resulting from the time… (More)