High-Gain Disturbance Observer-Based Backstepping Control With Output Tracking Error Constraint for Electro-Hydraulic Systems

We propose a high-gain disturbance observer (HGDOB)-based backstepping control with position tracking error constraint for electro-hydraulic systems to improve the position tracking performance in the presence of disturbances. The HGDOB is designed to estimate the disturbances that include the friction, the load force, and the parameter uncertainties. Auxiliary state variables are proposed to avoid amplification of the measurement noise in the HGDOB. To compensate for the disturbances while guaranteeing tolerance of the position tracking error, the backstepping controller is proposed by using the barrier Lyapunov function. As a result, the proposed method satisfies the output constraint and improves the position tracking performance in the presence of disturbances. Its performance is validated via simulations and experiments.

[1]  B. Ayalew,et al.  Cascade tuning for nonlinear position control of an electrohydraulic actuator , 2006, 2006 American Control Conference.

[2]  Shuzhi Sam Ge,et al.  Control of Coupled Vessel, Crane, Cable, and Payload Dynamics for Subsea Installation Operations , 2011, IEEE Transactions on Control Systems Technology.

[3]  C. Chung,et al.  Output feedback nonlinear control for electro-hydraulic systems , 2012 .

[4]  Chenguang Yang,et al.  Robust adaptive motion control for underwater remotely operated vehicles with velocity constraints , 2012 .

[5]  Hassan K. Khalil,et al.  Performance Recovery of Feedback-Linearization-Based Designs , 2008, IEEE Transactions on Automatic Control.

[6]  Rui Liu,et al.  A simplified approach to force control for electro-hydraulic systems☆ , 2000 .

[7]  Nariman Sepehri,et al.  Tracking Control of Hydraulic Actuators Using a LuGre Friction Model Compensation , 2008 .

[8]  Keng Peng Tee,et al.  Output-feedback adaptive control of electrostatic microactuators , 2009, 2009 American Control Conference.

[9]  Robert L. Kosut,et al.  Design of Linear Systems with Saturating Linear Control and Bounded States , 1982, 1982 American Control Conference.

[10]  Thomas Fedde,et al.  Hydraulic control system and control block , 2005 .

[11]  M. Saad,et al.  Identification and Real-Time Control of an Electrohydraulic Servo System Based on Nonlinear Backstepping , 2007, IEEE/ASME Transactions on Mechatronics.

[12]  Francis Eng Hock Tay,et al.  Barrier Lyapunov Functions for the control of output-constrained nonlinear systems , 2009, Autom..

[13]  George T.-C. Chiu,et al.  Nonlinear adaptive robust control of electro-hydraulic servo systems with discontinuous projections , 1998, Proceedings of the 37th IEEE Conference on Decision and Control (Cat. No.98CH36171).

[14]  Eric Busvelle,et al.  An adaptive high-gain observer for wastewater treatment systems , 2011 .

[15]  Bruce H. Wilson,et al.  Improved Tracking Control of Hydraulic Systems , 2001 .

[16]  Peter J. Gawthrop,et al.  A nonlinear disturbance observer for robotic manipulators , 2000, IEEE Trans. Ind. Electron..

[17]  Sridhar Seshagiri.  Position control of permanent magnet stepper motors using conditional servocompensators , 2009 .

[18]  Tzuen-Lih Chen,et al.  An optimal variable structure control with integral compensation for electrohydraulic position servo control systems , 1992, IEEE Trans. Ind. Electron..

[19]  Chung Choo Chung,et al.  Disturbance-Observer-Based Position Tracking Controller in the Presence of Biased Sinusoidal Disturbance for Electrohydraulic Actuators , 2013, IEEE Transactions on Control Systems Technology.

[20]  Alessandro Astolfi,et al.  High gain observers with updated gain and homogeneous correction terms , 2009, Autom..

[21]  Hassan Hammouri,et al.  High Gain Observer for Structured Multi-Output Nonlinear Systems , 2010, IEEE Transactions on Automatic Control.