Disturbance observer-based optimal longitudinal trajectory control of near space vehicle

Xia, Rongsheng; Wu, Qingxian

doi:10.1007/s11432-018-9683-y

Cited by 18 publications

(16 citation statements)

References 7 publications

(13 reference statements)

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“…Assumptions 1-3 are reasonable for VSNSV attitude tracking control. Assumption 1 guarantees that the trajectory tracking is achievable, and can be found in the extant literature about attitude tracking control for near-space vehicles [2,4,11]. The total disturbance considered in this paper is mainly composed by modeling uncertainties and external disturbances.…”

Section: Assumption 3 There Exist Positive Constants Hmentioning

confidence: 99%

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Variable-Structure Near-Space Vehicles with Time-Varying State Constraints Attitude Control Based on Switched Nonlinear System

Feng

Wang

Liu

et al. 2020

Sensors

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This study is concerned with the attitude control problem of variable-structure near-space vehicles (VSNSVs) with time-varying state constraints based on switched nonlinear system. The full states of vehicles are constrained in the bounded sets with asymmetric time-varying boundaries. Firstly, considering modeling uncertainties and external disturbances, an extended state observer (ESO), including two distinct linear regions, is proposed with the advantage of avoiding the peaking value problem. The disturbance observer is utilized to estimate the total disturbances of the attitude angle and angular rate subsystems, which are described in switched nonlinear systems. Then, based on the estimation values, the asymmetric time-varying barrier Lyapunov function (BLF) is employed to construct the active disturbance rejection controller, which can ensure the full state constraints are not violated. Furthermore, to resolve the ‘explosion of complexity’ problem in backstepping control, a modified dynamic surface control is proposed. Rigorous stability analysis is given to prove that all signals of the closed-loop system are bounded. Numerical simulations are carried out to demonstrate the effectiveness of the proposed control scheme.

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Section: Assumption 3 There Exist Positive Constants Hmentioning

confidence: 99%

“…[3] However, in near space, NSVs suffer from strong nonlinearity, serious multivariate coupling and uncertainties. The particular aerodynamic characteristics and working environment not only bring benefits, but also bring difficulties to controller design [4]. Many different approaches have been developed in the past few years.…”

Section: Introductionmentioning

confidence: 99%

Variable-Structure Near-Space Vehicles with Time-Varying State Constraints Attitude Control Based on Switched Nonlinear System

Feng

Wang

Liu

et al. 2020

Sensors

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“…01 (t) is an uncertain matrix and satisfies T 01 (t) 01 (t) ≤ I. 23 Combining (10), (11), (14), and (15), the composite closed-loop system can be written as .…”

Section: State Resilient Feedback Controlmentioning

confidence: 99%

“…S 11 (t), S 12 (t), S 13 (t), and S 03 (t) are uncertain matrices and satisfy S T 11 (t)S 11 (t) ≤ I, S T 12 (t)S 12 (t) ≤ I, S T 13 (t)S 13 (t) ≤ I, and S T 03 (t)S 03 (t) ≤ I. 23 Considering (10), (11), (14), and (33), the composite closed-loop system can be written as . e(t) =Ãẽ(t) +H̃(t)…”

Section: Dynamic Output Resilient Feedback Controlmentioning

confidence: 99%

“…Many efficacious antidisturbance methods have been used to deal with the disturbances appearing in practical systems, such as the adaptive control, 8,9 the robust control, 10 the neural network control, 11,12 and the disturbance observer-based control (DOBC). [13][14][15][16][17] For some Int J Robust Nonlinear Control. 2019;29:5095-5117.wileyonlinelibrary.com/journal/rnc…”

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confidence: 99%

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Model reference resilient control for the helicopter with time‐varying disturbance

2019

Intl J Robust & Nonlinear

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In this paper, the problem of model reference resilient control is investigated for the helicopter system with the time-varying disturbance and unmeasurable states. Firstly, a disturbance observer and a state observer are built to estimate the time-varying disturbance and unmeasurable states. Then, combining the methods of model reference control and disturbance observer-based control, the state feedback robust resilient control scheme and the dynamic output feedback robust resilient control method are proposed, respectively. Under the two developed robust resilient control schemes, sufficient conditions are obtained to guarantee that the helicopter system asymptotically tracks the reference model with H ∞ performance. Finally, simulation results are presented to show the effectiveness of the model reference resilient control method. KEYWORDSdisturbance observer, dynamic output feedback control, helicopter, model reference control, resilient control, state observer INTRODUCTIONAs a very common aircraft, the helicopter has been used in many fields, such as transportation industry, communication, and local war. Different with other aircrafts, helicopters could be used in many special occasions for their unique capability, for example, first aid at sea, forest fire rescue, and commercial transportation in badly traffic place, because they can land or take off in a small limited space for example, in the work of Johnson. 1 Hence, the study of the helicopter control systems is very meaningful. Many books about helicopter control systems have been published, such as the works of Yang 2 and Mettler. 3 With the development of the helicopter, more and more results focus on the helicopter control system technique, and many excellent control methods have been used in helicopter control systems design in the works of Gadewadikar et al 4 and Mahony and Hamel. 5 Using the disturbance observer-based backstepping method, in the work of Lu et al, 6 a flight controller was designed for the small-scale helicopter. In the work of He and Han, 7 the method of feedback linearization was investigated for an unmanned helicopter model. So far, a number of results for the advanced control theory have been applied in many fields of helicopters. Meanwhile, the robustness and antidisturbance ability of the control system attract more and more attention from specialist of cybernetics.In many practical engineering applications, the systems often suffer from various disturbances and perturbations, for example, the system parameter uncertainty and the variation of external environment. Due to these disturbances, many excellent performances of control systems are always damaged, or even appear to instability. Hence, enhancing the antidisturbance ability of the closed-loop system is critical for designed controller. Many efficacious antidisturbance methods have been used to deal with the disturbances appearing in practical systems, such as the adaptive control, 8,9 the robust control, 10 the neural network control, 11,12 and the disturbance observ...

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High angle of attack flight control based on switched prescribed performance

2020

Adaptive Control & Signal

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SummaryThis article studies the high angle of attack (AOA) maneuver control based on an improved prescribed performance method, that is, switched prescribed performance control (SPP). Different from traditional prescribed performance control, multiple performance functions are considered in the SPP, which can appropriately adjust the output performance constraints. Furthermore, based on the SPP, an adjustable prescribed performance (APP) control method is developed, which requires only a continuous adjustable performance function. Then, based on the proposed APP and adaptive neural network (NN) technology, a robust adaptive NN flight control law is developed. To handle the input saturation, an improved auxiliary system is developed. According to the common Lyapunov function method, it can be concluded that the closed‐loop system is stable and the system output can meet the corresponding prescribed performance. Finally, simulations are given to illustrate the validity of the high AOA flight control law based on the proposed APP.

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Disturbance observer-based optimal longitudinal trajectory control of near space vehicle

Cited by 18 publications

References 7 publications

Variable-Structure Near-Space Vehicles with Time-Varying State Constraints Attitude Control Based on Switched Nonlinear System

Variable-Structure Near-Space Vehicles with Time-Varying State Constraints Attitude Control Based on Switched Nonlinear System

Model reference resilient control for the helicopter with time‐varying disturbance

High angle of attack flight control based on switched prescribed performance

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