A Flight Control Strategy Using Robust Dynamic Inversion based on Sliding Mode Control

Yang, Inseok; Kim, Donggil; Lee, Dongik

doi:10.2514/6.2012-4527

Cited by 7 publications

(19 citation statements)

References 15 publications

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“…Hence, NDI avoids difficulties of ensuring stability between operating points. For this reason, NDI is widely applied in the aerospace industry [13][14][15][16] that operates in various equilibrium points. However, the main drawback of NDI is poor robustness.…”

Section: Introductionmentioning

confidence: 99%

Synchronization of Chaotic Gyros Based on Robust Nonlinear Dynamic Inversion

Yang¹,

Lee

2013

Journal of Applied Mathematics

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A robust nonlinear dynamic inversion (RNDI) technique is proposed in order to synchronize the behavior of chaotic gyros subjected to uncertainties such as model mismatches and disturbances. Gyro is a crucial device that measures and maintains the orientation of a vehicle. By Leipnik and Newton in 1981, chaotic behavior of a gyro under specific conditions was established. Hence, controlling and synchronizing a gyro that shows irregular (chaotic) motion are very important. The proposed synchronization method is based on nonlinear dynamic inversion (NDI) control. NDI is a nonlinear control technique that removes the original system dynamics into the user-defined desired dynamics. Since NDI removes the original dynamics directly, it does not need linearizing and designing gain-scheduled controllers for each equilibrium point. However, achieving perfect cancellation of the original nonlinear dynamics is impossible in real applications due to model uncertainties and disturbances. This paper proposes the robustness assurance method of NDI based on sliding mode control (SMC). Firstly, similarities of the conventional NDI control and SMC are provided. And then the RNDI control technique is proposed. The feasibility and effectiveness of the proposed method are demonstrated by numerical simulations.

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Section: Introductionmentioning

confidence: 99%

Synchronization of Chaotic Gyros Based on Robust Nonlinear Dynamic Inversion

Yang¹,

Lee

2013

Journal of Applied Mathematics

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“…In this section, the robust dynamic inversion (RDI) observer proposed by Yang et al is introduced [5].…”

Section: The Robust Dynamic Inversion Observermentioning

confidence: 99%

“…Also, the discontinuous vector term v(t) can be designed using the robust dynamic inversion control method [5] as:…”

Section: That E(t) = X(t) -X(t) the Error Dynamics Can Be Representementioning

confidence: 99%

“…By using FTC, many faults in wind turbines can be reduced, maintaining stability and preventing loss of power efficiency [3,4]. On the other hand, a robust dynamic inversion observer is adopted in order to tolerate faults in the speed sensors of rotors and generators by accurately tracking measured values [5]. In the case of actuator faults, the control allocation based method is applied in order to tolerate faults in the blade actuator system.…”

Section: Introductionmentioning

confidence: 99%

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Fault Tolerant Control of Wind Turbine with Sensor and Actuator Faults

Kim¹,

Yang²,

Lee³

2013

Journal of Sensor Science and Technology

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This paper presents a fault-tolerant control technique for wind turbine systems with sensor and actuator faults. The control objective is to maximize power production and minimize turbine loads by calculating a desired pitch angle within their limits. Any fault with a sensor and actuator can cause significant error in the pitch position of the corresponding blade. This problem may result in insufficient torque such that the power reference cannot be achieved. In this paper, a fault-tolerant control technique using a robust dynamic inversion observer and control allocation is employed to achieve successful pitch control despite these faults in the sensor and actuator. The observer based detection method is used to detect and isolate sensor faults by checking whether errors are larger than threshold values. In addition, the control allocation technique is adopted to tolerate actuator fault. Control allocation is one of the most commonly used faulttolerant control techniques, especially for over-actuated systems. Further, the control allocation method can be used to achieve the power reference even in the event of blade actuator fault by redistributing the lost torque due to erroneous pitch position into non-faulty blade actuators. The effectiveness of the proposed method is demonstrated through simulations with a benchmark model of the wind turbine.

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“…Research on non-linear control for the uncertainty parameters aircrafts was quite extensive, and it has been a hot issue of scholar's attention. Non-linear controls, such as robust adaptive (Rajagopal et al 2010), sliding mode (Yang et al 2012), and dynamic inversion (Nguyen et al 2006), were applied in the presence of asymmetry of aircraft and spacecraft with uncertainties or other factors. Among these methods, trajectory linearization control (TLC) is a simple but effective gain scheduling means to solve non-linear and uncertainty system.…”

Section: Introductionmentioning

confidence: 99%

The Control of Asymmetric Rolling Missiles Based on Improved Trajectory Linearization Control Method

Sun¹,

Yu²,

Zhang³

2016

J.Aerosp. Technol. Manag.

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According to motion characteristic of an asymmetric rolling missile with damage fin, a three-channel controlled model is established. The controller which is used to realize non-linear tracking and decoupling control of the roll and angle motion is introduced based on an improved trajector y linearization control method. The improved method is composed of the classic trajectory linearization control method and a compensation control law. The classic trajectory linearization control method is implemented in the time-scale separation principle. The Lipschitz non-linear state observer systematically obtained by solving the linear matrix inequality approach is provided to estimate state variables and unknown parameters, and then the compensation control law utilizing the estimated unknown parameters improves the TLC method. Simulation experiments show that the adaptive decoupling control ensure tracking performance, and the robustness and accuracy of missile attitude control are ensured under the condition of the system parameters uncertainty, random observation noise and external disturbance caused by damage fin.

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A Flight Control Strategy Using Robust Dynamic Inversion based on Sliding Mode Control

Cited by 7 publications

References 15 publications

Synchronization of Chaotic Gyros Based on Robust Nonlinear Dynamic Inversion

Synchronization of Chaotic Gyros Based on Robust Nonlinear Dynamic Inversion

Fault Tolerant Control of Wind Turbine with Sensor and Actuator Faults

The Control of Asymmetric Rolling Missiles Based on Improved Trajectory Linearization Control Method

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