Modification of Adaptive Disturbance Rejection Control for an Active Magnetic Bearing

Matras, Alex; Balas, Mark J.

doi:10.2514/6.2005-5954

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…From the equation (12), we can figure out the transfer functions between the pitch angle and nozzle deflection denoted as well as the pitch angle and angle of attack in the equation (13).…”

Section: Servo Systemmentioning

confidence: 99%

Control Enhanced and Parameterized Load Relief technology for a Launch Vehicle

Yang

Tang

2015

AIAA Modeling and Simulation Technologies Conference

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The major disturbance to the launch vehicle during the high dynamic pressure period is inflight winds, and it causes extra aerodynamic load and significant magnitude of bending moment. Load relief system is used to decrease the aerodynamic load by reducing the angle of attack to increase the launching capability. This paper focuses on the load control technology when the launch vehicle passes through the strong wind area. Firstly, by analyzing and simulating the load relief system of the traditional launch vehicles including long march 3A, atlas/centaur, Saturn Ⅴ, titan Ⅲ and Ariane 5, this paper points out the advantages and disadvantages of classical passive trajectory correction method and four active load control methods. Besides, the control enhanced and parameterized technology (CEPT) is putted forward from the active disturbance rejection control (ADRC) and load relief cell. On the one hand, the error signal observed by the modified state observer is introduced to compensate the uncertain error signal observed by extended state observer in the ADRC loop; on the other hand, the load relief cell is introduced into the initial control system to enhance the load relief capability; at last, the control law of the CEPT controller is parameterized, a method is given to select the gains in the control law, and the load restriction effect under the combination of CEPT and initial controller is shown. Taking a kind of liquid launch vehicle as an example, and considering the inherent elastic vibration and liquid sloshing, this paper compares the load relief effect under different control architectures motioned above. The simulation result indicates that the CEPT controller expands the range of the parameters, enhances the disturbance rejection capacity for the flight control system, and efficiently improves the load control effect.

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“…From the equation (12), we can figure out the transfer functions between the pitch angle and nozzle deflection denoted as well as the pitch angle and angle of attack in the equation (13).…”

Section: Servo Systemmentioning

confidence: 99%

Control Enhanced and Parameterized Load Relief technology for a Launch Vehicle

Yang

Tang

2015

AIAA Modeling and Simulation Technologies Conference

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“…Other works focused on varying speed rotors due to the importance of crossing of critical speeds [68] or multiple-plane balancing [14]. A survey from Zhou and Shi [77] In his doctoral dissertation [52] and other works [53], Matras has extended the previous research on Adaptive Disturbance Rejection. Similar to the previous work, a rigid rotor with 2+2 degrees-of-freedom was supported by a pair of radial active magnetic bearings.…”

Section: Organization Of Dissertationmentioning

confidence: 99%

“…Similar to this work, Matras used a radial active magnetic bearing supported rotor system to simulate and to implement the ADR control scheme. As described in[51], an existing magnetic bearing setup driven by an electric motor was used along with an external simulated sinusoidal disturbance signal to investigate the effectiveness of the ADR method. The rotor was modeled as a rigid-body with 2+2 degrees-of-freedom.…”

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confidence: 99%

Adaptive Disturbance Rejection and Stabilization for Rotor Systems With Internal Damping

Simon

Flowers

2009

Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts a and B

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Advanced rotor systems today consist of a lightweight rotor supported by radial active magnetic bearings. It has been shown in previous works that composite materials have high energy dissipation characteristics, mainly due to internal damping. In applications where the rotor speed is subcritical, this property is of low concern, whereas at supercritical speeds the effect of internal damping should not be ignored due to instability effects described in detail later. Therefore, it is essential that one must have a detailed understanding of the sources and effects of internal damping in these structures. This work addresses the application of Adaptive Disturbance Rejection control method to deal with the rotordynamic instability caused by internal damping and synchronous vibrations caused by mass imbalance in a rotor system operating at supercritical speed. The simulated system is a slim, flexible shaft represented by a 73-node finite element model. A detailed description of the problems and the strategies for addressing them are discussed.

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Tuning of ADRC for QTR in Transition Process Based on NBPO Hybrid Algorithm

Wang

Duan

et al. 2019

IEEE Access

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The quad tilt rotor (QTR) has complex dynamics characteristics, and the environmental factors have a great influence on it. This increases the difficulty of its control especially in transition mode. To solve this problem, the design of the controller based on active disturbance rejection control (ADRC) with a novel tuning algorithm is proposed in this paper. The aerodynamic models of propeller, wing, vertical tail and fuselage are build respectively by using the idea of component modeling. The pitch channel of the linearized flight dynamic model is provided for the control system. A simple tuning method of active disturbance rejection control for the quad tilt rotor in transition process that achieves high performance and good robustness is presented. The proposed method makes ADRC become easy to tune and more practical. The problem of parameter tuning is turned into a multi-objective optimization problem, and using radial basis function(RBF) neural network with particle swarm optimization algorithm(PSO) and bacterial foraging optimization algorithm(BFO) hybrid algorithm tuning method(NBPO) to fit the tuning rules. We introduce the control input, the overshoot and rise time of the system into the fitness function. The local and global optimal solutions are introduced into the chemotaxis and migration to improve the information exchange ability of BFO. The correctness and effectiveness of the NBPO tuning method were verified by numerical simulation results, compared with the one parameter tuning method(OPM) and PID, the results showed that the NBPO tuning method can greatly improve the control performance of the system.

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Modification of Adaptive Disturbance Rejection Control for an Active Magnetic Bearing

Cited by 3 publications

References 6 publications

Control Enhanced and Parameterized Load Relief technology for a Launch Vehicle

Control Enhanced and Parameterized Load Relief technology for a Launch Vehicle

Adaptive Disturbance Rejection and Stabilization for Rotor Systems With Internal Damping

Tuning of ADRC for QTR in Transition Process Based on NBPO Hybrid Algorithm

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