Coupling effect and control strategies of the maglev dual-stage inertially stabilization system based on frequency-domain analysis

Lin, Zhuchong; Liu, Kun; Zhang, Li; Zeng, Delin

doi:10.1016/j.isatra.2016.04.012

Cited by 7 publications

(7 citation statements)

References 14 publications

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“…The plant under study is dissected in point of interest. It expresses the run of the mill outline prerequisite of the mechanical part of the plant [13][14].…”

Section: Modeling Of Los Stabilization and Subsystemmentioning

confidence: 99%

Control Line of Sight (LOS) using Robust Control Technique

Thapliyal¹,

Punetha²

2017

IJCA

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This manuscript describes the approach to stabilize the line of sight (LOS) of 2-axis gimbal system. For stabilization of LOS the direct approach technique have been used. LOS stabilization is needed in missile guidance, gun target, and handheld cameras. The compensator has been composed utilizing Linear-Quadratic-Gaussian (LQG), Linear-Quadratic Regulator (LQR) and H-infinity technique furthermore with PID controller, to meet the prerequisite of following command rate, unsettling influence constriction and stability robustness. The plant model was simulated under disturbance and without disturbance. This paper has also demonstrated bode plot and the step response of LQR/LQG and H-infinity controller to meet the design specifications. The simulation of the plant model is carried under MATLAB tool. The result collected from H-infinity controller are far better than above all methodologies as it reduces the error up to minimum and also reduces the overshoot in the system and make the system speed faster. It also increases the Gain margin and Phase margin of the system and makes the system without lack of robustness.

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“…The plant under study is dissected in point of interest. It expresses the run of the mill outline prerequisite of the mechanical part of the plant [13][14].…”

Section: Modeling Of Los Stabilization and Subsystemmentioning

confidence: 99%

Control Line of Sight (LOS) using Robust Control Technique

Thapliyal¹,

Punetha²

2017

IJCA

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“…In terms of control strategy design, the traditional double-loop PID control and its extended methods have been widely used in this kind of motion platform due to its advantages, e.g., no need for modeling, simple design, fewer control parameters and easy adjustment, etc., and it can generally help systems achieve the specified motion accuracy under no-disturbance working conditions [11][12][13]. The control strategies based on frequency-domain analysis could suppress various coupling vibrations by expanding the system bandwidth, which optimizes the dynamic characteristics of platforms [14][15][16]. Nowadays, various modern control strategies, such as predictive control, sliding mode control, internal model control and active disturbance rejection control, have also been gradually applied in such platforms to comprehensively improve both their dynamic performance and positioning accuracy from the angles of convex optimization, nonlinear feedforward and disturbance robustness enhancement [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Identification and Decoupling Sliding Mode Control of Macro-Micro Dual-Drive Motion Platform with Mechanical Backlash

Kang,

Zhang,

Huang

et al. 2023

Machines

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A macro–micro dual-drive motion platform is a class of key system utilized in ultra-precision instruments and equipment for realizing ultra-high-precision positioning, which relates to the fields of semiconductor manufacturing, ultra-precision testing and machining, etc. Aiming at the ultra-high-precision positioning control problem of macro–micro dual-drive systems containing mechanical backlash, this paper analyzes the combined effect of mechanical coupling and backlash, and proposes a macro–micro compound control strategy. Firstly, the system dynamic model, including mechanical coupling, is established, and a quasi-linear backlash model is also proposed. Secondly, based on the above model, a stepwise nonlinear identification method is proposed to obtain the backlash characteristic online, which is the basis of accurate backlash compensation. Then, for the macro–micro structure containing the backlash, a macro decoupling control method, combined with a micro adaptive integral sliding mode control method and backlash compensation, are designed coordinately to guarantee that the large-stroke macro–micro cooperative motion reaches micron-level accuracy. Moreover, the boundary of the positioning error is adjustable by tuning the controller parameters. Finally, both the simulation and experimental results demonstrate that the proposed identification method can estimate the time-varying backlash precisely in finite time, and the system positioning accuracy can achieve an average 20 μm with long stroke and backlash influence, which is much higher than that using the traditional method and provides theoretical guidance for high-precision positioning control of a class of dual-drive motion platform.

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“…A variety of factors affect the performance of the MISP, and it is of great significance to improve the control precision of the inertial stabilization platform. Lin [5] established and the modeled the maglev dual-stage systems and applied different control strategies. In the study in [6], a new adaptive controller versus an H∞ control was proposed on a magnetic levitation.…”

Section: Introductionmentioning

confidence: 99%

Resonance Suppression of a Maglev Inertially Stabilized Platform Based on an Improved Recursive Least Square Algorithm

2022

Self Cite

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Mechanical resonance occurs during the operation of a maglev inertially stabilized platform (MISP). The MISP is driven by the motor gear and the gear clearance changes during commutation, which makes the resonance frequency variable. Conventional notch filters with constant parameters are not ideal for variable frequency resonance suppression. In this study, the forgetting factor in the recursive least squares (RLS) algorithm was improved to estimate the resonance frequency online. By adjusting the frequency parameters of the notch filter, the proposed measures can effectively suppress the variable frequency resonance in a dual-stage MISP system. Finally, a simulation example is presented to validate the arguments in this study.

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Coupling effect and control strategies of the maglev dual-stage inertially stabilization system based on frequency-domain analysis

Cited by 7 publications

References 14 publications

Control Line of Sight (LOS) using Robust Control Technique

Control Line of Sight (LOS) using Robust Control Technique

Nonlinear Identification and Decoupling Sliding Mode Control of Macro-Micro Dual-Drive Motion Platform with Mechanical Backlash

Resonance Suppression of a Maglev Inertially Stabilized Platform Based on an Improved Recursive Least Square Algorithm

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