Adaptive Fixed-Time Position Precision Control for Magnetic Levitation Systems

Wang, Junxiao; Rong, Jiayi; Yang, Jun

doi:10.1109/tase.2022.3156943

Cited by 21 publications

(7 citation statements)

References 40 publications

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“…In publication [31], authors proposed an adaptive fixed-time controller, based on disturbance compensation technology, to achieve high-efficiency position precision control for a magnetic levitation system. The proposed system has the advantage of improving steady-state performance without losing dynamic efficiency.…”

Section: Mfc Methods and Its Applicationsmentioning

confidence: 99%

The Use of a Model-Based Controller for Dynamics Improvement of the Hydraulic Drive with Proportional Valve and Synchronous Motor

Rybarczyk

Milecki

2022

Energies

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Electrohydraulic drives consist of several nonlinear elements, and the use and design of their control system is difficult. One of the most important parameters of the industrial drive is its settling time, which characterizes their dynamics. An interesting control method, which can be used for the improvement of electrohydraulic drive properties, is the model-following control (MFC). This technique enables to ensure the good control parameters of nonlinear systems in quite an easy way. In this paper, a modification consisting of changing the oil flow factor in the reference model is proposed. This improves both the dynamics of the electrohydraulic servo drive and the adaptation to the load forces, and thus energy consumption. The article describes the application of the MFC method to control an electrohydraulic servo drive in which a special proportional valve, with an permanent magnet synchronous motor (PMSM), is used. To verify the effectiveness of this method, a theoretical description of the drive is proposed. The applied MFC control system is then modeled and investigated in simulations. Lastly, laboratory investigations are made and chosen results are presented and described in the paper. The results obtained in simulation are compared with results obtained in laboratory tests. The investigations show that the usage of MFC shortens the drive settling time and, in this way, improves its dynamics.

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Section: Mfc Methods and Its Applicationsmentioning

confidence: 99%

The Use of a Model-Based Controller for Dynamics Improvement of the Hydraulic Drive with Proportional Valve and Synchronous Motor

Rybarczyk

Milecki

2022

Energies

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“…The magnetic suspension hanging system consists of two parts, i.e. the magnetic suspension crane tracking system [18]and the synchronous gravity compensation system [19] [20], where the synchronous gravity compensation system is installed on the magnetic suspension crane tracking system, as shown in Figure 1. Magnetic suspension crane tracking system is an important part of the simulation system, the existing overhead crane tracking system is limited by the site of the overall system design quality is large, which will lead to the control system response time lag and reduce the control accuracy.…”

Section: Overall Mechanism Design Of Magnetic Suspension Systemmentioning

confidence: 99%

“…∆x i = G(s) ∆u 1 ∆u 2 ∆u 3 ∆u 4 ∆u 5 ∆u 6 ∆u 7 ∆u 8 T (18) According to Equation 18, it can be seen that the air gap output of the magnetic suspension crane tracking system is controlled by the input voltage of each electromagnet, i.e., the system is a coupled system with multiple inputs and multiple outputs.…”

Section: E State Space Description Of Magnetic Suspension Crane Track...mentioning

confidence: 99%

Research on 1/6 g Environment Simulation System Based on Magnetic Levitation Suspension

Ma,

Xu,

Song

et al. 2024

IEEE Access

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The 1/6g environment simulation system is essential in scientific research, exploration, and future space development. The system is technically demanding and must accurately simulate a lowgravity environment while ensuring the reliability and precision of the experiment, which involves complex machinery and control systems that are technically challenging. This paper proposes a new simulation experiment method that combines the traditional hanging low-gravity simulation method and magnetic levitation technology.Realization of the design of the magnetic levitation suspended low gravity simulation system. The magnetically levitated overhead crane, which counteracts 5/6 of the lunar rover's gravity, is the most important component of the entire test system. The article first designs the principle scheme of the magnetically levitated hanging active following a low gravity simulation system, which reduces the influence of the bulky wheel slip structure of the existing equipment on the experiment and improves the system's antiinterference ability. Secondly, the article establishes the dynamics model of the magnetic suspension crane tracking system, analyzes and derives the relationship between the force, the magnetic suspension air gap and the voltage, and lays a theoretical foundation for the smooth operation of the precise control system. Finally, based on the cross-coupling control strategy, the magnetic suspension crane following control system is designed and the cross-coupling control system model is established.

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“…In addition, the robustness of the system toward external noises and perturbations is another criterion that should be considered. Different control methods were studied to compensate the system disturbances [34,35]. In this paper, the ER control robustness is evaluated in the final step.…”

Section: Conventional Grid-forming Control Systems and Problem Defini...mentioning

confidence: 99%

Grid-Forming Operation of Energy-Router Based on Model Predictive Control with Improved Dynamic Performance

et al. 2022

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The focus of this study is on the grid-forming operation of the Energy Router (ER) based on Model Predictive Control (MPC). ER is regarded as a key component of microgrids. It is a converter that interfaces the microgrid (s) with the utility grid. The ER has a multiport structure and bidirectional energy flow control. The ER concept can be implemented in Nearly Zero-Energy Buildings (NZEB) to provide flexible energy control. A concept is proposed where the ER works as a single grid-forming converter. The challenge is to keep the predefined reference voltage and frequency inside the NZEB in all possible modes, including the idle operation mode, current sources, and nonlinear load control. To gain stability and output voltage quality, the MPC is proposed. The design of the modified MPC algorithm with improved dynamics performance is explained. PLECS software is utilized to verify the proposed algorithm. The results demonstrate the suitable performance of the proposed control method in terms of total harmonic distortion of the output voltage. The influence of weighting coefficiencies is evaluated, showing the higher impact of the capacitor filter voltage on lowering the total harmonics distortion of the output voltage. Finally, the capability of the control system toward step change in the reference value is evaluated.

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Adaptive Fixed-Time Position Precision Control for Magnetic Levitation Systems

Cited by 21 publications

References 40 publications

The Use of a Model-Based Controller for Dynamics Improvement of the Hydraulic Drive with Proportional Valve and Synchronous Motor

The Use of a Model-Based Controller for Dynamics Improvement of the Hydraulic Drive with Proportional Valve and Synchronous Motor

Research on 1/6 g Environment Simulation System Based on Magnetic Levitation Suspension

Grid-Forming Operation of Energy-Router Based on Model Predictive Control with Improved Dynamic Performance

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