Nonlinear Current Control for Reluctance Actuator with Hysteresis Compensation

Liu, Yuping; Liu, Kang‐Zhi; Yang, Xiaofeng

doi:10.1155/2014/150345

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…The deformation of the membranes provides a sti↵ness to this moving mass. The actuators are linearized using an approximation of the measured relationship to compensate the inherent nonlinearity, as proposed by [25]. Now a simplified 1-D model can be proposed of the overall system and its subsystems (See Figure 4).…”

Section: Modelling and Design Of The Actuatormentioning

confidence: 99%

The application of fractional order control for an air-based contactless actuation system

2018

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Industry pushes towards ever faster and more accurate production of thin substrates. Contactless positioning offers advantages, especially in terms of risk of breakage and contamination. A system is considered designed for contactless positioning by floating a silicon wafer on a thin film of air. This paper focuses on the design of a control system, including actuators, sensors and control method, suitable for this purpose. Two cascaded control loops, with decoupled SISO controllers, are implemented for this moving mass controlled on a mass-spring system, which can be modelled as a fourth order system. The SISO controllers are first designed with classic loopshaping tools, which are then modified using fractional control. Two arguments based on examples in this system are given for the application of fractional control. Firstly, to increase the bandwidth of a regular mass-spring system, and secondly to control a plant which behaves fundamentally fractional, such as the moving mass in this cascaded fourth order system. By merely the application of fractionality, the bandwidths are extended by 14.6 % and 62 %, for the inner and outer loop respectively. A closed-loop positioning bandwidth of the wafer of 60Hz is achieved, resulting in a positioning error of 104nm (2σ value), which is limited by sensor noise and pressure disturbances. This paper shows how the extension of classic loopshaping tools with fractional control can directly improve the performance, without adding to the complicatedness of the control system. Moreover it demonstrates a working concept of a novel type of contactless actuator.

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Section: Modelling and Design Of The Actuatormentioning

confidence: 99%

The application of fractional order control for an air-based contactless actuation system

2018

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“…Hence, proper control strategies are essential for this purpose. ere are two basic control strategies of the grid-connected current, that is, indirect current control and direct current control [16][17][18][19]. Indirect current control uses the vector relationship of the output voltage, so that the grid-connected current can achieve the expected amplitude and phase, without the introduction of AC current feedback.…”

Section: Introductionmentioning

confidence: 99%

First-Order and High-Order Repetitive Control for Single-Phase Grid-Connected Inverter

Guo¹,

Zhong

Zhao

et al. 2020

Complexity

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With the increasing demand of users for power sources and quality, how to provide high-quality renewable clean energy has become a key issue of power electronics. The main idea of this paper is to develop a composite control including a PI control and repetitive control for a single-phase grid-connected inverter to eliminate the effects of harmonics, which can obtain better steady-state and dynamic responses of the single-phase inverter system and reduce the net current harmonics. The modelling of a single-phase inverter is first introduced; then a first-order repetitive control is developed for the proposed grid-connected inverter. Moreover, a high-order repetitive controller is adopted to further improve the robustness against the uncertainties in the period of signals. The stability and performance analysis are given for the first-order repetitive control and high-order repetitive control. Finally, comparative simulations are conducted in a circuit-level inverter model, which show the effectiveness of the proposed method.

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“…Additional efforts have investigated the magnetic hysteresis effect on the force generation of reluctance actuators for high-precision applications. One-dimensional analyses can be found in [22,23], whereas 2D and 3D finite element (FE) approaches have been also proposed [24]. All of these works address the hysteresis phenomenon exclusively on soft magnetic materials.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Validation of the Radial Force Capability of Bearingless Hysteresis Drives

et al. 2018

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The hysteresis motor technology combined with the magnetic suspension makes bearingless hysteresis drives very appealing for high-and ultra-high-speed applications. Such systems exploit the magnetic behavior of the rotor material to achieve mechanical torque, but the hysteresis can significantly influence the magnetic suspension performance. The literature so far has focused mainly on the motor investigation. On the bearing side, the design and the performance assessment have been carried out by neglecting the hysteresis phenomenon of the rotor material. In those cases, the hysteresis of the rotor material is negligible and hence it slightly affects the force generation. In a wider perspective, this paper intends to investigate the force capability of electromagnetic actuators based on materials of large magnetic hysteresis behavior. To this purpose, the proposed numerical model, based on the finite element method, accounts for the magnetic hysteresis. The experimental results confirm the validity of the modeling approach, thus providing a useful tool for the design as well as the investigation of such systems.

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Nonlinear Current Control for Reluctance Actuator with Hysteresis Compensation

Cited by 6 publications

References 12 publications

The application of fractional order control for an air-based contactless actuation system

The application of fractional order control for an air-based contactless actuation system

First-Order and High-Order Repetitive Control for Single-Phase Grid-Connected Inverter

Modeling and Validation of the Radial Force Capability of Bearingless Hysteresis Drives

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