Analysis of structure factors affecting suspension force of permanent magnet system with variable magnetic flux path control

Xu, Fangchao; Guo, Yongquan; Zhou, Ran; Jin, Junjie; Zhao, Chuan; Zhang, Xiaoyou; Sun, Feng

doi:10.3233/jae-209470

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Broadly speaking, it refers to a dynamic system composed of a variety of technologies and material means. [2,3] with a long history of development or the newly researched hot technologies, such as energy technology, material technology, catalyst technology, separation technology, biotechnology, and resource recovery and utilization. Although green technologies are classified into various categories and involve a wide range of industries, the role played by multiple subjects in the process of green technology innovation needs to be described in a popular context to describe its common laws.…”

Section: Introductionmentioning

confidence: 99%

Behavioral Analysis of Subjects for Green Technology Innovation: A Tripartite Evolutionary Game Model

Guo

Zou

Zhu

2021

Mathematical Problems in Engineering

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The application of green technologies can reduce environmental hazards and promote sustainability. The connotation of green technology innovation has two main aspects: the first aspect is the generation of green technology from nothing to something, and the other aspect is the improvement and upgrading of existing green technology; these two aspects are related. However, from the existing research, there are relatively few studies on the process of green technology innovation from these two aspects at the same time. If green technology is not studied from this perspective, the evolutionary process and influencing factors of green technology from generation to development cannot be clarified, which is not conducive to the development of green technology and the realization of the goal of environmental friendliness. Research considers the green innovation process from R&D to upgrading linkages and analyses the roles of government departments, green technology R&D institutions, and green technology application enterprises in green technology innovation. In addition, the green technology application enterprises are considered to promote technology enhancement through technology application feedback with green technology R&D institutions. The evolutionary game model of three subjects was established, the strategic evolution process of different subjects was analyzed, the influence of each element on the strategic choice of different subjects was explored, and the stability analysis of strategic choice was conducted using simulation software. The study shows the following: (1) The greater the government’s punishment and support to green technology R&D institutions, the more favorable it is for green technology R&D institutions to carry out green technology R&D. (2) In green technology applications, if the government has no direct interest relationship with green technology application enterprises, the enterprises will choose negative response behavior. (3) The greater the technology enhancement gains of green technology R&D institutions and the greater the feedback gains of technology applications actively carried out by enterprises in response to the government’s call, the more the government departments tend to support green technology R&D.

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Section: Introductionmentioning

confidence: 99%

Behavioral Analysis of Subjects for Green Technology Innovation: A Tripartite Evolutionary Game Model

Guo

Zou

Zhu

2021

Mathematical Problems in Engineering

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“…Therefore, to apply the advantages and solve the problems of the PM technology, a novel control method of the suspension force controlled by the magnetic flux path has been presented by Sun et al [21,22], and the permanent magnetic suspension system with variable flux path control (PMSS-VFPC) was designed, which can be applied to the field of dust-free transmission. Moreover, on this basis, to eliminate the torque on the PM of the device and achieve the zero power suspension of the PMSS-VFPC, a novel zero-power permanent magnetic suspension system with variable flux path control (ZPPMSS-VFPC) was proposed [23], and the effects of the structure factors on the suspension force were analyzed [24].…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Validation of a Fuzzy Cascade Controller for a Zero-Power Permanent Magnetic Suspension System with Variable Flux Path Control

et al. 2021

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Magnetic suspension technology has been a promising method to achieve contactless movement, and its advantages are smooth motion, no wear, no noise and low maintenance. In previous studies, the suspension force was mainly controlled by the current in the coils, which can lead to energy loss. To solve the problem of energy loss, we have proposed a novel zero-power permanent magnetic suspension system with variable flux path control (ZPPMSS-VFPC); moreover, the interference suppression and response of the ZPPMSS-VFPC need to be further investigated. This paper aims to improve the robustness and decrease the response time for the ZPPMSS-VFPC; as a result, a fuzzy cascade controller composed of a fuzzy controller and a cascade controller is designed and applied, in which the investigated fuzzy cascade control methods include the position loop fuzzy cascade control (PLFCC) and angle loop fuzzy cascade control (ALFCC). The structure and the working principle of the proposed ZPPMSS-VFPC are introduced, and the theoretical modeling and the fuzzy cascade controller design of the system are exhibited. An experimental setup is established to validate the simulation results and to investigate the control effect of the designed controller. The experimental results demonstrate that the response times of the fuzzy cascade controller at the displacement disturbance and the force disturbance are 0.5 s and 0.6 s faster than those of the cascade control, respectively. Furthermore, the control effect of the PLFCC is better than that of the ALFCC. Overall, the fuzzy cascade controller not only has the characteristics of strong adaptability but also has the characteristics of easy adjustment parameters, which can be applied to the complex magnetic suspension system.

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Analysis of structure factors affecting suspension force of permanent magnet system with variable magnetic flux path control

Cited by 2 publications

References 5 publications

Behavioral Analysis of Subjects for Green Technology Innovation: A Tripartite Evolutionary Game Model

Behavioral Analysis of Subjects for Green Technology Innovation: A Tripartite Evolutionary Game Model

Design and Experimental Validation of a Fuzzy Cascade Controller for a Zero-Power Permanent Magnetic Suspension System with Variable Flux Path Control

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