Experimental performance evaluation of magnetic actuator used in rotating machinery analysis

Castro, Hélio Fiori de; Furtado, Rogério Mendonça; Cavalca, Kátia Lucchesi; Pederiva, Robson; Butzek, Norman; Nordmann, Rainer

doi:10.1590/s1678-58782007000100013

Cited by 7 publications

(13 citation statements)

References 10 publications

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“…To validate the model, the frequency spectrum of the disc displacement from the numerical simulation and the experimental test are compared. The comparison is accomplished for two different rotational speeds (30 and 35 Hz) and three external excitation frequencies of the magnetic actuator (20,25,and 30 Hz). In all cases, a sinusoidal force with magnitude of 10 N is used in one direction of the actuator x 1 or x 2 (Figure 12(a) and (b)).…”

Section: Simulated and Experimental Resultsmentioning

confidence: 99%

“…[18][19][20][21][22][23] Furtado 24 developed a one direction magnetic actuator and applied it as an excitation source in a classical modal analysis procedure. In his work, constructive aspects concerning magnetic actuators can be found as in Castro et al 25 and Furtado et al [26][27][28] A biaxial magnetic actuator was developed by Mendes 29 and its constructive aspects can also be found in Mendes et al 30 A simulated classical modal analysis, using a FEM of the same rotor in the work of Furtado 24 but with the model of the biaxial actuator, is presented in Mendes et al 31 The use of the biaxial actuator, based on magnetic field measurements to control the external force applied for complex modal analysis, is the topic of current research. Differently from previous works with similar proposal, which uses current and air gap measurements; here, the external excitation force control is based on the magnetic field directly measured by hall sensor positioned in the pole center of the magnetic actuator core.…”

Section: Introductionmentioning

confidence: 99%

“…Furtado 24 developed a one direction magnetic actuator and applied it as an excitation source in a classical modal analysis procedure. In his work, constructive aspects concerning magnetic actuators can be found as in Castro et al 25 and Furtado et al 26–28 A biaxial magnetic actuator was developed by Mendes 29 and its constructive aspects can also be found in Mendes et al 30 A simulated classical modal analysis, using a FEM of the same rotor in the work of Furtado 24 but with the model of the biaxial actuator, is presented in Mendes et al 31…”

Section: Introductionmentioning

confidence: 99%

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Analysis of a complete model of rotating machinery excited by magnetic actuator system

Mendes

Cavalca

Ferreira

2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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Rotating machines have a wide range of application involving shafts rotating at high speeds that must have high confidence levels of operation. Therefore, the dynamic behavior analysis of such rotating systems is required to establish operational patterns of the equipment, providing the basis for controller development in order to reduce vibrations or even to control oil instabilities in lubricated bearings. A classical technique applied in parameter identification of machines and structures is the modal analysis, which consists of applying a perturbation force into the system and then to measure its response. However, there are mainly two problems in modal analysis concerning the excitation of rotating systems. First, there are limitations to the excitation of systems with rotating shafts when using impact hammers or shakers, due to friction, undesired tangential forces, and noise that can be introduced in the system response. The second problem relies in the difficulty of exciting backward whirl modes, an inherent characteristic from these systems. Therefore, the study of a non-contact technique of external excitation, also capable of exciting backward whirl modes, becomes of high interest. In this sense, this article deals with the study and modeling of a magnetic actuator, used as an external excitation source for a rotating machine, mainly in backward whirl mode. Special attention is given to the actuator model and its interaction with the rotor system. Differently from previous works with similar proposal, which uses current and air gap measurements, here the external excitation force control is based on the magnetic field directly measured by hall sensor positioned in the pole center of the magnetic actuator core. The magnetic actuator design was completely developed for this purpose, opening different paths to experimental application of this device, for example, fault detection analysis based on directional modes. It is also presented a comparison between the numerical simulations and practical tests obtained from a rotor test rig and an experimental evidence of the backward whirl was accomplished based on the numerical simulation results.

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Section: Simulated and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of a complete model of rotating machinery excited by magnetic actuator system

Mendes

Cavalca

Ferreira

2012

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The electromagnet can only generate attraction forces, as it is defined in Equation 1, where the Magnetic Force (F m ) depends on the products of the permeability coefficient (µ 0 ), cross area (A) and number of coils (N ) divided by 4. Considering the air-gap, this relation depends on the current of the solenoid (i) in the square divided by the distance of the airgap (g) squared [23]. The force value is computed and applied to the metallic parts in the simulation.…”

Section: B Simulation Environment Modelmentioning

confidence: 99%

Hardware-in-the-loop simulation approach for the Robot at Factory Lite competition proposal

Lima

Costa

Brito

et al. 2019

2019 IEEE International Conference on Autonomous Robot Systems and Competitions (ICARSC)

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Mobile robotic applications are increasing in several areas not only in industries but also service robots. The Industry 4.0 promoted even more the digitalization of factories that opened space for smart-factories implementation. Robotic competitions are a key to improve research and to motivate learning. This paper addresses a new competition proposal, the Robot@Factory Lite, in the scope of the Portuguese Robotics Open. Beyond the competition, a reference robot with all its components is proposed and a simulation environment is also provided. To minimize the gap between the simulation and the real implementation, an Hardware-in-the-loop technique is proposed that allows to control the simulation with a real Arduino board. Results show the same code, and hardware, can control both simulation model and real robot.

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“…where l is the section length, µ is the material relative permeability for the corresponding section and A is the cross sectional area [2].…”

Section: Eqmentioning

confidence: 99%

Otimização de material e geometria em magnetos de válvulas solenóides utilizando ambiente de simulação

Souza¹,

Marchese²

2019

Blucher Engineering Proceedings

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Many diesel engines use valves actuated by electromagnets in the fuel system in order to control the injection. Earlier models of these systems have pumps controlled by solenoid valves, in this case with a magnet with E shaped lamination and armature connected to the valve. From the beginning of the project, it was used the theory of transformers and the core was designed with a lamination of stacked steel sheets. In the later diesel systems, the concept of the valve and the core material were changed. Considering that, it was defined a study for the replacement of the core material, considering the development of the new materials and process available in the market. Since the component has a construction complexity, it was decided to perform a pre-analysis using a simulation ambient (ANSYS Maxwell) in order to validate the material change and possible design optimization. The material choice was made considering the magnetic response to the PWM current generation and frequency, which affects directly the core losses. The main goal of this study is to determine a material commercially available and that behaves on the same way as the current component, since no change in the performance is allowed. After the definition of material and geometry, samples were ordered for test bench validation.

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Experimental performance evaluation of magnetic actuator used in rotating machinery analysis

Cited by 7 publications

References 10 publications

Analysis of a complete model of rotating machinery excited by magnetic actuator system

Analysis of a complete model of rotating machinery excited by magnetic actuator system

Hardware-in-the-loop simulation approach for the Robot at Factory Lite competition proposal

Otimização de material e geometria em magnetos de válvulas solenóides utilizando ambiente de simulação

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