Vibration Analysis / Sound Pressure Analysis

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  1. [JAC009] Sound Pressure Analysis of a Loudspeaker

    This Application Note presents how the frequency characteristics of sound pressure can be obtained using the constant Lorenz force on the voice coil, regardless of the frequency.

  2. [JAC004] Sound Pressure Analysis of a Reactor

    This Application Note shows an example of an evaluation of a reactor’s sound pressure when a part of a spacer has been removed.

  3. [JAC097] Sound Pressure Analysis of a Transformer

    This example presents the use of a coupled magnetic field and structural analysis to obtain the sound pressure distribution accounting for the electromagnetic force of the core wh…

  4. [JAC114] Vibration Analysis of an Outer Rotor Motor

    This note presents the use of a magnetic field analysis and structural analysis to obtain the sound pressure caused by electromagnetic vibrations in an outer rotor motor with hole…

  5. [W-MO-23] Measurement of PM Motor Vibration/Noise and Analysis Modeling

    While miniaturization and efficiency optimization are always in demand in motor development, demand is also increasing for the reduction of vibration and noise in recent years. As…

  6. [JAC184] Reactor Sound Pressure Analysis taking Magnetostriction into Account

    These notes will conduct an analysis of changed vibratory force and show a case study of confirming the impact magnetostriction has on vibration noise.

  7. [L-MU-93] JMAG/Adams/Simulink Coupled Vehicle Drive Simulation

    Generally, it is said that drive motors used in electric cars have less vibration than engines, however, vibration caused by torque ripple may be transmitted to the entire vehicle…

  8. [JAC020] Sound Pressure Analysis of an SPM Motor

    This Application Note shows an example of an evaluation of a reactor’s sound pressure, when acquiring electromagnetic force generated by a stator core for a SPM motor and linking …

  9. [JAC254] Vibration Analysis of a Large Oil-Filled Transformer

    In this example, evaluating vibration caused by electromagnetic excitation in a large transformer. Since large transformers are oil-cooled, in this example the oil, which is the f…

  10. [L-MO-108] Motor Performance Evaluation Considering Control

    At the motor component design stage, motor performance is evaluated using an ideal sinusoidal current.

  11. [JAC277] Vibration Analysis of Axial Gap-Type Motor

    In this example, phenomena confirmed in axial gap-type motors that occur at maximum sound pressure level, from an electromagnetic excitation force and eigen mode perspective.

  12. [JAC226] Vibration Characteristics Analysis of SPM Motors

    In this example, the acceleration is evaluated by obtaining the electromagnetic force generated in the stator core of the SPM motor at multiple rotation speeds and coupling with t…

  13. [JAC234] Vibration Characteristics Analysis of an Induction Motor

    In this example, electromagnetic force generated in the induction motor stator core is obtained, and an example of evaluating sound pressure by linking it with the eigenmode of th…

  14. [JAC138] Vibration Analysis of an SR Motor

    This Application Note presents an example of how to obtain the electromagnetic force generated in the stator core of an SR motor and evaluate the sound pressure by linking it to t…

  15. [W-VI-97] Correlation Analysis for Matching Stiffness between Actual Machine and Analysis Model

    If vibration can be estimated with high accuracy, the cost of prototype and testing can be reduced, and thus the reduction of the overall product development time is achievable.

  16. [JAC251] Alternator Vibration Analysis

    In this example, the electromagnetic force generated in the stator core of a claw pole alternator is obtained, and acceleration is evaluated with an electromagnetic force - struct…

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