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1. 发明申请

US20220373427A1 VIBRATION CONTROL SYSTEM USING KURTOSIS RESPONSE SPECTRUM 有权
公开(公告)号：US20220373427A1
公开(公告)日：2022-11-24
申请号：US17705575
申请日：2022-03-28
申请人： Osaka Research Institute of Industrial Science and Technology , IMV CORPORATION
发明人： Akira HOSOYAMA , Yuji NAKAURA , Yoshikado YAMAUCHI
IPC分类号： G01M7/02
摘要： The present invention proposes a parameter that appropriately characterizes non-Gaussianity in a random vibration test and realizes vibration control using the parameter. A vibration control system calculates a KRS of a response waveform. The system compares a reference KRS as a target and the response KRS, and controls a characteristic of a phase used to generate a waveform for control such that the response KRS becomes equal to the reference KRS. Upon generation of the waveform for control, the waveform for control is generated by applying an appropriate random phase to each frequency component of an amplitude corresponding to PSD for control. The system controls a characteristic of this random phase (for example, standard deviation of phase distribution, or the like) per frequency, and controls the KRS of the waveform for control. The system deforms the waveform for control on the basis of an equalization characteristic, for which a transfer function of the system is taken into consideration, and calculates a drive waveform. The system sequentially updates the equalization characteristic on the basis of the response waveform and the drive waveform. The calculated drive waveform is converted into a drive signal by a D/A convertor 26, is amplified by an amplifier 28, and is provided to a vibration generator 2.

2. 发明公开

US20240125669A1 VIBRATION CONTROL SYSTEM 审中-公开
公开(公告)号：US20240125669A1
公开(公告)日：2024-04-18
申请号：US18521654
申请日：2023-11-28
申请人： IMV CORPORATION
发明人： Kazuyoshi UENO , Yoshikado YAMAUCHI , Yuji NAKAURA
IPC分类号： G01M7/02
CPC分类号： G01M7/022 , G01M7/025
摘要： A vibration control device, while applying Gaussian vibration that matches a target vibration physical quantity PSD to a test piece, makes a corresponding vibration physical quantity non-Gaussian. Using a response vibration physical quantity PSD and a target vibration physical quantity PSD, a control vibration physical quantity PSD calculation generates a control vibration physical quantity PSD for generating a drive signal. A PSD conversion converts the control vibration physical quantity PSD into a control corresponding vibration physical quantity PSD of another dimension. Using the control corresponding vibration physical quantity PSD, a control corresponding vibration physical quantity waveform calculation calculates a control corresponding vibration physical quantity waveform that is non-Gaussian. At least based on the control characteristics and the control corresponding vibration physical quantity waveform, a drive waveform calculation generates a next drive waveform such that vibration that matches the control corresponding vibration physical quantity waveform is applied to a test piece.

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