ANALYZING QUALITY OF SENSED FORCE-RESPONSE DATA DURING TESTING AND MITIGATION POOR QUALITY OUTPUT

    公开(公告)号:US20230280247A1

    公开(公告)日:2023-09-07

    申请号:US17583756

    申请日:2022-01-25

    CPC classification number: G01N3/06 G01N3/60

    Abstract: Systems and methods for automated MIMO force-response characterization of a structure-under-test. The structure-under-test is coupled to a plurality of exciter devices and a plurality of response sensors. An excitation signal is automatically and iteratively applied to each exciter device while sensor data is collected from each response sensor to collect response data for a plurality of different exciter-sensor combinations (i.e., response data collected by a single response sensor while the excitation signal is applied to a single exciter device). A signal quality test is applied to the collected sensor data and, in response to determining that the collected response data for a particular exciter-sensor combination is of insufficient quality, the data collection for that exciter-sensor combination is automatically repeated. The excitation signal can be automatically adjusted before repeating the data collection to improve the quality of the collected data for the exciter-sensor combination.

    Multi-degree-of-freedom impedance fixture for automated frequency response function measurements

    公开(公告)号:US11781941B2

    公开(公告)日:2023-10-10

    申请号:US17583923

    申请日:2022-01-25

    CPC classification number: G01M7/027 G01M7/06 G01M17/06

    Abstract: System and methods for characterizing a response of a structure-under-test to applied excitation forces using a test fixture. The fixture is selectively coupleable to the structure-under-test and is configured to hold the structure-under-test at a known position and in a known orientation relative to the fixture. A plurality of excitation devices and response sensors are coupled to the fixture. Excitation forces applied to the fixture by the excitation devices are conveyed by the fixture to the structure-under-test and each response sensor measures a dynamic response indicative of a response of the structure-under-test and the fixture to the applied excitation force. A controller receives response sensor data and applies a mathematical coordinate transformation to project the forces and moments corresponding to the applied excitation and the measured dynamic responses to a target point of the structure-under-test and to calculate a system response function based at least in part on the projection.

    MULTI-DEGREE-OF-FREEDOM IMPEDANCE FIXTURE FOR AUTOMATED FREQUENCY RESPONSE FUNCTION MEASUREMENTS

    公开(公告)号:US20230236084A1

    公开(公告)日:2023-07-27

    申请号:US17583923

    申请日:2022-01-25

    CPC classification number: G01M7/027 G01M17/06 G01M7/06

    Abstract: System and methods for characterizing a response of a structure-under-test to applied excitation forces using a test fixture. The fixture is selectively coupleable to the structure-under-test and is configured to hold the structure-under-test at a known position and in a known orientation relative to the fixture. A plurality of excitation devices and response sensors are coupled to the fixture. Excitation forces applied to the fixture by the excitation devices are conveyed by the fixture to the structure-under-test and each response sensor measures a dynamic response indicative of a response of the structure-under-test and the fixture to the applied excitation force. A controller receives response sensor data and applies a mathematical coordinate transformation to project the forces and moments corresponding to the applied excitation and the measured dynamic responses to a target point of the structure-under-test and to calculate a system response function based at least in part on the projection.

    METHODS, MATERIALS & STRUCTURES FOR MANUFACTURING A MAGNETICALLY ACTUATED EXCITER DEVICE USING 3D PRINTING

    公开(公告)号:US20230238177A1

    公开(公告)日:2023-07-27

    申请号:US17583882

    申请日:2022-01-25

    Abstract: A method for manufacturing a shaker device using 3D-printing (i.e., additive manufacturing). An electromagnet is formed by producing a bobbin body and winding an electrical conductor on the bobbin body to form an electromagnet coil. A cylindrical body is 3D-printed and the bobbin body with the electromagnet coil is coupled within an interior of the cylindrical body. A piston assembly is then positioned within the bobbin assembly. The shaker device is operated by controllably applying a magnetic field through the electromagnet coil that impinges a permanent magnet of the piston assembly to cause movement of the cylindrical body relative to the piston. By using these 3D printing techniques, the composition of materials can be varied within a single component part, fine structural details can be included in the components, and components can be 3D printed directly on each other to eliminate tolerance issues relating to small variations in component size.

    MAGNETICALLY ACTUATED EXCITER DEVICE WITH IMPACT HAMMER FUNCTION

    公开(公告)号:US20230236100A1

    公开(公告)日:2023-07-27

    申请号:US17583673

    申请日:2022-01-25

    CPC classification number: G01N3/317 G01N3/38 G01N2203/005

    Abstract: An exciter device is configured to apply both a vibrational force and an impact force to a device-under-test. A first end of a piston is couplable to the device-under-test and a second end of the piston is aligned with a position of an impact hammer tip. The impact hammer tip and an electromagnet are both coupled to a moveable housing that is positioned around the piston. The exciter device applies a vibrational force to the device-under-test when an alternating magnetic field is applied by the electromagnet to the permanent magnet causing a linear reciprocating movement of the moveable housing relative to the piston. The exciter device applies an impact force to the device-under-test when a magnet field is applied by the electromagnet to the permanent magnet causing a linear movement of the moveable housing that is sufficient to cause the impact hammer to contact the second end of the piston.

    Analyzing quality of sensed force-response data during testing and mitigation poor quality output

    公开(公告)号:US12104987B2

    公开(公告)日:2024-10-01

    申请号:US17583756

    申请日:2022-01-25

    CPC classification number: G01M99/008 G01H3/005 G01M7/00

    Abstract: Systems and methods for automated MIMO force-response characterization of a structure-under-test. The structure-under-test is coupled to a plurality of exciter devices and a plurality of response sensors. An excitation signal is automatically and iteratively applied to each exciter device while sensor data is collected from each response sensor to collect response data for a plurality of different exciter-sensor combinations (i.e., response data collected by a single response sensor while the excitation signal is applied to a single exciter device). A signal quality test is applied to the collected sensor data and, in response to determining that the collected response data for a particular exciter-sensor combination is of insufficient quality, the data collection for that exciter-sensor combination is automatically repeated. The excitation signal can be automatically adjusted before repeating the data collection to improve the quality of the collected data for the exciter-sensor combination.

    Methods, materials and structures for manufacturing a magnetically actuated exciter device using 3D printing

    公开(公告)号:US12205761B2

    公开(公告)日:2025-01-21

    申请号:US17583882

    申请日:2022-01-25

    Abstract: A method for manufacturing a shaker device using 3D-printing (i.e., additive manufacturing). An electromagnet is formed by producing a bobbin body and winding an electrical conductor on the bobbin body to form an electromagnet coil. A cylindrical body is 3D-printed and the bobbin body with the electromagnet coil is coupled within an interior of the cylindrical body. A piston assembly is then positioned within the bobbin assembly. The shaker device is operated by controllably applying a magnetic field through the electromagnet coil that impinges a permanent magnet of the piston assembly to cause movement of the cylindrical body relative to the piston. By using these 3D printing techniques, the composition of materials can be varied within a single component part, fine structural details can be included in the components, and components can be 3D printed directly on each other to eliminate tolerance issues relating to small variations in component size.

    Magnetically actuated exciter device with impact function

    公开(公告)号:US12105060B2

    公开(公告)日:2024-10-01

    申请号:US17583673

    申请日:2022-01-25

    CPC classification number: G01N3/38 G01N3/317 G01N2203/005

    Abstract: An exciter device is configured to apply both a vibrational force and an impact force to a device-under-test. A first end of a piston is couplable to the device-under-test and a second end of the piston is aligned with a position of an impact hammer tip. The impact hammer tip and an electromagnet are both coupled to a moveable housing that is positioned around the piston. The exciter device applies a vibrational force to the device-under-test when an alternating magnetic field is applied by the electromagnet to the permanent magnet causing a linear reciprocating movement of the moveable housing relative to the piston. The exciter device applies an impact force to the device-under-test when a magnet field is applied by the electromagnet to the permanent magnet causing a linear movement of the moveable housing that is sufficient to cause the impact hammer to contact the second end of the piston.

    AXIAL AND RADIAL SUSPENSION FOR A MAGNETICALLY ACTUATED EXCITER DEVICE

    公开(公告)号:US20230238867A1

    公开(公告)日:2023-07-27

    申请号:US17583802

    申请日:2022-01-25

    CPC classification number: H02K33/16

    Abstract: A suspension system for an exciter device. The exciter device includes a piston extending through an opening of a moveable housing and generates a vibrational force by causing a linear reciprocating movement of the housing relative to the piston. The suspension system includes an axial suspension magnet fixedly coupled to the housing and positioned proximate the opening. The axial suspension magnet is configured to oppose a magnetic field of a permanent magnet that is fixedly coupled to the piston and the opposing magnetic fields dampen movement of the housing relative to the piston as the first axial suspension magnet approaches the permanent magnet. A radial guide bushing is positioned within the opening surrounding a circumference of the piston. The radial guide bushing is formed of a compressible and flexible material and is configured to restrict radial movement of the housing relative to the piston.

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