The objective of the HFMS Program is to develop a conceptual design for a "High Frequency Motion Simulator" (HFMS). This system will complement and extend the simulation capability of existing real time Hardware-in-the-Loop (HWIL) simulation suites. The introduction of a unique non-cascaded gimbal configuration offers the ability to increase the closed-loop frequency response of this motion simulator to the 1000 Hz region. Current FMS are limited to <50 Hz frequency response. This new concept not only provides the three angular degrees of freedom, but also provides three degrees of translation necessary to simulate airframe vibration and responses to guidance control commands. The motion base is based on a variant of a hexapod configuration. Unique joints are utilized to provide low friction coupling between the platform and actuators. The high modal frequency is achieved by using carbon graphite composite for the platform structure and actuator extensions. A multi-variable feedback system, which uses the actuator position and platform inertial accelerations, provides a control system directly related to the airframe coordinate frame. The system provides control of the three angular rotations and three linear displacements, each control loop exhibiting a 1000 Hz bandwidth.
High-frequency motion simulator
2001
14 Seiten, 2 Quellen
Conference paper
English
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