COMPENSATION BASED ON LINEARIZED ANALYSIS FOR A SIX-DEGREE-OF-FREEDOM MOTION SIMULATOR

摘要

The inertial response characteristics of a synergistic, six-degree-of-freedom motion base are presented in terms of amplitude ratio and phase lag as functions of frequency data for the frequency range of interest (0 to 2 Hz) in real-time, digital, flight simulators. The notch filters which smooth the digital-drive signals to continuous-drive signals are presented, and appropriate compensation, based on the inertial response data, is suggested. The exist¬ence of an inverse transformation that converts actuator extensions into inertial positions makes it possible to gather the response data in the inertial axis system.