Active isolation systems

This paper summarizes microgravity experiments for space platforms and presents test results of a three-axes active isolation demonstration system that has been built and tested. This mount has demonstrated isolation capability down to 0.05 Hz nd a transmissibility curve which provides isolation levels necessary for microgravity and precision pointing aboard space platforms. The system has high-bandwidth inertial servo loops using accelerometers for active disturbance rejection to isolate the payload from external torque disturbances by the utility transfer devices and moving mechanisms.