Abstract: Highprecision payloads require both ultraquiet and agility performances of satellite platform, which brings several design challenges. The gyroscopic precession induced by actuator isolation and its impact on the agility performance are investigated, and a parameter selection principle is proposed based on the estimation of the precession decay time. The noncollocated control problem caused by payload isolation is studied and a design principle is proposed based on damping constant isolation. Simulations show that both ultraquiet and agility performances can be ensured by using the proposed design method.

Key words: ultraquiet agile satellites, actuator vibration isolation, precession decay time, payload isolation, noncollocated control