KEYWORDS: Actuators, Sensors, Space operations, Data modeling, Electronics, Control systems, Passive isolation, Active isolation, Calcium, Optical isolators
Passive mechanical isolation is often times the first step taken to remedy vibration issues on-board a spacecraft. In many
cases, this is done with a hexapod of axial members or struts to obtain the desired passive isolation in all six degrees-of-freedom
(DOF). In some instances, where the disturbance sources are excessive or the payload is particularly sensitive
to vibration, additional steps are taken to improve the performance beyond that of passive isolation. Additional
performance or functionality can be obtained with the addition of active control, using a hexapod of hybrid
(passive/active) elements at the interface between the payload and the bus. This paper describes Honeywell's Isolation,
Pointing, and Suppression (IPS) system. It is a hybrid isolation system designed to isolate a sensitive spacecraft payload
with very low passive resonant break frequencies while affording agile independent payload pointing, on-board payload
disturbance rejection, and active isolation augmentation. This system is an extension of the work done on Honeywell's
previous Vibration Isolation, Steering, and Suppression (VISS) flight experiment. Besides being designed for a different
size payload than VISS, the IPS strut includes a dual-stage voice coil design for improved dynamic range as well as
improved low-noise drive electronics. In addition, the IPS struts include integral load cells, gap sensors, and payloadside
accelerometers for control and telemetry purposes. The associated system-level control architecture to accomplish
these tasks is also new for this program as compared to VISS. A summary of the IPS system, including analysis and
hardware design, build, and single axis bipod testing will be reviewed.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.