On adaptive modal control of large flexible spacecraftA recently developed strategy for adaptive sampled-data control of distributed parameter systems based on a plant modal expansion description and modal simultaneous identification and regulation algorithms is presented with frequent reference to the annular momentum control device (AMCD) test example. The requirements of observation spillover reduction and modal eigenvector shape prespecification, which are especially crucial to the proposed adaptive control strategy, are addressed. Individual low pass time filtering of sensed AMCD particle displacements is proposed for observation spillover reduction. A layered scheme incorporating 'eigenvector' shape improvement is outlined to combat the expansion basis prespecification requirement.
Document ID
19790061393
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Johnson, C. R., Jr. (Virginia Polytechnic Institute and State University Blacksburg, Va., United States)