Batch LCAP2-Linear Control Analysis, Version 2.0: User's Manual
Abstract
Batch LCAP2 (Linear Controls Analysis Program) is a FORTRAN program which provides the controls analyst with a set of easy to use FORTRAN subroutines which implements classical SISO control analysis techniques such as transfer function evaluation, transfer function algebra, frequency response, root locus, inverse time response, and sampled-data transforms. It can handle continuous systems and continuous- and continuous discrete multirate systems with the use of s, z, and w transforms. Recent additions to LCAP2 include (1) the capability for connecting transfer function blocks for both continuous and continuous-discrete multirate systems and (2) a precompiler to aid the user in writing FORTRAN code. The methodology used for connecting transfer function blocks takes into consideration the dimensionality problem associated with the use of nondynamic blocks or algebraic variables used in modeling the connection of dynamic blocks. In the formulation of the system matrix used in LCAP2, the dimension of the system matrix is not increased by the use of nondynamic blocks. The automated analysis of continuous-discrete multirate systems modeled by a connection of transfer function blocks uses the Kalman-Bertram state space method. It is the primary frequency domain analysis program used for stability verification of launch vehicles.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1989
- Accession Number
- ADA211670
Entities
People
- Eugene A. Lee
Organizations
- The Aerospace Corporation