TY - JOUR
T1 - Design of attitude and rate command systems for helicopters using eigenstructure assignment
AU - Garrard, William L.
AU - Low, Eicher
AU - Prouty, Scott
N1 - Funding Information:
This research was supported by the Army Research Office under Contract DAAL03-86-K-0056.
PY - 1989
Y1 - 1989
N2 - This paper describes the use of eigenstructure assignment in the direct design of attitude and attitude rate command systems for helicopter flight control. Eigenvalue assignment is used to achieve desired bandwidth based on the handling qualities specifications, and eigenvector assignment is used to achieve decoupling of lateral, longitudinal, heave, and yaw modes and the desired command-response characteristics. Eigenstructure techniques are also used to design a state estimator that gives desired closed-loop frequency response. The stability robustness of the control system is evaluated with respect to an error model that includes rotor, actuator, flexure, and sensor dynamics and computational and sampling delays in the flight control system. The controlled helicopter is shown to exhibit both good frequency and time-response characteristics.
AB - This paper describes the use of eigenstructure assignment in the direct design of attitude and attitude rate command systems for helicopter flight control. Eigenvalue assignment is used to achieve desired bandwidth based on the handling qualities specifications, and eigenvector assignment is used to achieve decoupling of lateral, longitudinal, heave, and yaw modes and the desired command-response characteristics. Eigenstructure techniques are also used to design a state estimator that gives desired closed-loop frequency response. The stability robustness of the control system is evaluated with respect to an error model that includes rotor, actuator, flexure, and sensor dynamics and computational and sampling delays in the flight control system. The controlled helicopter is shown to exhibit both good frequency and time-response characteristics.
UR - http://www.scopus.com/inward/record.url?scp=0024767548&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024767548&partnerID=8YFLogxK
U2 - 10.2514/3.20482
DO - 10.2514/3.20482
M3 - Article
AN - SCOPUS:0024767548
SN - 0731-5090
VL - 12
SP - 783
EP - 791
JO - Journal of Guidance, Control, and Dynamics
JF - Journal of Guidance, Control, and Dynamics
IS - 6
ER -