Analysis and Design Modification of an Airborne Mirror Alignment System.
Abstract
This study deals with an electronic control system modification to solve a torque limitation problem in the Airborne Dynamic Alignment System aboard the Airborne Laser Lab. This control system is reduced in complexity and modeled in the frequency and state space domains. Closed loop system response over a desired frequency range is obtained from the frequency domain model. Stability data is calculated through eigenvalue analysis of the state space model. A low pass filter is introduced to decrease the demand on the torque saturated motor. The main result of this modification is that the filter does not appreciably alter the closed loop response. This is due to the fact that the cutoff frequency of the filter must be extremely high to keep the modified system stable. It is concluded that the complimentary filter does not solve the torque saturation problem. A recommendation is made that further analysis be concentrated in the time domain through modern state space techniques and the design approach to an optimal controller is presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1978
- Accession Number
- ADA056093
Entities
People
- Patrick D. Nutz
Organizations
- Air Force Institute of Technology