![]() Briefly discussed are the structure of data flow, the signal processing methods used to process the data, and the software developed to generate the transfer functions. Pototzky, Anthony Wieseman, Carol Hoadley, Sherwood Tiffany Mukhopadhyay, Vivekĭescribed here is the development and implementation of on-line, near real time controller performance evaluation (CPE) methods capability. The L(sub 1) multi-input multi-output adaptive control architecture is applied to the X-29 lateral/directional dynamics and results are evaluated against a similar single- input single- output design approach.ĭevelopment and testing of controller performance evaluation methodology for multi-input/multi-output digital control systems In addition, explicit use of high-fidelity actuator models are added to the L1 architecture to reduce uncertainties in the system. A piecewise continuous adaptive law is adopted and extended for applicability to multi-input multi-output systems that explicitly compensates for dynamic cross-coupling. This paper presents an L(sub 1) adaptive control augmentation system design for multi-input multi-output nonlinear systems in the presence of unmatched uncertainties which may exhibit significant cross-coupling effects. L1 Adaptive Control Augmentation System with Application to the X-29 Lateral/Directional Dynamics: A Multi-Input Multi-Output Approach The need for gain-scheduling is eliminated through the use of bandwidth-limited (low-pass) filtering in the control channel, which appropriately attenuates the high frequencies typically appearing in fast adaptation situations and preserves the robustness margins in the presence of fast adaptation. Systems and methods of adaptive control for uncertain nonlinear multi-input multi-output systems in the presence of significant unmatched uncertainty with assured performance are provided. Also applicable to other complex, highly dynamic digital controllers, such as those in high-performance robot systems.Īdaptive Control for Uncertain Nonlinear Multi-Input Multi-Output SystemsĬao, Chengyu (Inventor) Hovakimyan, Naira (Inventor) Xargay, Enric (Inventor) Methodology generic and used in many types of multi-loop digital-controller applications, including digital flight-control systems, digitally controlled spacecraft structures, and actively controlled wind-tunnel models. Procedures identify potentially destabilizing controllers and confirm satisfactory performance of stabilizing ones. Mukhopadhyay, VivekĬontroller-performance-evaluation (CPE) methodology for multi-input/multi-output (MIMO) digital control systems developed. Evaluating Multi-Input/Multi-Output Digital Control Systems
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