tailieunhanh - Aerospace Technologies Advancements Fig Part 5

Tham khảo tài liệu 'aerospace technologies advancements fig part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 128 Aerospace Technologies Advancements epsilon 0 0 epsilon 1 epsilon 1 Fig. 4. Closed-loop poles of Ex. 1. where stability is not inherited during evolution in many cases it would be advantageous to augment the controller on only one component to restore stability to the entire Evolving System thereby leaving the other components and their controllers unmodified. Furthermore it is desirable for the augmented controller to only use the input-output ports on the component on which it resides. In this section we introduce the idea of key component controllers that restore stability to an Evolving System by augmenting the controller on a single subsystem component using only the input-output ports on that component. The key component controller using fixed gains was first proposed in Frost Balas 2007b . In the key component controller design approach one key component is chosen from the Evolving System to have additional local control added to it with the objective of maintaining system stability during the entire evolution of the system. The control and sensing of the other subsystem components will be unaltered and remain local. The key component controller operates solely through a single set of input and output ports on the key component see fig. 5. For components that lose stability when assembling the individual components could mate with the key component one at a time. The key component would compensate for any component which caused instability thereby restoring stability to the system. Fig. 5. Block diagram of key component controller and Evolving System. Evolving Systems and Adaptive Key Component Control 129 A clear advantage of the key component design approach is that components can be reused in many different configurations of Evolving Systems without needing redesign from a stability point of view. Redesign of existing components is unnecessary because the key component will be responsible for maintaining overall system stability. The reuse of .