Elastic feedback control
Elastic feedback control
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弹性反馈控制
DOI:
10.1109/emrts.2000.853999
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
L. Sha
中科院分区:
文献类型:
--
作者:
M. Caccamo;G. Buttazzo;L. Sha
In many real time control applications, the task periods are typically fixed and worst case execution times are used in schedulability analysis. With the advancement of robotics, flexible visual sensing using cameras has become a popular alternative to the use of embedded sensors. Unfortunately, the execution time of visual tracking varies greatly. In such environments, control tasks have a normally short computation time but also an occasional long computation time; therefore, the use of worst case execution time is inefficient for controlling performance optimization. Nevertheless, to maintain the control stability, we still need to guarantee the task set, even if the worst case arises. We propose an integrated approach to control performance optimization and task scheduling for control applications where the execution time of each task can vary greatly. We create an innovative approach to elastic control that allows us to fully utilize the processor to optimize the control performance and yet guarantee the schedulability of all tasks under worst case conditions.