Null controllable region of LTI discrete-time systems with input saturation |
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Authors: | Tingshu Hu Daniel E Miller |
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Affiliation: | a Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA 22903, USA b Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, Ont., Canada N2L 3G1 c Department of Electrical and Electronic Engineering, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China |
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Abstract: | We present a formula for the extremes of the null controllable region of a general LTI discrete-time system with bounded inputs. For an nth order system with only real poles (not necessarily distinct), the formula is simplified to an elementary matrix function, which in turn shows that the set of the extremes coincides with a set of trajectories of the time-reversed system under bang-bang controls with n−2 or less switches. |
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Keywords: | Actuator saturation Null controllable region Discrete-time system |
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