Mitsuaki Ishitobi

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This paper is concerned with the stability of zeros of the discrete-time mul-tivariable system composed of a generalized sample hold function (GSHF), a continuous-time plant with the degrees of infinite elementary divisors being two or three, i.e., µ 1 = · · · = µ m−k = 2 and µ m−k+1 = · · · = µ m = 3 (k = 1,. .. , m, 0 ≤ k ≤ m − 1), and a sampler in(More)
In this paper, a motion planning method for mobile auditory robots is proposed based on an optimization technique. Since it is one of the most important abilities for auditory robots to recognize vocal messages correctly, the proposed method is designed to maximize the confidence measure of a speech recognition since the measure is thought to be strongly(More)
Unstable zeros limit the achievable control performance. When a continuous-time system is discretized using the zero-order hold, there is no simple relation which shows how the zeros of the continuous-time system are transformed by sampling. This paper analyzes the asymptotic behavior of the limiting zeros for multivariable systems and derives a new(More)