44 citations · 89 across the 28 of their papers we have counts for
30 papers
Self-triggered Resilient Stabilization of Linear Systems with Quantized Output
Wenjie Liu, Masashi Wakaiki, Jian Sun +2
This paper studies the problem of stabilizing a self-triggered control system with quantized output. Employing a standard observer-based state feedback control law, a self-triggeri…
Decay of Operator Semigroups, Infinite-time Admissibility, and Related Resolvent Estimates
Masashi Wakaiki
We study decay rates for bounded -semigroups from the perspective of -infinite-time admissibility and related resolvent estimates. In the Hilbert space setting, polynomia…
Self-triggered Consensus of Multi-agent Systems with Quantized Relative State Measurements
Masashi Wakaiki
This paper addresses the consensus problem of first-order continuous-time multi-agent systems over undirected graphs. Each agent samples relative state measurements in a self-trigg…
Robustness of Polynomial Stability with Respect to Sampling
Masashi Wakaiki
We provide a partially affirmative answer to the following question on robustness of polynomial stability with respect to sampling: ``Suppose that a continuous-time state-feedback…
Decay Rate of on a Hilbert Space and the Crank-Nicolson Scheme with Smooth Initial Data
Masashi Wakaiki
This paper is concerned with the decay rate of for the generator of an exponentially stable -semigroup on a Hilbert space. To estimate the decay rate o…
Cell Zooming with Masked Data for Off-Grid Small Cell Networks: Distributed Optimization Approach
Masashi Wakaiki, Katsuya Suto, Izumi Masubuchi
Cell zooming has been becoming an essential enabler for off-grid small cell networks. Traditional models often utilize the numbers of active users in order to determine cell zoomin…
Semi-uniform Input-to-state Stability of Infinite-dimensional Systems
Masashi Wakaiki
We introduce the notions of semi-uniform input-to-state stability and its subclass, polynomial input-to-state stability, for infinite-dimensional systems. We establish a characteri…
Stability of Infinite-dimensional Sampled-data Systems with Unbounded Control Operators and Perturbations
Masashi Wakaiki
We analyze the robustness of the exponential stability of infinite-dimensional sampled-data systems with unbounded control operators. The unbounded perturbations we consider are th…
Self-triggered Stabilization of Discrete-time Linear Systems with Quantized State Measurements
Masashi Wakaiki
We study the self-triggered stabilization of discrete-time linear systems with quantized state measurements. In the networked control system we consider, sensors may be spatially d…
The Cayley transform of the generator of a polynomially stable -semigroup
Masashi Wakaiki
In this paper, we study the decay rate of the Cayley transform of the generator of a polynomially stable -semigroup. To estimate the decay rate of the Cayley transform, for po…
Strong Stability of Sampled-data Riesz-spectral Systems
Masashi Wakaiki
Suppose that a continuous-time linear infinite-dimensional system with a static state-feedback controller is strongly stable. We address the following question: If we convert the c…
Stability Analysis of Infinite-dimensional Event-triggered and Self-triggered Control Systems with Lipschitz Perturbations
Masashi Wakaiki, Hideki Sano
This paper addresses the following question: "Suppose that a state-feedback controller stabilizes an infinite-dimensional linear continuous-time system. If we choose the parameters…
Stability Analysis of Perturbed Infinite-dimensional Sampled-data Systems
Masashi Wakaiki, Yutaka Yamamoto
This paper addresses the stability analysis of infinite-dimensional sampled-data systems under unbounded perturbations. We present two classes of unbounded perturbations preserving…
Sampled-data Output Regulation of Unstable Well-posed Infinite-dimensional Systems with Constant Reference and Disturbance Signals
Masashi Wakaiki, Hideki Sano
We study the sample-data control problem of output tracking and disturbance rejection for unstable well-posed linear infinite-dimensional systems with constant reference and distur…
LQ-optimal Sample-data Control under Stochastic Delays: Gridding Approach for Stabilizability and Detectability
Masashi Wakaiki, Masaki Ogura, Joao P. Hespanha
We solve a linear quadratic optimal control problem for sampled-data systems with stochastic delays. The delays are stochastically determined by the last few delays. The proposed o…
An LMI Approach to Stability Analysis of Coupled Parabolic Systems
Masashi Wakaiki
We analyze the exponential stability of distributed parameter systems. The system we consider is described by a coupled parabolic partial differential equation with spatially varyi…
Event-triggered Control of Infinite-dimensional Systems
Masashi Wakaiki, Hideki Sano
This paper addresses the problem of event-triggered control for infinite-dimensional systems. We employ event-triggering mechanisms that compare the plant state and the error of th…
Stabilization of Networked Control Systems under DoS Attacks and Output Quantization
Masashi Wakaiki, Ahmet Cetinkaya, Hideaki Ishii
This paper addresses quantized output feedback stabilization under Denial-of-Service (DoS) attacks. First, assuming that the duration and frequency of DoS attacks are averagely bou…
Stability and -gain Analysis of Adaptive Control Systems with Event-triggered Try-once-discard Protocols
Masashi Wakaiki
This paper addresses the stability and -gain analysis of adaptive control systems with event-triggered try-once-discard protocols. At every sampling time, an event trigger…
Quantized output feedback stabilization by Luenberger observers
Masashi Wakaiki, Tadanao Zanma, Kang-Zhi Liu
We study a stabilization problem for systems with quantized output feedback. The state estimate from a Luenberger observer is used for control inputs and quantization centers. Firs…
Delayed Bet-Hedging Resilience Strategies Under Environmental Fluctuations
Masaki Ogura, Masashi Wakaiki, Harvey Rubin +1
Many biological populations, such as bacterial colonies, have developed through evolution a protection mechanism, called bet-hedging, to increase their probability of survival unde…
Supervisory Control of Discrete-event Systems under Attacks
Masashi Wakaiki, Paulo Tabuada, Joao P. Hespanha
We consider a multi-adversary version of the supervisory control problem for discrete-event systems, in which an adversary corrupts the observations available to the supervisor. Th…
Dynamic Analysis of Bet-Hedging Strategies as a Protection Mechanism against Environmental Fluctuations
Masaki Ogura, Masashi Wakaiki, Victor M. Preciado
In order to increase their robustness against environmental fluctuations, many biological populations have developed bet-hedging mechanisms in which the population `bets' against t…
Stabilization of systems with asynchronous sensors and controllers
Masashi Wakaiki, Kunihisa Okano, Joao P. Hespanha
We study the stabilization of networked control systems with asynchronous sensors and controllers. Offsets between the sensor and controller clocks are unknown and modeled as param…