This paper is concerned with vehicle speed control for chassis dynamometer testing by an automatic driving system. It proposes a new method to achieve different driving styles characterized by the Root Mean Square of Speed Error (RMSSE) and Inertia Working Ratio (IWR) specified by the users. The proposed method uses the reference shaping with parameters automatically adjusted to achieve required RMSSE and IWR. Its effectiveness is demonstrated in both of simulations and actual experiments.

Manufacturers have been trying to reduce reworks in product development. However, the reworks are increasing recently, because of the complexity growth in order to satisfy higher demands. Noise and Vibration (NV) are typical problems causing the reworks, because an effective system design method for NV does not exist, although NV phenomena are generated from widely distributed causes in the system. This paper introduces an effective frequency domain modeling method for NV in system design. An example for an automotive vehicle demonstrates the characteristics and the effectiveness of the method.

Fixed-time control is a control method that guarantees convergence rate for any initial states within a fixed constant time. To design a fixed-time control law based on a control Lyapunov function (CLF), we need to design a homogeneous CLF in bi-limit: homogeneous at the origin and infinity. In this paper, we propose a fixed-time control method using homogeneous locally semiconcave CLF in bi-limit for nonlinear control system. The effectiveness of the proposed method is confirmed by computer simulation.

In this paper, we propose virtual distributed observers which are built by virtually excluding some redundant sensors from conventional distributed observers. By using these observers, we can construct not only robust estimators against sensor attacks but detectors of attacks by malicious agents. We also consider the new framework of estimation problem which is more useful to adapt under distributed conditions. This relaxed problem makes it possible to estimate partial state under sensor attacks even if the whole observer system is not detectable. Finally, we confirm the effectiveness of our proposed method through numerical simulations.

This paper presents a galvano-scanner based axis alignment control for free-space optical systems coupling two single-mode optical fibers through the air. A sequential scanning process for initial beam acquisition is also introduced and discussed in experiments.