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In this paper, we address a motion synchronization problem in SE(3) and present a novel passivity based visual feedback system. Though a passivity based control law to achieve synchronization has already been presented in one of our previous works, we have not mentioned how to get information necessary to implement the law (that is, relative positions and orientations of neighbors) yet. The main focus...
This paper describes the effect of grounding pads on power bus resonance characteristics in multilayer printed circuit boards (PCBs). The resonance characteristics of a four-layer PCB with and without grounding pads are investigated by full-wave simulation. The results show that the presence of the grounding pads shifts the resonant frequencies significantly lower. The grounding pads can be modeled...
The model checking of higher-order recursion schemes has important applications in the verification of higher-order programs. Ong has previously shown that the modal mu-calculus model checking of trees generated by order-n recursion scheme is n-EXPTIME complete, but his algorithm and its correctness proof were rather complex. We give an alternative, type-based verification method: Given a modal mu-calculus...
Ultrasonic motor (USM) causes serious characteristic changes during operation and contains non-linearity caused by frictions. To compensate the characteristics, the internal model control - proportional integral differential (IMC-PID) control which requires only one parameter setting beforehand is widely applied to the control of ultrasonic motor. However, there are limitations of control performance...
In this paper, a limiting property of full information Hinfin control is discussed. Existence of a stabilizing solution to the control problem is shown, and limiting behaviors, i.e., disturbance attenuation property and decoupling property, of the closed-loop system are proposed. Moreover, the relationship with limiting properties of LQ control is also mentioned. To confirm effectiveness of the proposed...
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