We evaluate the performance of two control architectures applied to atomic force microscopes (AFM). Feedback-only control is a natural solution and has been applied widely. Expanding on that, combining feedback controllers with plant-injection feedforward filters has been shown to greatly improve tracking performance in AFMs. Alternatively, performance can also be improved by the use of a close...

We evaluate the performance of two control architectures applied to atomic force microscopes (AFM). Feedback-only control is a natural solution and has been applied widely. Expanding on that, combining feedback controllers with plant-injection feedforward filters has been shown to greatly improve tracking performance in AFMs. Alternatively, performance can also be improved by the use of a close...

Left ventricular (LV) pressure and myocardial segment length, determined by an epicardial mercury-in-silastic length gauge, were plotted simultaneously to obtain a pressure-length loop before and after left anterior descending artery (LAD) occlusion in 11 dogs. Previous studies have indicated that the area within this loop is a sensitive and reproducible means of quantitating regional myocardia...

This paper presents a method for designing the control loop for dc-to-dc converters when uncertainties exist in the ac characteristics of the converter’s load. In the proposed method, a converter is initially considered as a stand-alone module feeding a current sink load and the control loop of the converter is then designed in a way that maximizes the robustness of the converter’s closed-loop ...

this paper focuses on the effects of closed- control on the calculation of the dynamic load carrying capacity (dlcc) for mobile-base flexible-link manipulators. in previously proposed methods in the literature of dlcc calculation in flexible robots, an open-loop control scheme is assumed, whereas in reality, robot control is achieved via closed loop approaches which could render the calculated ...

Abstract: A closed loop control of the fourth order (LCLC configuration) resonant converter has been simulated and presented in this paper. The PI controller has been used for closed loop operation and the performance of proposed converter has been estimated with the closed loop and the open loop condition. The steady state-transient responses of nominal load, sudden line and load disturbances ...

Desktop workloads are expected to shift over the next few years to become increasingly media-centric. These multimedia applications require much larger computational demands than current desktop processors can provide. In this paper, we describe four major requirements that we believe any eeective desktop processor should address: it should meet the performance requirements of desktop workloads...

Spatio-temporal resolution pyramids are well suited for scalable video codecs. An oversampled pyramid decomposition can be incorporated eeciently into either open-loop or closed-loop pyramid encoders. In this paper, we discuss two diierent motion compensation (MC) techniques suitable for open-loop as well as for closed-loop pyramid coders. We compare the performance of each technique to both py...