This paper proposes an adaptive wireless-network-induced delay compensation technique for Wireless Sensor and Actuator Network (WSAN). It is well known that network delays and packet losses over wireless network incur a great challenge over performance as well as stability of WSAN-based control systems. This paper presents a time-varying delay compensator exploiting Adaptive Smith Predictor wit...

In the context of Networked Control Systems (NCS), communication time delays strongly influence on the Quality of Control (QoC) of process control applications. The goal of this paper is to propose a way to calculate the closed-loop communication time delay and we compensate this time delay using the pole placement design method in order to improve the QoC for CAN-based NCSs. We consider severa...

The equalizer tap length requirement is investigated analytically and numerically for differential modal group delay (DMGD) compensated fiber link with weakly random mode coupling. Each span of the DMGD compensated link comprises multiple pairs of fibers which have opposite signs of DMGD. The result reveals that under weak random mode coupling, the required tap length of the equalizer is propor...

Delay in the nervous system is a serious issue for an organism that needs to act in realtime. For example, in the macaque, the mean latency (from stimulus onset) in spike arrival in the prefrontal cortex can be near 130 ms [1], thus putting the internal clock steadily behind the environmental clock. Such a lag can be critical when we consider that many animals need to deal with objects moving a...

In this paper, a new discontinuous control strategy is proposed for robust stabilization of a class of uncertain multivariable linear time-delay system with delays in both the state and control variables. The integral sliding mode control technique is applied to compensate the uncertainty term and then a predictor is used to obtain free-delay closed-loop system with desired spectra. For systems...

Superfund cleanup has been extremely slow. Traditional analysis has centered around reducing negotiation and litigation to expedite the cleanup process. We investigate other factors which provide possible incentives for delay, namely, discounting, risk aversion, and compensation for off-site damage. We find that liability share plays an essential role in PRPs’ incentives to delay. Commonly adop...

Compensation of delay and dynamic response of servo-hydraulic actuator is critical to the stability and accuracy of hybrid experimental and numerical simulations of the seismic response of structures. In this study, current procedures for compensation of actuator delay are examined and improved procedures are proposed. The proposed procedures need little or no a priori information about the beh...

The problem of robust fuzzy control for a class of nonlinear fuzzy impulsive singular perturbed systems with time-varying delay is investigated by employing Lyapunov functions. The nonlinear delay system is built based on the well-known T–S fuzzy model. The so-called parallel distributed compensation idea is employed to design the state feedback controller. Sufficient conditions for global expo...

We address the problem of group delay ripples in chirped fibre gratings on dispersion compensation in optical transmission systems. We show that the intersymbol interference, which is a highly harmful effect induced by the group delay ripples in transmission systems, can be substantially reduced by the use of nonlinear optical loop mirrors. This leads to an improvement of the system performance...