Predictive Kalman filters can be used to predict positions of a mouse when it is operated under some basic assumptions. This prediction can be used to estimate what portions of a larger image an operator wants to view. This paper discusses theory and experimentation being done at the University of Alberta using predictive Kalman filters to provide predictive windows for low bandwidth telepresen...

We implemented all-fiber delay line using linearly chirped fiber Bragg gratings (CFBG), which can be applicable for reflectometry or optical coherence tomography (OCT). Compared with the previously reported delay lines, the proposed fiber-based optical delay line has in principle novel advantages such as automatic dispersion cancellations without additional treatment and a gain in optical delay...

A delay compensation algorithm is developed for optical array receivers. This algorithm is designed to compensate for slowly varying delays due to turbulence and to combine the delay-compensated signals from all elements of the array. First, algorithm performance is evaluated through the use of simulated data. Next, the algorithm is used on experimental data, and it is shown that significant ga...

This paper considers the identification and fuzzy controller design for nonlinear uncertain systems in presence of unknown input time-delay. Firstly, a time-delay Takagi-Sugeno-Kang (TSK) type fuzzy neural system (TDFN) is proposed to identify a class of nonlinear input time-delay systems. The input-output signals of nonlinear systems are used to identify the system dynamics and unknown time-de...

where Cij = 1 1+λ ( uiujβ lilj √ α ), C ′ ij = 1 (1+λ)α(lilj) , and the model converges to the optimal model, then the MSE of λG(wt) is smaller than the MSE of G(wt) in approximating Hessian H(wt). Proof: For simplicity, we abbreviate E(Y |x,w∗) as E, Gt as G(wt) and Ht as H(wt). First, we calculate the MSE of Gt, λGt to approximate Ht for each element of Gt. We denote the element in the i-th r...

ELECT A novel implementation is proposed to relax the specifications of the internal feedback path for a continuous-time delta–sigma modulator. A truncator is embedded into the digital excess loop delay (ELD) compensation path. Thermometer-coded truncation is achieved by reordering the reference voltages of the internal quantiser. This requires only a small amount of extra digital circuitry com...

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This paper addresses synchronization control and the associated practical issues for the class of interconnected systems with time delay. We consider uncertainty in the plant model as a disturbance, and to cope with it, a disturbance compensation scheme – the socalled disturbance observer – is presented. We examine the performance of the compensation scheme and its effect to overall stability. ...

This paper presents a motion compensation algorithm which is capable of dealing with large motion errors for highly squinted spotlight SAR. The approach consists of a phase error compensation, a shift to correct the delay time error and an interpolation/resampling in azimuth. For pulsed SAR with a 30° squint angle, the proposed algorithm compensates motion errors that are 10 times greater than ...

The problem of unknown input estimation and compensation is studied for actuated nonlinear systems with noisy measurements. The proposed solution is based on high order sliding-mode differentiation and discretetime optimization technique. Accuracy of the proposed hybrid estimation scheme is evaluated and stability of the compensating mechanism is established. It is shown that the fault detectio...