Delay equalizer

Figure Al.6.22 (a) Sequence of pulses in the canonical echo experiment, (b) Polarization versus time for the pulse sequence in (a), showing an echo at a time delay equal to the delay between the excitation pulses.

A delay equal to the acoustic time lag r=r/co is also included to account for wave propagation over the distance r between the flame and the microphone M. The resulting signal is then scaled to get a signal dCHVdf(f) with the same amplitude as the pressure fluctuation p (f+x). Owing to the combustion... 

Fig. 1. Demonstration of the phase control of femtosecond chirped pulses. Solid lines spectral phase of the diffracted pulse for two delays X and -X between the writing pulses. Thin dotted lines spectral phase difference between the 2 writing pulses for the two cases x and -X. The thin dashed line represents the spectral amplitude of the diffracted pulse. Insert spectral interference fringes between the unchirped and chirped writing pulses at time delay equal 0 at 800nm. The chirp is formed by propagation through a SF58 glass plate of thickness 1.7 cm.

The effect of controller sampling time is not as bad as the effect of an increased delay in the system and can if necessary (sampling interval greater than about 2 s) be approximated by a delay equal to the sampling interval. This avoids the introduction of frequent discontinuities in the control trajectory. 

Equation (22.35) may be implemented in a simulation by a delay function, incorporating a pure time delay equal to the controller timestep, Xc. ... 

The images appear almost immediately after irradiation, with a delay equal to 100 nsec, and no developing or fixation processes are necessary. The control of the data is possible during or... 

There are a number of approaches to generate suitable template multiplets, the simplest of which is to take these from a ID proton spectrum recorded with a delay equal to Alr immediately after the excitation pulse (Fig. 6.44a) so as to precisely simulate the phase evolution occurring in the corresponding HMBC delay. Experimentally, this can in fact be achieved by simply collecting a standard proton acquisition and removing the first part of the FID equivalent to Alr by left-shifting the FID data points. Figure 6.44b shows an optimised... 

FIGURE 13.104 A bandpass-filter balanced combiner with a group delay equalizer. 

FIGURE 13.105 Group delay for a bandpass filter module with a group delay equalizer. Copyright 2005 by Taylor Francis Group... 

Delay equalizer A network that adjusts the velocity of propagation of the frequency components of a complex signal to counteract the delay distortion characteristics of a transmission channel. 

A wavelet model for the data consisted of the following regressors i, y/ 2> y, 3, and yt 4, plus for each of the inputs the terms between rtk+X and 11 + 5. The total time delay was assumed to be one for the process between the i and hi and two between the and hi. Note that the time delay used here must include the one-sample time delay introduced by sampling a system, that is, the total time delay equals The estimated model parameters will not be included here as they are... 

The all-pass filter is also called a delay equalizer or phase corrector that passes aU frequencies of the signal without attenuation but introduces a phase shift. With Rp = Ri,... 

Compare the closed-loop performance of a discrete PI controller using the ITAE (disturbance) tuning rules in Table 12.3. Ajpproximate the sampler and ZOH by a time delay equal to Ar/2. Use Simulink to check the effect of samphng period for different controllers, with Af = 0.05, 0.25,0.5, and 1.0 min. 

If the valve is opened by some amount, increasing the material on the belt, there will be a delay equal to minutes before the increased weight is sensed at the weight sensor/transmitter. 

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