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How do you Discretize a signal?
The analogue signal time-discretization is made by sampling the signal in equal time intervals. These samples have continuous-amplitudes. The amplitude discretization is made by the approximation of these samples to a discrete number of levels, in an operation called quantising.
How do you convert a discrete signal to continuous?
The answer is basically the sampling theory: you need to sample (uniformly) twice of the highest frequency of your analog signal, so you can reconstruct the original continuous time signal precisely by passing the sampled signals (the discrete time signals) through a low pass filter with high enough cut off frequency ( …
What is the function of zero-order hold?
The zero-order hold (ZOH) is a mathematical model of the practical signal reconstruction done by a conventional digital-to-analog converter (DAC). That is, it describes the effect of converting a discrete-time signal to a continuous-time signal by holding each sample value for one sample interval.
What is the continuous-time signal?
Basic Definitions. A continuous-time (CT) signal is a function, s(t), that is defined for all time t contained in some interval on the real line. For historical reasons, CT signals are often called analog signals.
How is a discrete time signal different from a continuous time signal?
Discrete-time signal. A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities. Unlike a continuous-time signal, a discrete-time signal is not a function of a continuous argument; however, it may have been obtained by sampling from a continuous-time signal.
How to discretize a continuous time control system?
Discretization of Continuous Controllers One way to design a computer-controlled control system is to make acontinuous-time design and then make a discrete-time approximationof this controller)Analog Design Digital ImplementationThe computer-controlled system should now behave as the continuous-time system
Which is an example of a continuous signal?
This (a signal) will have some value at every instant of time. The electrical signals derived in proportion with the physical quantities such as temperature, pressure, sound etc. are generally continuous signals. Other examples of continuous signals are sine wave, cosine wave, triangular wave etc.
How are measurements made in a discrete time series?
Measurements are typically made at sequential integer values of the variable “time”. A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.