Zero-order hold sampling

1. What is sample and zero-order hold circuit?
2. What is the purpose of a zero-order hold?
3. Is zero-order hold is used with sample data system to?
4. What is ZOH and FOH?

What is sample and zero-order hold circuit?

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 purpose of a zero-order hold?

A zero-order hold (ZOH) reconstructs a piece-wise constant signal from a number sequence and represents a model of the digital-to-analog converter (DAC). The output of the ZOH to an arbitrary input, r(kT), is a staircase reconstruction of the analog signal, r(t).

Is zero-order hold is used with sample data system to?

Explanation: Zero-order hold is used to reconstruct the continuous-time signal which is represented as a weighted sum of rectangular pulses shifted by integer multiples of the sampling interval.

What is ZOH and FOH?

In large sampling period nonlinear systems, the Taylor series method was used to improve the performance of the controller. First-order hold (FOH) and zero-order hold (ZOH) are used respectively in the discretization of input time-delay systems. The sampled-data representation of FOH and ZOH are both described.