Generalised Hold Devices
The zeros of the sampled model depend on the artifacts of the sampling process, namely, how the continuous-time input is generated by a hold device and how the output samples are obtained. In this chapter, the effect of the hold device is studied in a more general setting. In particular, hold devices are characterized by their impulse response. In this framework, zero- and first-order holds are particular cases of these generalized hold functions.
Further results on using generalised hold functions can be found in
- Arriagada I, Yuz JI (2008) On the relationship between splines, sampling zeros and numerical integration in sampled-data models for linear systems. In: American control conference, ACC 2008, Seattle, WA, USA Google Scholar
- Yuz JI, Goodwin GC, Garnier H (2004) Generalised hold functions for fast sampling rates. In: 43rd IEEE conference on decision and control, Nassau, Bahamas Google Scholar
- Zhang J, Zhang C (1994) Robustness analysis of control systems using generalized sample hold functions. In: 33th IEEE conference on decision and control, Lake Buena, Vista, FL, USA Google Scholar