Zero dynamics of sampled nonlinear systems
Systems & Control Letters
Optimal hold functions for sampled data regulation
Automatica (Journal of IFAC)
Exact model matching of linear systems using generalized sampled-data hold functions
Automatica (Journal of IFAC)
Non-pathological sampling for generalized sampled-data hold functions
Automatica (Journal of IFAC)
Computer-controlled systems (3rd ed.)
Computer-controlled systems (3rd ed.)
Structural modification of systems using discretization and generalized sampled-data hold functions
Automatica (Journal of IFAC)
Paper: Zeros of sampled systems
Automatica (Journal of IFAC)
| Hi-index | 22.14 |
We present a generalized sampled-data hold function that combines arbitrary z-domain zero-placement ability with zero-order hold behavior under constant input, thus exhibiting minimal intersample ripple by design. Our hold can be regarded as a generalization of the fractional-order hold, with a polynomial instead of a simple linear pattern, and therefore with as many tuning parameters as desired. Moreover, the polynomial approach turns out to provide a simple mechanism of control energy minimization. Among other benefits, all these features help to achieve qualitatively better perfect model referencing, because problematic sampling z-zeros or the intersample issues of the conventional generalized holds need no longer be endured.