First- and Second-Order Transfer Functions
First- and Second-Order Transfer Functions
This Demonstration plots the time-domain response of a system with a step input of unity. Select either a first-order plus dead time (FOPDT) model or a second-order plus dead time (SOPDT) model. Set the time constant to change how quickly the system reaches a new steady state, the process gain to change how aggressively the system responds to the unity step input and the dead time that delays the system response by a value of . For the second-order process, change the damping coefficient with a slider. The damping coefficient is a measure of the magnitude of damping, which affects the degree of oscillation in the response. Dimensionless time is used.
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