Varying Lowpass Filter
Butterworth filter with varying coefficients
Control System Toolbox / Linear Parameter Varying
The block implements an analog Nth-order Butterworth filter with unit DC gain and varying cutoff frequency.
Use this block and the other blocks in the Linear Parameter Varying library to implement common control elements with variable parameters or coefficients. For more information, see Model Gain-Scheduled Control Systems in Simulink.
u — Filter input
Lowpass filter input signal.
freq — Cutoff frequency
Filter cutoff frequency, specified in rad/s.
y — Filter output
Lowpass filter output signal.
Filter order — Lowpass filter order
1 (default) | positive integer
Lowpass filter order, specified as a positive integer.