How to compensate the phase error introduced by a low pass filter?

[powersys]

The first figure below shows the MATLAB/Simulink model of a low-pass filter (LPF). The cut-off frequency of the LPF is fc=10Hz. The sinewave frequency is fe=2Hz. As shown in the 2nd figure below, the LPF introduces a phase error at fe=2Hz, resulting in a filtered sinewave with phase error (see 3rd figure below).

Is there a method to compensate the phase error (which is applicable in Simulink or a microcontroller based application)?

Thanks.

 

[barry]

You can follow your LPF with an all-pass filter (or some other phase-compensating network) to adjust the phase.

 

[godfreyl]

You can add more phase shift with an all-pass filter, but you can't remove the phase shift added by the low-pass filter.

 

[barry]

You can add more phase shift with an all-pass filter, but you can't remove the phase shift added by the low-pass filter.

Of course. If your requirement is to have the input->output phase=0 (or. really, 360) then you can do it. Otherwise you need a time machine.

 

[LvW]

Powersys,

are you really sure that your application requires to compensate this phase "error" ?
By the wy, I wouldn´t call it "error" because it is a natural physical phenomenon, see Bode`s fundamental formula for the gain-phase relationship.