yassin2705
Junior Member level 1
Hi,
I am trying to simulate the behaviour of a type 1 PLL using simulink, the loop parameters are:
Wlpf=2pi*(1 MHz);
Kvco=100M
Kpd=1
So the loop T.F. is T(s)=(Kvco*Kpd*Wlpf)/(S^2+Wlpf*S+Kvco*Kpd*Wlpf);
I am using three blocks:
1. input block which is a step source to simulate the input phase.
2. "Transfer function" block to act as the PLL loop.
3. Scope block to display the output.
After running the simulation for 5 sec, the output is not meaningful, I don't know if this is a problem of simulation accuracy or not.
So any hints??!
Thanks!
yassin
I am trying to simulate the behaviour of a type 1 PLL using simulink, the loop parameters are:
Wlpf=2pi*(1 MHz);
Kvco=100M
Kpd=1
So the loop T.F. is T(s)=(Kvco*Kpd*Wlpf)/(S^2+Wlpf*S+Kvco*Kpd*Wlpf);
I am using three blocks:
1. input block which is a step source to simulate the input phase.
2. "Transfer function" block to act as the PLL loop.
3. Scope block to display the output.
After running the simulation for 5 sec, the output is not meaningful, I don't know if this is a problem of simulation accuracy or not.
So any hints??!
Thanks!
yassin