Simulink integrator block initial conditions

Hi, How does one specify initial conditions in simulink integrator block for times not t= 0 for example, y(3) =5;

Answer 1

[Fangjun Jiang]

utilize the "External reset" (set as rising) and "Initial ocndition source" (set as external).

Compare clock with t=3 and make it as the "External reset" signal.

[Raghuraman S]

Thanks, very helpful.

[Wang Tao]

Could you give the details of how to "Compare clock with t=3 and make it as the "External reset" signal."

What does "compare clock" mean, and I linked the clock to the "External reset" and the answer has no chage.

A picture on how to set them will be be grateful. Many thanks

[Fangjun Jiang]

Compare Clock with Constant block (value is 3) using the Relational Operator block, the output is trur or false.

[Wang Tao]

Thanks for the prompt reply! I can get the answer for the time after t=3 with the y(3)=5 now. But the problem is for the time earilier than 3 as t<3, is not correct.

I am handling some two point boundary value problem, which y(3)=5 is the end/ final condition. Is there any way to solve this.

It seems can change the initial setting of integrator through properties, but there are no final condition settings.