Significant risks and risk management:
Risk: The analog circuit as described by Sergey’s Thesis cannot be realized.
Definition: Through some more research and implementing his circuits through simulation, we were able to determine that the constraint primitives are not able to be realized for our optimization problem. Specifically, for the equality constraint, the theoretical formulation assumed infinite op amp rail voltages and the quadratic costs could not properly be realized without first solving a linear programming problem.
Severity: The severity is very high. If this is not able to be resolved, our circuit will fail to converge.
Resolution: We were able to resolve both of these issues. For the inequality, we reduced the operating voltage by 10x, so that the maximum voltage that we expect is within the rails of the op amp. As for the costs, we realized that we could not implement these quadratic costs for SQP without first solving a SLP (sequential linear programming), so we decided to compromise and solve our optimization problems using an SLP, using linear costs
Current progress:
We have resolved the issues regarding the constraints
Changes to the existing design:
We have modified our problem formulation from SQP to SLP, modified the constraints to account for op amp rail voltages, and slightly descoped the optimization problem.
Changes to the project schedule:
Similarly, there are no significant changes to the project schedule, we are a bit behind schedule with pcb ordering though.