BMC – control stratergy

Control stratergy
|—-> Continuous control —–>P,I,D Control
|–>composite control
|                 |—> PI, PD,PID
|–>Optimality –> MPC(model predictive control),  LQG (linear quadratic gaussian control)

The point which lie on the pareto optimal curve are the points which are most optimal.

CLTF(closed loop transfer function):- Gc*Gp/(1+Gc*Gp*H)

OLTF(open loop transfer function):- Gc*Gp*H

The roots of the eqn in the numerator of a transfer function are called the zeros.

The roots of the eqn in the denominator of a transfer function are called the poles.

Total no of poles in a system is known as the order of the system.

Total no of poles lying at the origin determines the type of system. For eg:- if 2 poles value turns out to be zero, then its called a type-2 system.

Poles on the left side of the complex line can only be removed while on the right cant be because it makes the system unstable.

If any zero lies on the right side of the S-plane it is called non-minimum phase system.

If any pole lies on the right side of the S-plane then it is called unstable system.

Stability:- bounded i/p –> bounded o/p –> stable

Bounded i/p –> unbounded o/p –> not stable

unbounded i/p –> SP –> cant say ( cant comment on stability)