how do Boiler master control system achieved its control actions?
A boiler master control system is, basically, the steam header pressure control of one or more steam sources in parallel. To do this, a PID controller receives the steam header pressure signal and controls fuel and combustion air flow of the different sources. . .
do .. achieved is bad grammar. did ... achieve is good, past tense. do ... systems achieve is good, for present tense, plural. does ... system achieve is good, for present tense, singular. I don't know your particular system, but if it is not bang on, bang off based on a setpoint, then it is likely a PID (proportional integral differential) control system.
