Authorised by Academic Registrar, April 1996
Objectives Functions of computers in process system control, the relationship between continuous time systems and discrete time systems, and the structure of computer controllers used in commercial applications.
Synopsis Process concepts: basic process elements, plant, measurements, controller. Control loop topologies. Control hierarchies: direct digital control, supervisory control, distributed control configurations, batch sequencing, process interface. Modeling and identification: development of first and second-order models. Sampled data theory: z plane, stability, transforms, closed loop sampled systems. DDC algorithms and tuning, digital filters - deadbeat, Dahlin PID controllers. Selection of sampling interval. Multiloop control schemes, feedforward, cascade, interacting loops and decoupling.
Assessment Examination (3 hours): 60% + Laboratory work: 40%