IMPLEMENTATION OF FEEDFORWARD AND PID CONTROL STRATEGIES ON CONTROL LOOP FIELDBUS FOUNDATION PROTOCOL

This report is intended to discuss the project undertaken to design, analyse and
fabricate a simple control loop using a fieldbus foundation protocol. The first control
systems used mechanical and pneumatic controllers and were designed merely to
achieve stability rather than economic performance. Later in the 1970s, distributed
control system (DCS) emerged to replace the conventional technology. In DCS, a
central processor controls all parameters however, it has limitation in term of
reliability, robustness and cost. This lead to the introduction of network
communication for industrial process known as the fieldbus system replacing the
DCS architecture by enabling distribution of control function to equipment in the
field such as sensors, controllers and actuators. In this project configuration and
implementation procedure for the development of fieldbus process loop is presented
involving three process variables that are the temperature, pressure and level together
with PID and feedforward control strategies. The methodology towards
accomplishing the project includes the theoretical and technical research, the
installation and commissioning, the configuration network of fieldbus protocol
together with HART protocol, the troubleshooting, operation and maintenance, and
the analysis of the fieldbus advantages and benefits. The findings demonstrates the
benefits of the fieldbus system in term of cost saving, data quality and quantity,
simpler and better controllability.