Adaptive control system for pipeline valve pneumatic actuator

The paper deals with development of advanced control system for pipeline valve. Control valve device with pneumatic actuator as well as examination of its operation principles are described. The concept of smart control device to provide automatic setting of control law parameters according to each specific actuator and control valve is suggested. Control system to be designed is able to adapt control law parameters during operation to compensate influence of changing operation conditions. Control system is supposed to have wide capabilities to estimate conditions of system units and aggregates as well as to monitor operation mode of device. Diagnostic system will allow detecting possibility of abnormal situations in advance, defining possible reason of failure and suggesting ways of failure correction. Control system for existing pneumatic positioner of EPP300 type produced by ZAO ROOST-95 (Russian Federation) is described and its experimental characteristics are presented.