A New Control Technique for Cross Machine Control of Basis Weight

Abstract Recent advances in automatic control theory have led to the development of self tuning regulators - regulators which adapt to the process they are controlling to produce the best control. One of the most interesting applications of self tuning regulators has been in the field of cross machine basis weight control on a paper machine. Process control systems which perform cross machine basis weight control using self tuning regulation techniques are now in routine use both in Western Europe and North America. This paper covers the following topics in relation to the cross machine control of basis weight using self tuning regulator techniques 1. The operating principles used in the control system. 2. A review of the actuators currently in use or under development for moving the paper machine slice lip. 3. Results from operating systems