A typical industrial process includes thousands of control loops. Instrumentation technicians generally maintain and service these loops, but rather infrequently. Routine maintenance of such loops at optimal settings can save a typical industrial complex hundreds of thousands of dollars a year. The development of quality measures of performance for such control loops in industrial settings is the subject matter of this book. This book ponders questions such as: Is your controller healthy? Is it doing its job well? How can one obtain a non-invasive or a model-free assessment of controller performance from routine closed-loop data? To answer these questions Performance Assessment of Control Loops considers:

Theoretical aspects of control loop performance assessment for

- Univariate and

- Multivariate loops

Evaluations of such assessment techniques via

- Simulations

- Experimental evaluations on computer-interfaced pilot scale processes

- Industrial applications