CONTROL PERFORMANCE ASSESSMENT FOR BUILDING AUTOMATION SYSTEMS

This paper focuses on the application area of building automation systems and highlights the need for methods to assess the performance of SISO feedback loops. Several practical issues make it difficult to apply some of the more widely known performance assessment methods to systems in buildings. These issues are discussed and an alternative method is described that is designed to be more practicable for the buildings application area. The method involves extracting features from the setpoint error signal and it yields a normalized index that can be used to detect and diagnose tuning problems as well as valve stiction. The paper describes the method and demonstrates its utility on several building control loops.