Abstract
This research established a set of fundametal theory with application examples for process-oriented functional analysis and trimming. An algorithic procedure to analyze process systems leading to systematic process diagnosis and trimming has been established. Specific tools used in the procedure include Operation Flow Chart, Functional Analysis for Process, Flow Analysis, Cause-effect-contradiction-chain Analysis, and Process Trimming. Sub-tools established include graphic functional model, a structured set of trimming rules based on analysis of component relationships, Trimming plan for process, and a recursive trimming procedure for processes. The contributions of this research include: 1) Establishing a systematic process analysis procedure and theory to identify process-oriented system problems and solve problem with process trimming; 2) Establising graphic function modeling for process trimming, a structured set of expanded trimming rules, and trimming plan to facilitate systematic trimming processes; 3) Integrating TRIZ and manufactuging process analysis tools for process trimming and problem solving by component and process reduction.