Investigation of Torque Output Variation in a Duo-Servo Park Brake System using Six Sigma Tools and FE-Analysis

This paper describes an investigation to find the root cause for the high torque output variation in a duo-servo park brake system. Six Sigma tools were used to analyze the available data and to set up a “Design of Experiments” (DoE). In addition FE-calculations were performed to investigate the influence of the parameters that could not be clearly identified by measurements.