Controlling of automatic transmission gear shift by using model predictive control

The usage area of model predictive control technology with the developments in industrial process control is expanding day by day. Among the many effective factors for its popularity are allowing the control of the multi input multi output (MIMO) systems or systems that contain non-linear behaviors and dynamic systems to interact with each other. It has a significant advantage to provide the desired solution quickly under various constraints. In the first section of the thesis, the position of the automatic gearbox in the industry, comparison with the other gearbox types, determination of advantages and disadvantages are included. Then, the usage area of model predictive control in the automotive industry and the control structure that can be used for transmission gear shifting with the aims and contents of the work to be done in this direction are mentioned. In the second part, the architecture and software model of the transmission that is controlled with a model predictive controller is mentioned. The information about the torque handover control subsystem and its contents are included in the software is given. In addition, transmission software is supported with a simulation in the AVL Cruise™ environment where the the transmission architecture which has a simple planetary gear set and the combined ravigneaux planetary gear set is connected and the powertrain is also included. The system model for model predictive control is included in the third section. The modeling of all the clutches, brakes and gear sets in the architecture are built by using bond graph methodology is in this section. In the modeling of the clutches has also benefited from different clutch friction models. In the fourth chapter, general information about model predictive control, basic approaches and applications in the automotive sector are mentioned. After this information on the control design, the controller design and its contents for the torque handover phase are included in this section. The controller is located in speed synchronization phase of the component, which is named torque handover.