Gregor Probst

Fuzzy expert system for automatic transmission control

An intelligent electronic transmission control system using both fuzzy logic and conventional methods is presented. The controller is part of the drive train, so that special attention must be paid to the systems security. Two different methods for prioritizing the controller outputs are proposed, and it is shown how these methods can be realized within fuzzy control theory. Next, it is shown, in an application, how rules can be derived as a mixture of human expert knowledge and dynamic process models. The controller is tested in a simulation environment. The results are compared with those obtained by using conventional shift logic.<<ETX>>

Architecture for integrated power-train management

Improving driving comfort and reducing fuel consumption are competing targets in the development process of a car. This conflict can be solved by using Siemens VDO’s Integrated Powertrain Management (IPM) to optimise the interaction between the internal combustion engine, an electric motor (e.g. Integrated Starter Generator) and automatic or automated manual transmission. This article shows how additional functions, implemented in software, can increase the value of a vehicle. The open architecture enables the flexible integration of customer-specific solutions, and allow fuel savings of about 15 % to be achieved.