Abstract: A method of, and a system for, controlling and predicting the health of a torque converter clutch control system is provided. The method includes determining, via a controller, rotational input and output speeds of the torque converter and a torque converter clutch slip. The method also includes determining, via the controller, whether a set of predetermined conditions are met for predicting the health of the torque converter clutch control system. The method includes gathering a plurality of initial features of the vehicle propulsion system, determining statistical information about the plurality of initial features, and selecting at least one feature of the vehicle propulsion system based on the statistical information. Furthermore, the method includes classifying the health of the torque converter clutch control system based on the selected feature or features. In some forms, principal component analysis is used to select the feature or features used for classification.

Abstract: A method of, and a system for, controlling and predicting the health of a torque converter clutch control system is provided. The method includes determining, via a controller, rotational input and output speeds of the torque converter and a torque converter clutch slip. The method also includes determining, via the controller, whether a set of predetermined conditions are met for predicting the health of the torque converter clutch control system. The method includes gathering a plurality of initial features of the vehicle propulsion system, determining statistical information about the plurality of initial features, and selecting at least one feature of the vehicle propulsion system based on the statistical information. Furthermore, the method includes classifying the health of the torque converter clutch control system based on the selected feature or features. In some forms, principal component analysis is used to select the feature or features used for classification.

Abstract: A computer implemented method for simulating interactions between relatively movable objects of arbitrary shapes and sizes wherein a space to be modelled is mapped to a grid of cells each of which is a basic spatial element; a first object is mapped to a first set of grid cells representing the shape of the first object and a second object is mapped to a second set of grid cells representing the shape of the second object, movement of at least one of the objects through the modelled space is simulated by mapping the moved object to an updated set of grid cells selected to represent the shape of the moved object after a predetermined stepwise movement of the object, and movements which would result in sets of cells representing different objects including a common cell are precluded. Each basic spatial element may be a pixel or a voxel.