Coupling and driveline control

This PhD project is carried out in collaboration with Volvo Construction Equipment.

People

Academic counterpart is Per-Olof Gutman (CIAM/Technion) and Anders Lindquist (CIAM).

Financing & status

The project is currently inactive.

Status

The project is currently inactive.

Background

An important success factor in wheel loaders, articulated haulers, graders, and also trucks and other heavy vehicles is smooth automatic power shifting; i.e., shifting power rapidly from one gear to another parallel gear without creating perceptible jerk, in such a way that power losses are minimised.  Smooth automatic power shifting will make it possible to include a large number of gear ratios, which will enable the engine to run at fuel-optimal rotational speed and will make it possible to eliminate the torque converter present in current drivelines, thus enhancing drivability and increasing the fuel efficiency.  The purpose of the project is to develop a parametrised, possibly adaptive, robust feedback controller for a single wet clutch, where the transferred torque and clutch speed are the controlled output variables, and the input torque and clutch piston pressure are the the control input variables. It is expected that the project will contribute to friction modelling and compensation. New feedback control algorithms and stability analysis results are expected.

Goals

Develop algorithms for adaptive robust feedback control of the transferred torque and clutch speed in a single wet clutch based on the input torque and clutch piston pressure.
 

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