An original braking controller with torque sensor

The present evolution of regulated braking systems requires the knowledge and control of dynamic parameters of the vehicle during the braking process. In a classical ABS system, the chassis speed is only known approximately and this is not sufficient to control the slip ratio. An advanced control principle requiring additional dynamic parameters would allow us to improve the braking performance. The application we have developed is based on a new principle with adaptive algorithms and online control of the braking torque based on the strain measurement on the calliper support. The adaptive principle has been chosen in order to improve robustness and to take account of the parameter variations and the variation of the behaviour when the system is perturbed. Precautions must be taken when algorithms are initialized to ensure good results. Performance improvements have been achieved by simulation and the complexity of the algorithms allows real implementation in a realistic, industrial microprocessor based system.< >