DIGITAL CONTROLLER FOR AN AUTOMOTIVE STEERING TEST RIG

摘要

A digital control system for performing a durability test with a steering test rig is disclosed. The digital control system comprises a learning control device for controlling periodic reference signals in servo actuator systems, such as hydraulic cylinders and electrical motors. This learning device is referred to as POISON (periodic on-line iterative signal optimum navigation) controller By iterative learning of a corrected reference signal the POISON controller is able to compensate for control errors which occur in conventional closed loop control systems. In contrast to existing control systems, the POISON controller is capable of permanent online operation. Therefore it is able to compensate for certain changes in the controlled system. The POISON controller can easily be added to existing servo control loops.