Annoying noise can substantially diminish the perceived quality of a car. Automotive manufacturers increasingly perform squeak and rattle analyses on test rigs that simulate road excitations.
Within the present work, a shaker stand with four electromagnetic actuators was built and deployed at the BMW plant in Munich. The shakers are inherently instable and highly coupled through the vehicle chassis. A stabilizing MIMO-controller was deduced from an analytical model of the test rig to control the shakers.
By control enhancements with inverse system models and improvements of the excitation method, the simulation quality of hydraulic test rigs is achieved. At the same time, the new concept yields distinct cost and efficiency advantages.
«
Annoying noise can substantially diminish the perceived quality of a car. Automotive manufacturers increasingly perform squeak and rattle analyses on test rigs that simulate road excitations.
Within the present work, a shaker stand with four electromagnetic actuators was built and deployed at the BMW plant in Munich. The shakers are inherently instable and highly coupled through the vehicle chassis. A stabilizing MIMO-controller was deduced from an analytical model of the test rig to control th...
»