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Development and in-vehicle test of a novel active engine mount

: Kraus, Roman

Actuator 2012, 13th International Conference on New Actuators & 7th International Exhibition on Smart Actuators and Drive Systems. Conference Proceedings : Bremen Convention Center, 18-20 June 2012
Bremen: Messe Bremen, 2012
ISBN: 978-3-933339-20-1 (CD-ROM)
ISBN: 978-3-933339-19-5
International Conference on New Actuators <13, 2012, Bremen>
International Exhibition on Smart Actuators and Drive Systems <7, 2012, Bremen>
Fraunhofer LBF ()
in-vehicle test; Adaptronik; Mechatronik

The paper presents the development and performance testing of an engine mount featuring a stroke-amplified piezo stack actuator that is decoupled from the quasi-static loads. The actuator introduces its counteracting force through a coupling element whose dynamic stiffness increases with increasing frequency, acting as a high-pass filter. An elastic coupling element arranged in parallel with the actuator carries the static and quasi-static loads. This arrangement reduces the load requirements for the actuator. Because the engine induces multi-order narrowband distortions, the controller uses the narrowband feedforward strategy (Filtered-X LMS) to compensate forced and resonant distortions, minimizing the acceleration of the base structure. For the performance tests the active engine mount is installed in a test vehicle mounted on an full-vehicle test bench.