Active Engine Mount with Piezo-Actuator for Vibration Control

Coupled axisymmetric finite element model of a hydraulically amplified magnetostrictive actuator for active powertrain mounts

“…Hydraulic amplification [3,4] is attractive as it can generate large mechanical gain in a compact package. The fluid used for amplification can be either the same as the hydromount's fluid [5] or isolated from it [6]. The former design is more attractive for its simplicity while the latter is more efficient as the displacement of the smart material driver is not degraded by the compliance of the mount.…”

Active Engine Mounting Control Algorithm Using Neural Network

“…Furthermore, passive engine mount is efficient only at the high frequency range which therefore shows the inability for the mount to isolate engine disturbance at the lower frequency region such as during idling or when the air conditioner is switched on. Since also the demand for lighter vehicle and powerful engine has resulted in the adverse effect to the comfort of the passenger therefore, the evolution of an active engine mounting is necessary to overcome the limitations of the passive system [3,[10][11][12][13].…”

“…translational in the vertical (bounce), lateral and longitudinal directions and rotational about the vertical (yaw), lateral (roll) and longitudinal (pitch) axis [1,8,11,14]. However it was noted that the dominant excitation occurs along the vertical direction and is sinusoidal in nature [10,12,15,16]. Thus in this paper only the bounce disturbance is considered and the passive mount is modeled as a linear energy dissipating element with stiffness and damping along the vertical direction.…”

“…In [4] the performance of two adaptive-based algorithms namely filtered-x LMS and the proposed error-driven minimal controller synthesis (Er-MCSI) are compared in vibration isolation of an engine mount using an internal electromagnetic actuator as the active force component and in [11] Karimi and Lohmann has developed a relatively new robust optimal control for active vibration isolation of engine vibration based on Haar wavelet. Other examples of feedback and feedforward active engine mounting controllers can be found in [5,10,12,16,17]. In this paper we are proposing the application of neural network in direct inverse control architecture for attenuating the engine vibration to the chassis.…”

Vibration control of a flexible structure using a hybrid mount

“…Thus, it has relatively high dynamic sti ness and this may deteriorate isolation performance in the non-resonant Active vibration control of exible structures and discrete systems utilizing smart materials has been studied in recent years by many researchers. So far, potential candidates for the smart materials in active vibration control include electro-rheological uids [4,5], shape memory alloys [6] and piezoelectric materials [7][8][9][10][11][12]. As well-known, the piezoactuator is featured by fast response time, small displacement, and low power consumption.…”