Development of Active Engine Mounts Based on Piezo Actuators

Kraus, Roman; Herold, Sven; Millitzer, Jonathan; Jungblut, Timo

doi:10.1007/s38311-014-0012-7

Cited by 19 publications

(12 citation statements)

References 3 publications

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“…Active mounts can achieve better vibration isolation and relative displacement control performance in a broader frequency bandwidth via active force [3][4][5]. In the research of active mounting systems, the actuators and control methods that directly affect system performance have received extensive attention [6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Bai

Qian

et al. 2022

Chin. J. Mech. Eng.

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Engine mount system affects the automobile NVH performance. Active mounts would achieve excellent vibration isolation and relative displacement control performance in a broad frequency bandwidth by outputting controlled force to the mounting system. The actuator and control method of the active mounts determine the system performance. In this paper, an active mount based on the smart material, i.e., Terfenol-D rod, is proposed, which mainly includes three parts: rubber spring, magnetostrictive actuator (MA), and hydraulic amplification mechanism (HAM). Dynamic model of the active mount is correspondingly established. A state feedback control method based on x-LMS (Least-Mean-Square) algorithm is proposed as well. Specifically, with the consideration of the unmeasurable state parameters in the active mounting system, an x-LMS state feedback controller with the system state as the reference signal is constructed by employing Sage-Husa Kalman filter to realize the state estimation of the active mounting system. Then a detailed analysis of the proposed control method is conducted, with deriving iterative formula of tap-weight vector. Sequentially, the problem of the dependence on the excitation signal in the x-LMS algorithm is addressed. The feasibility and capability of the proposed control method are verified and evaluated by simulation of a two-degree-of-freedom active mounting system.

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Section: Introductionmentioning

confidence: 99%

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Bai

Qian

et al. 2022

Chin. J. Mech. Eng.

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show abstract

“…Compared with the passive engine mount or semiactive engine mount, the active engine mount (AEM) achieves a significant performance improvement in decreasing the wide frequency band vibration [1]. Several concepts for AEM have been proposed [2][3][4][5]. e common AEM [6][7][8][9] is similar to the conventional hydraulic engine mount (HEM) with an actuator, such as a solenoid or a voice (moving) coil actuator, as shown in Figure 1; the AEM is excited by a controller, and it generates active output forces to suppress the high-frequency engine vibrations (no less than 20 Hz).…”

Section: Introductionmentioning

confidence: 99%

Model of the Secondary Path between the Input Voltage and the Output Force of an Active Engine Mount on the Engine Side

Zhang

Shi

2020

Mathematical Problems in Engineering

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e active engine mount (AEM) provides an effective solution to improve the acoustic and vibration comfort of a car. e same AEM can be installed for different engines and different vehicle bodies and attenuates the engine vibration, which is one of the most pressing challenges. To study this problem, this paper develops a mathematical model of a secondary path between the input voltage and output force of the AEM on the engine side considering the frequency-dependent characteristic of the stiffness, which includes the structure parameters of the AEM as well as the dynamics of the actuator, the fluid in the inertia track, the foundation (vehicle body), and the attenuated vibrating object (AEM preload or engine). e proposed model is validated by three test cases without vibration excitation, which are performed with different AEM preloads and foundations. e AEM is considered as an active part and passive part, the mass of which is determined experimentally. Parameter effect on the dynamic characteristics of the secondary path of the AEM is studied based on three tests and a numerical simulation.

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Section: Introductionmentioning

confidence: 99%

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Si¹,

Bai²,

Qian³

et al. 2020

Preprint

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The engine mount system affects the automobile NVH performance. Active mounts would achieve excellent vibration isolation and relative displacement control performance in a broad frequency bandwidth by outputting controlled force to the mounting system. The actuator and control method of the active mounts determine the system performance. In this paper, an active mount based on the smart material - Terfenol-D rod is proposed, which mainly includes three parts: rubber spring, magnetostrictive actuator (MA), and hydraulic amplification mechanism. Dynamic model of the active mount is correspondingly established. A state feedback control method based on x-LMS algorithm is proposed as well. Specifically, with the consideration of the unmeasurable state parameters in the active mounting system, an x-LMS state feedback controller with the system state as the reference signal is constructed by employing Sage-Husa Kalman filter to realize the state estimation of the active mounting system. Then a detailed analysis of the proposed control method is conducted, with deriving iterative formula of tap-weight vector. Sequentially, the problem of the dependence on the excitation signal in the x-LMS algorithm is addressed. The feasibility and capability of the proposed control method are verified and evaluated by simulation of a two-degree-of-freedom active mounting system.

show abstract

Development of Active Engine Mounts Based on Piezo Actuators

Cited by 19 publications

References 3 publications

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Model of the Secondary Path between the Input Voltage and the Output Force of an Active Engine Mount on the Engine Side

Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

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