Online Identification of Active Absorbers in Automotive Vibration Control

Buttelmann, Maik; Lohmann, Boris; Marienfeld, Peter; Svaricek, Ferdinand; Vinogradski, Marat; Nedeljkovic, Nikola

doi:10.1016/s1474-6670(17)34396-3

Cited by 2 publications

(5 citation statements)

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“…e AEM is mainly used to attenuate the engine vibration. en, according to equation (13) and the previous three experiments, the effect of the parameters on the amplitude and phase of the secondary path is analysed based on the mass of the active part system, which is 140.1 kg.…”

Section: Parameter Effect Analysismentioning

confidence: 99%

“…e model of the secondary path of the AEM includes the mass of the moving coil actuator, mass of the passive part of the AEM system, and mass of the active part of the AEM system according to (13). Figure 13(a) shows that the larger mass of the moving coil actuator corresponds to the larger amplitude of the secondary path of the AEM and smaller phase between the applied voltage and the output force of AEM at high frequencies.…”

Section: Massmentioning

confidence: 99%

“…Seba et al [12] identified the magnitude and phase plot of the frequency response of the secondary path between the force point actuator inputs and the accelerometer outputs, which was applied to the feedforward control. Buttelmann et al [13] identified the Bode plot of the secondary path between the active absorber and the disturbance sensor on the chassis side of the engine mount. Hausberg et al [14] identified the secondary path between the active engine mount and the accelerometer located on the chassis side of the engine mount for the feedforward control.…”

Section: Introductionmentioning

confidence: 99%

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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: Parameter Effect Analysismentioning

confidence: 99%

Section: Massmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…2,3 In general, most conventional ANC technologies that reduce noise use audio speakers, but there are also several basic studies on how to cancel out noise using vibration generation. [4][5][6][7][8] Fuller introduced an active structural acoustic control (ASAC) system that reduces noise by considering the sound radiation efficiency of structural modal vibration in low frequency bands using piezoelectric ceramic actuators mounted on a panel. 4 Oliveira conducted a study to improve psychoacoustic metrics in the passenger compartment using a structural sensor/actuator pair while exciting engine noise in the vehicle mockup.…”

Section: Introductionmentioning

confidence: 99%

“…5 Shoreshi and Buttelmann conducted an active vibro-acoustic control study to reduce engine noise using a feed forward algorithm and an active absorber mounted on a frame in a real vehicle. 6,7 Kraus conducted an active control study to reduce engine noise by installing active engine mounts based on piezo actuators in a real vehicle. 8 Overall, approaches to reduce noise caused by the engine of vehicles through active noise control can be classified as follows.…”

Section: Introductionmentioning

confidence: 99%

Development of a Systematic Methodology for Active Noise Control with Vehicle Engine Mounts Excitation

Chang,

Roberts

2023

The International Journal of Acoustics and Vibration

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Active noise control (ANC) technology using speakers as actuators has an excellent performance, but since it generates anti-noise signals in a path completely different from the vehicle's noise source, performance can be greatly reduced at a location far from the error sensor, and this problem can get worse as the frequency to be controlled increases. Another approach is the vibration-based ANC technology that excites the body member around the engine mount and reduces acoustic error signals in a passenger compartment. This approach has the advantage of being effective even at a distance from the error sensor and reducing vibration and noise together when trying to cancel out the structure borne noise generated by the engine because the paths from the primary source and the secondary source to the interior are almost identical. This paper presents a systematic methodology for this vibration-based ANC technology to achieve high performance in vehicles. First, through noise reduction simulation, the number of error sensors, the location of actuators, the force requirements, and an appropriate system are proposed. Next, to improve performance even with a small number of actuators and limited power when applying this technology in vehicles, an algorithm using the control effort weighting parameter is introduced into the existing FxLMS algorithm and modelled on the controller. Finally, a noise reduction control test is performed in a vehicle under static and driving conditions, and the results are reviewed.

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Online Identification of Active Absorbers in Automotive Vibration Control

Cited by 2 publications

References 1 publication

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

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

Development of a Systematic Methodology for Active Noise Control with Vehicle Engine Mounts Excitation

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