The research about application of quasi-zero stiffness vibration isolation technology in a large vehicle-mounted optic-electronic equipment

Chen, Zhaobing; Yu, Song; Wang, Bing; Xinyu, Zhuang; Li, Feng

doi:10.1016/j.asej.2022.101841

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…Equation (20) indicates that both F mx and F mz are equal to zero when the eccentricity value of ε = 0. This means that the IWM does not create the force excitations of F mx and F mz .…”

Section: Excitation Of the Iwmmentioning

confidence: 99%

“…[16][17][18][19] Then, the different structures of the NSS using six oblique springs, X-structure, optic-electronic equipment, electromagnetic mechanisms, and magnetic negative stiffness dampers were also proposed to enhance the isolation performance of the seat's isolation system. [20][21][22][23] To further enhance the NSS's isolation performance, the magnetic damping in the above structures was also optimized and controlled by the optimal control algorithms. 24,25 The studies indicated that the NSS using the magnetic negative mechanisms also strongly ameliorated the ride quality of the driver.…”

Section: Introductionmentioning

confidence: 99%

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A comparative study of isolation performance of electric automobile seat’s suspension added by negative-stiffness structure models

Zhang

et al. 2023

Noise & Vibration Worldwide

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To evaluate the isolation performance of the negative-stiffness structure (NSS) used by the tuned-mass-damper (NSS-TMD) and the air pistons (NSS-AP) on improving the ride quality of the electrical automobile (EA), an EA’s dynamics model is built under the excitation of the road surface roughness and the in-wheel-motor. Based on the root mean square value of the driver’s seat acceleration response used to assess the driver’s ride quality, two models of the seat suspension added by NSS-AP and NSS-TMD are then simulated to compare the performance between NSS-TMD and NSS-AP in enhancing the ride quality of the EA. The study indicates that both NSS-TMD and NSS-AP added to the seat suspension improve the driver’s ride quality better than the seat suspension without the NSS. Particularly, the root mean square value of the driver’s seat acceleration with the NSS-AP is smaller than that of NSS-TMS by 17.2%. Additionally, when the EA is traveling on the road surfaces of ISO level A, level B, and level C with a high velocity of over 70 km/h, the root mean square value of the driver’s seat acceleration with the NSS-AP is also slowly increased and slower than that of the NSS-TMD. Moreover, the root mean square value of the driver’s seat acceleration with the NSS-AP is also reduced in comparison with the NSS-TMD under the change of the total mass of the in-wheel-motor and the rotor’s eccentricity. Thereby, the NSS-AP improves the EA’s ride quality better than the NSS-TMD; and the NSS-AP should be used on the seat suspension of the EA to further enhance the ride quality.

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“…Equation (20) indicates that both F mx and F mz are equal to zero when the eccentricity value of ε = 0. This means that the IWM does not create the force excitations of F mx and F mz .…”

Section: Excitation Of the Iwmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A comparative study of isolation performance of electric automobile seat’s suspension added by negative-stiffness structure models

Zhang

et al. 2023

Noise & Vibration Worldwide

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“…Kamil Kocak et al [ 9 ] employed flexible beams and a quasi-zero stiffness structure to reduce the starting isolation frequency range. Chen et al [ 10 ] used a combination of quasi-zero stiffness isolation systems to significantly suppress the vibration of a large vehicle-mounted optoelectronic tracking device under a moving platform. Bo et al [ 11 ] used a lever-type quasi-zero stiffness (QZS) vibration isolator to establish a theoretical model with ECD-QZS-VI, further improving the vibration suppression performance in the resonance region.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Zero Stiffness Vibration Sensing and Energy Harvesting Integration Based on Buckled Piezoelectric Euler Beam

Tuo,

Xu,

et al. 2023

Sensors

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This paper presents a novel quasi-zero stiffness vibration sensing and energy harvesting integration system for absolute displacement measurements based on a buckled piezoelectric Euler beam (BPEB) with quasi-zero stiffness (QZS) characteristics. On one hand, BPEB provides negative stiffness to the system, thus creating a vibration-free point within the system and transforming the absolute displacement measurement problem into a relative motion sensing problem. On the other hand, during the measurement process, the BPEB collects the vibration energy from the system, which can provide electrical energy for low-power relative motion sensing devices and remarkably suppress the frequency range of the jump phenomenon, thereby further expanding the frequency domain measurement range of the sensing system. The research results have shown that this system can measure the absolute motion signal of the tested object in low-frequency vibration with small excitation. By adjusting parameters such as the force–electric coupling coefficient and damping ratio, the measurement accuracy of the sensing system can be improved. Furthermore, the system can convert the mechanical energy of vibrations into electrical energy to power the surrounding low-power sensors or provide partial power. This could potentially achieve self-powering integrated quasi-zero stiffness vibration sensing, offering another approach and possibility for the automation development in wireless sensing systems and the Internet of Things field.

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“…21 Also, the QZSS's vibration isolation system using six oblique springs, X-structure, and optic-electronic equipment was also proposed to enhance the performance of the isolation systems. [22][23][24] To further enhance the performance of the QZSS, its design parameters were also optimized based on the GA. [25][26][27] The studies indicated that the QZSS strongly ameliorated the ride quality of the driver. The experiment of the QZSS had been also researched for proving the actual performance of the QZSS.…”

Section: Introductionmentioning

confidence: 99%

Performance study of semi-active seat suspension added by quasi-zero stiffness structure under various vibratory roller models

Yang

Nguyen

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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To enhance the vibratory roller’s comfort, three different types of seat suspension including the seat’s semi-active suspension system (SASS) controlled by the FLC-PID controller, seat’s passive suspension system (PSS) added by the quasi-zero stiffness structure (QZSS), and seat’s SASS added by the QZSS are proposed. Three different vehicle dynamic models including a one-dimensional (1D) model, two-dimensional (2D) model, and three-dimensional (3D) model are established to evaluate the performance and stability of the seat’s suspension systems under different operating conditions. The root mean square (RMS) acceleration and power spectral density (PSD) acceleration of the seat have been selected as the evaluation indexes. The mathematical model and numerical simulation method are then tested via the experiment to enhance the reliability of the research results. The research result shows that the seat’s vibration characteristic using 1D, 2D, and 3D models is the same. However, the seat’s RMS acceleration and maximum PSD acceleration using the 1D model are increased by 30.6% and 61.7% in comparison with the 3D model, whereas the seat’s acceleration and PSD acceleration using the 3D model are like the measured results. Thus, the use of the vehicle model greatly influences the research result. By adding the QZSS into the seat’s SASS, the seat’s RMS and maximum PSD accelerations are greatly reduced in comparison with all seat’s PSS, seat’s SASS without the QZSS, and seat’s PSS added by QZSS. Therefore, the seat’s SASS added by the QZSS should be applied to further enhance the vibratory roller’s comfort.

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The research about application of quasi-zero stiffness vibration isolation technology in a large vehicle-mounted optic-electronic equipment

Cited by 8 publications

References 12 publications

A comparative study of isolation performance of electric automobile seat’s suspension added by negative-stiffness structure models

A comparative study of isolation performance of electric automobile seat’s suspension added by negative-stiffness structure models

Quasi-Zero Stiffness Vibration Sensing and Energy Harvesting Integration Based on Buckled Piezoelectric Euler Beam

Performance study of semi-active seat suspension added by quasi-zero stiffness structure under various vibratory roller models

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