Photoelectric transducer with a spring mechanism

1964 ◽  
Vol 7 (1) ◽  
pp. 22-24
Author(s):  
Ya. M. Tseitlin ◽  
I. V. L'vovich ◽  
O. I. Yusov
Keyword(s):  
Photoelectric Transducer ◽  
Spring Mechanism

scholarly journals Exchange-spring mechanism and Griffiths-like phase in room-temperature magnetoelectric Ni–BaTiO3 composites

2021 ◽  
Author(s):  
Ramany Revathy ◽  
Nandakumar Kalarikkal ◽  
Manoj Raama Varma ◽  
Kuzhichalil Peethambharan Surendran
Keyword(s):  
Room Temperature ◽  
First Report ◽  
Magnetoelectric Composites ◽  
Exchange Spring ◽  
Spring Mechanism

This is the first report on the occurrence of the exchange spring mechanism and a Griffiths-like phase in Ni–BaTiO3 magnetoelectric composites with 0–3 and 1–3 connectivity.

The Use of Damping Based Semi-Active Control Algorithms in the Mechanical Smart-Spring System

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Wander Gustavo Rocha Vieira ◽  
Fred Nitzsche ◽  
Carlos De Marqui
Keyword(s):  
Active Control ◽  
Control Algorithm ◽  
Control Strategies ◽  
Vibration Reduction ◽  
Flow Analysis ◽  
Coupled Systems ◽  
Control Technique ◽  
Control Algorithms ◽  
Control Techniques ◽  
Spring Mechanism

In recent decades, semi-active control strategies have been investigated for vibration reduction. In general, these techniques provide enhanced control performance when compared to traditional passive techniques and lower energy consumption if compared to active control techniques. In semi-active concepts, vibration attenuation is achieved by modulating inertial, stiffness, or damping properties of a dynamic system. The smart spring is a mechanical device originally employed for the effective modulation of its stiffness through the use of semi-active control strategies. This device has been successfully tested to damp aeroelastic oscillations of fixed and rotary wings. In this paper, the modeling of the smart spring mechanism is presented and two semi-active control algorithms are employed to promote vibration reduction through enhanced damping effects. The first control technique is the smart-spring resetting (SSR), which resembles resetting control techniques developed for vibration reduction of civil structures as well as the piezoelectric synchronized switch damping on short (SSDS) technique. The second control algorithm is referred to as the smart-spring inversion (SSI), which presents some similarities with the synchronized switch damping (SSD) on inductor technique previously presented in the literature of electromechanically coupled systems. The effects of the SSR and SSI control algorithms on the free and forced responses of the smart-spring are investigated in time and frequency domains. An energy flow analysis is also presented in order to explain the enhanced damping behavior when the SSI control algorithm is employed.

scholarly journals An Analytical and Numerical Study of Magnetic Spring Suspension with Energy Recovery Capabilities

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3126 ◽  
Author(s):  
Yu Jia ◽  
Shasha Li ◽  
Yu Shi
Keyword(s):  
Energy Recovery ◽  
Numerical Study ◽  
Numerical Models ◽  
Limited Range ◽  
Paradigm Shifts ◽  
Restoring Force ◽  
Highly Nonlinear ◽  
Spring Mechanism ◽  
Paved Road ◽  
Rider Comfort

As the automotive paradigm shifts towards electric, limited range remains a key challenge. Increasing the battery size adds weight, which yields diminishing returns in range per kilowatt-hour. Therefore, energy recovery systems, such as regenerative braking and photovoltaic cells, are desirable to recharge the onboard batteries in between hub charge cycles. While some reports of regenerative suspension do exist, they all harvest energy in a parasitic manner, and the predicted power output is extremely low, since the majority of the energy is still dissipated to the environment by the suspension. This paper proposes a fundamental suspension redesign using a magnetically-levitated spring mechanism and aims to increase the recoverable energy significantly by directly coupling an electromagnetic transducer as the main damper. Furthermore, the highly nonlinear magnetic restoring force can also potentially enhance rider comfort. Analytical and numerical models have been constructed. Road roughness data from an Australian road were used to numerically simulate a representative environment response. Simulation suggests that 10’s of kW to >100 kW can theoretically be generated by a medium-sized car travelling on a typical paved road (about 2–3 orders of magnitude higher than literature reports on parasitic regenerative suspension schemes), while still maintaining well below the discomfort threshold for passengers (<0.315 m/s 2 on average).

scholarly journals 20706 A Study on a Nonlinear Spring Mechanism for a Vertical Seismic Isolation Device

2006 ◽  
Vol 2006.12 (0) ◽  
pp. 471-472 ◽  
Author(s):  
Nobuhiro Wakabayashi ◽  
Kenichiro Ohmata ◽  
Osamu Tanaka
Keyword(s):  
Seismic Isolation ◽  
Nonlinear Spring ◽  
Spring Mechanism ◽  
Isolation Device

Exchange-spring mechanism of soft and hard ferrite nanocomposites

2013 ◽  
Vol 48 (8) ◽  
pp. 2871-2877 ◽  
Author(s):  
S. Manjura Hoque ◽  
C. Srivastava ◽  
V. Kumar ◽  
N. Venkatesh ◽  
H.N. Das ◽  
...  
Keyword(s):  
Exchange Spring ◽  
Spring Mechanism
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