Test Rig Characterization and Dynamic Testing of a Smart Electro-Magnetic Actuator Journal Integrated Bearing

The principles of the conventional high performance hydraulic vibrator and its operating characteristics are described. An examination is made of the limitations involved and compared to the limitations of electro-magnetic and mechanical vibrators to show significant areas where the hydraulic vibrator has worthwhile advantages. Mention is made of typical applications of hydraulic vibrators to vehicle testing and development. However, a substantial part of the paper is devoted to a specific installation, being a rig primarily designed for the measurement and study of vehicle suspension. This suspension parameter rig essentially consists of four long stroke hydraulic vibrators set in substantial pedestals so that the tyre contact patches of a vehicle may be individually supported and fed vertical inputs. The rig and its associated instrumentation is described in some detail as are its various modes of use from static to dynamic testing up to around 100 Hz. Much of the work carried out on the rig is directly or indirectly associated with vehicle ride. In addition to the ability to feed in single and repetitive waveforms at different phase relationships, road inputs may be simulated.

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Two-dimensional lubrication analysis and design optimization of a Scotch Yoke engine linear bearing

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1243/0954406jmes260 ◽

2006 ◽

Vol 220 (10) ◽

pp. 1575-1587 ◽

Cited By ~ 1

Author(s):

X Wang ◽

A Subic ◽

H Watson

Keyword(s):

Dynamic Testing ◽

Combustion Engine ◽

Design Sensitivity ◽

Two Dimensional ◽

Test Rig ◽

Analysis And Design ◽

Lubricant Flow ◽

Bearing Assembly ◽

Bearing Design ◽

Scotch Yoke Mechanism

Recent study has shown that the application of a Scotch Yoke crank mechanism to a reciprocating internal combustion engine reduces the engine's size and weight and generates sinusoidal piston motion that allows for complete balance of the engine. This paper describes detailed investigation of the performance of a linear bearing assembly, which is one of the key components of the Scotch Yoke mechanism. The investigation starts by solving Reynolds equation for the Scotch Yoke linear bearing. The two-dimensional lubricant flow is numerically simulated and the calculated results are compared with experimental results from a linear bearing test rig. The performance characteristics and a design sensitivity analysis of the bearing are presented. Dynamic testing and analysis of an instrumented linear bearing on a test rig are used to validate the numerical simulation model. The oil supply and lubrication mechanism in the linear bearing are analysed and described in detail. This work aims to provide new insights into Scotch Yoke linear bearing design. In addition, strategies for optimization of the linear bearing are discussed.

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Vibration Control using Electro-Magnetic Actuator: A Review

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2018.4267 ◽

2018 ◽

Vol 6 (4) ◽

pp. 1597-1598

Author(s):

Pravin Uttam Mane

Keyword(s):

Vibration Control ◽

Magnetic Actuator ◽

Electro Magnetic

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Interruption of Medium-Voltage Direct-Currents by Seperation of Contact Elements in Mineral Oil Using an Ultra Fast Electro-Magnetic Actuator

Plasma Physics and Technology Journal ◽

10.14311/ppt.2019.1.73 ◽

2019 ◽

Vol 6 (1) ◽

pp. 73-77

Author(s):

S. Jugelt ◽

C. Leu

Keyword(s):

Electrical Energy ◽

Mineral Oil ◽

Magnetic Actuator ◽

Rapid Separation ◽

Zero Crossing ◽

Medium Voltage ◽

Dielectric Liquids ◽

Electro Magnetic ◽

Current Zero ◽

Energy Grid

The increasing usage of medium-voltage direct-current in upcoming electrical energy grid topologies requests novel solutions for MVDC switching. The interruption of direct-currents is accomplished by enforcing a current zero crossing by adequate means and preventing reignition due to the recovering dc voltage. This paper evaluates the rapid separation of the contact elements in mineral oil leading to a liquid flow around the contact elements and the switching arc. The energy turnover of dielectric liquids interacting with an electric arc is considerably higher leading to heavily increased arc voltages compared to dielectric gases. This paper confirms results of earlier publications and carries them further towards a possible usage in an MVDC switching or protection device. Thus a contact arrangement surrounded by mineral oil in combination with an ultra fast electro-magnetic actuator is introduced and performed measurements are discussed.

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