Numerical Modeling and Experimental Verification for High-Speed and Heavy-Load Planar Mechanism with Multiple Clearances

Meng, Fangang; Wu, Shijing; Zhang, Fan; Liang, Liang
October 2015
Mathematical Problems in Engineering;10/29/2015, p1
Academic Journal
Transmission mechanism is one of the most important parts of the Ultra-High Voltage (UHV) circuit breaker. It has specific characteristics such as fast response, high speed, and heavy load in the processes of open and close actions. This paper studies the effects of multiple clearances on the working characteristics of transmission mechanism system, especially the motion of its journal center path during operation. It builds a nonlinear kinetic model of transmission mechanism considering the system energy losses due to the impact and friction between the journal and bearing inside clearance joints. Also, an experimental platform is built to measure the displacement and velocity of the moving contact. The results show that the existence of 15 clearance joints in our mechanism system can cause hysteresis effects on the velocity and acceleration of the moving contact, as well as its acceleration fluctuation. Meanwhile, the increase of friction coefficient will stabilize the dynamic characteristic. In addition, both the experimental and simulation results indicate that the motion of the journal center, which is unevenly distributed along the circle, is characterized by three phases: free flight motion, contact motion, and impact motion.


Related Articles

  • Analysis of influence of bearing clearance on the static carrying capacity of multi-row slewing bearings. Krynke, Marek; Borkowski, Stanisław; Selejdak, Jacek // Periodica Polytechnica: Transportation Engineering;2014, Vol. 42 Issue 1, p43 

    The effect of selected bearing clearances in double row ball bearing and three row roller on their static carrying capacity is presented in the paper. An original method of determination of these profiles by means of the author's program that was based on a calculation model with rigid rings was...

  • Theory of macroscopic fluctuations in systems of particles, interacting with hydrodynamic and gaslike media. Nikolayenko, S. O.; Slyusarenko, Yu. V. // Journal of Mathematical Physics;Nov2010, Vol. 51 Issue 11, p113301 

    Our work offers a stochastic approach for description of long wave fluctuations in systems of particles interacting with hydrodynamic media. The approach is based on the averaging of nonlinear dynamic equations over random initial conditions for these equations. Random character of the initial...

  • Experimental Investigation of Static Load Characteristics. Alexander, Tavlintsev; Andrey, Pazderin; Anton, Suvorov; Pavel, Chusovitin; Olga, Malozemova // Advanced Materials Research;2014, Vol. 960-961, p969 

    It is common practice to use 2nd order polynomial load model for steady-state power flow calculation. The paper describes the experiment for obtaining static load characteristics and the technique for identifying coefficients of the load model based on remote metering system data.

  • Nonlinear dynamics of large fluctuations, and how they can be controlled. Dykman, M. I. // AIP Conference Proceedings;2000, Vol. 502 Issue 1, p3 

    We provide an introduction and briefly review some recent results on the theory of large infrequent fluctuations in which a system moves far away from a metastable state. Although fluctuations happen at random, the motion in a large fluctuation is essentially deterministic. We give the equations...

  • Feeder and Service Load Calculations, Part 3.  // Electrical Construction & Maintenance Exclusive Insight;12/8/2015, p1 

    The article focuses on demand factor which, the ratio of the maximum demand of a system, which is used to account the actual usage versus the available usage of the circuit load.

  • Cable Heating Effects due to Harmonic Distortion in Electrical Installations. O'Connell, Kevin; Barrett, Martin; Blackledge, Jonathan; Sung, Anthony // Proceedings of the World Congress on Engineering 2012 Volume II;2012, p1 

    The increasing use of non-linear loads in electrical installations has exacerbated the problems of harmonic distortion in industrial and commercial electrical systems. In the UK the current practice to determine the cable size for an electric circuit is to use BS7671. However, previously the...

  • 25 years on the circuit. Dufournet, Denis; Montillet, Georges // International Power Generation;Aug/Sep2002, Vol. 25 Issue 7, p35 

    Focuses on the progress in the manufacture of high-voltage circuit breaker technology. Benefits of high-voltage circuit breakers; Use of sulphur hexafluoride in circuit breaker technology; Development of the self blast circuit breaker.

  • The theory of operation of transistorized Marx bank circuits. Mallik, Kanad // Review of Scientific Instruments;Apr99, Vol. 70 Issue 4, p2155 

    Describes the formulation of a theory of operation of transistorized Marx bank circuits (MBC), which are used to generate high voltage fast pulses. Inability of the MBC to function when the circuit current cannot reach a threshold level; Trigger dependence of the performance of the MBC.

  • A high-voltage pulser circuit with subnanosecond rise time. Rai, V. N.; Shukla, M. // Review of Scientific Instruments;Jun94, Vol. 65 Issue 6, p2134 

    A fast (≤1 ns rise time) high-voltage pulser circuit was developed using 2N5551/2N5550 transistors in avalanche mode as switching elements. This circuit has transistors in series stack configuration and provides ∼2 kV amplitude and ≤1 ns rise time into 50 Ω with a 13 ns delay...

  • High-voltage regulator is 100%-surface-mountable. Gross // EDN;11/24/99, Vol. 44 Issue 24, p178 

    Presents a high-voltage regulator circuit design. Problems in generating a high-voltage supply from a medium-voltage input; Circuit techniques used in the design to handle high voltages; Advantages presented by the circuit design.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics