reduces, or even obviates, the need for the solid particle suspension. Introduction . Electrorheological fluids as a means of operating clutch mechanisms were. Smart Technology produces and sells Smart Materials like Electro Rheological Fluid and Piezo Actuators worldwide. The paper presents experimental results concerning the wear of heterogeneous electro-rheological (ER) fluids operating as working fluids in a complex clutch.
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Dynamics of electrorheological clutch and a problem for non-linear parabolic equation with non-local boundary conditions W. The general problem on dynamics of the electrorheological clutch is formulated and studied. To purchase short term access, please sign in to electrorheolgical Oxford Academic account above.
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See also [ edit ] Electromagnetic clutch External links [ edit ] HowStuffWorks has a detailed explanation of the working of a clutch. Receive exclusive offers and updates from Oxford Academic. Electrorheilogical Most Read Most Cited Diagnostics of wear thermoelastic instability based on sliding contact parameter monitoring.
Email alerts New issue alert. Sign In or Create an Account. The existence of a solution of optimal control The operation of the electrorheological clutch is simulated by a nonlinear parabolic equation which describes the motion of electrorheological fluid in the gap between the driving and driven rotors. At HKUST, researchers have employed nanotechnology to develop a novel type of ionic ER fluid that consists of white powder particles with an average diameter of 50 nanometers dispersed in silicone oil.
Views Read Elfctrorheological View history. Nonlocal nonlinear boundary condition is given on a part of the boundary, which corresponds to the driven rotor.
Sign In Forgot password? Don’t already have an Oxford Academic account? This page was last edited on 16 Marchat At the flick of a switch, the ER suspension, which has the fluidity of milk, becomes sticky and solidifies into a material as hard as plastic within a few milliseconds. Related articles in Web of Science Google Dlectrorheological.
From Wikipedia, the free encyclopedia. It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. Approximate problem is formulated in a form of clytch problem with a delay. Regularization of the semilinear sideways heat equation.
Electrorheological clutch – Wikipedia
Most users should sign in with their email address. A small ER-based clutch for use in motorised bicycles is expected to be ready in early The velocity on the surface of the driven rotor is defined as an integral of the torque function over time t from zero to t.
The velocity of the fluid is specified on the surface of the driving rotor. Retrieved from ” https: The properties of ER fluids make them ideal materials to transfer energy and control motion electronically, particularly in the automotive industry. Deutsches Urheberrecht mit Print on Demand.
When an external electric field is applied, they can be changed within a few milliseconds a few thousandths of a second into a solid state but revert to liquid instantly when the current goes off. Clutches Automotive transmission technologies. Researchers have used the fluids to create a new type of clutch.
The existence of a solution of optimal control problem is proved and necessary optimality conditions are established. Oxford University Press is a department of the University of Oxford.
The fluids are capable of exhibiting a high yield stress the strength of the materials in solid state of kPa when electrically charged, ten times stronger than the previously achievable ER solid strength. In this case, the velocity of the driving rotor is prescribed on one part of the boundary.
Optimal control of electrorheological clutch described by nonlinear parabolic equation with nonlocal boundary conditions.