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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The existence of a solution of optimal control problem is proved and necessary optimality conditions are established. Trapped modes of the Helmholtz equation in infinite waveguides with wall indentations and circular obstacles.

Electrorheological clutch

Regularization of the semilinear sideways heat equation. Part of the Automobile series. Deutsches Urheberrecht mit Print on Demand. Researchers have used the fluids to create a new type of clutch.

electrorheologicaal

Smart Technology Limited – Electro-Rheological (ER) fluid

Automatic transmission Chain drive Clutch Constant-velocity joint Continuously variable transmission Coupling Differential Direct-shift gearbox Drive shaft Electorheological transmission Drive wheel Electrohydraulic manual transmission Electrorheological clutch Epicyclic gearing Fluid coupling Friction drive Gear stick Giubo Hotchkiss drive Limited-slip differential Locking differential Manual transmission Manumatic Parking pawl Park by wire Preselector gearbox Semi-automatic transmission Shift by wire Torque converter Transaxle Transmission control unit Universal joint.

Sign In Forgot password? The ER fluid is used as the coupling between the input and the output drive and driven members.

This process, called electrorheology, is reversible. The general problem on dynamics of the electrorheological clutch is formulated and studied.

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Approximate problem is formulated in a form of a problem with a delay. The effect of inclination on the development of slugging in channel flow.

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Citing articles via Web of Science 3. Abstract The general problem on dynamics of the electrorheological clutch is formulated and studied. This article is also available for rental through DeepDyve.

A problem on optimal control of acceleration or braking of the driven rotor is formulated and studied. The torque function is computed upon integrating the shear stresses non-linear functions of derivatives of the wlectrorheological over the surface of the driven rotor.

Scientists at the Hong Kong University of Science and Technology have developed a novel clutch based on a new class of electrorheological fluids.

Sign In or Create an Account. Litvinov; Dynamics of electrorheological clutch and a problem for non-linear parabolic equation with non-local boundary conditions, IMA Journal of Applied MathematicsVolume 73, Issue 4, 1 AugustPages —, https: Oxford University Press is a department of the Electrorhrological of Oxford.

Purchase Subscription prices and ordering Short-term Access To purchase short term access, please sign in to your Oxford Academic account above. Electrorheologicap motor Hybrid vehicle drivetrain Electric generator Alternator. See also [ edit ] Electromagnetic electrorheolofical External links [ edit ] HowStuffWorks has a detailed explanation of the working of a clutch. Don’t have an account? 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.

Fluid durability in a high speed electro-rheological clutch

Optimal control of electrorheological clutch described by nonlinear parabolic equation with nonlocal boundary conditions. Close mobile search navigation Article navigation. 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.

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It is proved the existence and the uniqueness of the solution of the initial and approximate problems and the convergence of the solutions of the approximate electrorheologocal to the solution of the initial problem as the parameter of delay tends to zero.

Related articles in Web of Science Clhtch Scholar. Clutches Automotive transmission technologies. Nonlocal nonlinear boundary condition is given on a part of the boundary, which corresponds to the driven rotor. In the case of braking, the energy production is maximized. Functions of time of the angular velocity of the driving rotor and of the voltages are considered to be controls.

It furthers the University’s objective of excellence in research, scholarship, and education by publishing worldwide. 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.

The properties of ER fluids make them ideal materials to transfer energy and control motion electronically, particularly in the automotive industry. Dynamics of electrorheological clutch and a problem for non-linear parabolic equation with non-local boundary conditions W. Views Read Edit View history.

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