Publication

Active Control of an Electromagnetic Suspension System

1993
Conference Papers

Abstract

Electromagnetic suspension system are commonly used in the field of high speed vhicles, tool machines, frictionless bearings and conveyor systems. This paper compares three different control strategies - i.e. the state control, the adaptive state control and the inverse problem method - on the basis of various criteria. The main novelty presented is the inverse problem strategy, largely used in the field of robotics, to linearize the transfer function between the airgap and its reference value. Also, an approach to the 3D electromagnetic suspension problem is outlined. The study is carried out in numerical simulation using the SIMULINK package. Experimental investigations on a test rig are in progress in order to valide the different strategies presented.

Official source

https://infoscience.epfl.ch/entities/publication/6a827791-291e-4e75-bc93-9afb511a3619

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1993
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/6a827791-291e-4e75-bc93-9afb511a3619

About this result

Related concepts (26)

Control theory

Control theory is a field of control engineering and applied mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a desired state, while minimizing any delay, overshoot, or steady-state error and ensuring a level of control stability; often with the aim to achieve a degree of optimality. To do this, a controller with the requisite corrective behavior is required.

Active suspension

An active suspension is a type of automotive suspension that uses an onboard control system to control the vertical movement of the vehicle's wheels and axles relative to the chassis or vehicle frame, rather than the conventional passive suspension that relies solely on large springs to maintain static support and dampen the vertical wheel movements caused by the road surface. Active suspensions are divided into two classes: true active suspensions, and adaptive or semi-active suspensions.

Transfer function

In engineering, a transfer function (also known as system function or network function) of a system, sub-system, or component is a mathematical function that models the system's output for each possible input. They are widely used in electronic engineering tools like circuit simulators and control systems. In some simple cases, this function can be represented as two-dimensional graph of an independent scalar input versus the dependent scalar output, called a transfer curve or characteristic curve.

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Active Control of an Electromagnetic Suspension System

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