Etel S.a.

Michel Mathia

Vincent Very

Claude Froidevaux

Jacques-André Sudan

In a method for controlling three single-phase motors and moving a platform in a direction of the normal, the motors are controlled by one three-phase converter, so that a first motor is operated between a first phase and a second phase of the converter, and a series connection or parallel connection of a second and third motor is operated between a second phase and a third phase of the converter. A platform is adapted to perform this method.

Method for controlling three single-phase motors and moving a platform in a direction of the normal

In a method for optimizing control parameters, a transfer function of a transformer that includes a controller and a system to be controlled is ascertained experimentally. Quality criteria are derived from the transfer function of the transformer, the quality criteria being used for optimizing control parameters. Following a variation of the control parameters, a modified transfer function is calculated from the transfer function of the unmodified transformer without a new experimental identification.

Method for optimizing control parameters

A method is for analyzing a drive system, according to which a transfer function of a target system in the drive system is determined by applying noise signals to the drive system. Several noise signals, which cover different frequency ranges, are successively applied as an input signal. In this context, the intensity of the noise signals may be optimized in steps, as a function of the covered frequency range, in order to improve the result of the identification of a target system in the drive system.

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Couvet, Switzerland

Michel Mathia