Abstract: The invention concerns a system operating unit (30) having a column (3) that is attachable by way of at least two supports (9, 10) to different points of a system housing (14). In the preferred embodiment, this column is attached laterally to the housing, the supports serving for attachment to the housing of the system. In addition, a retaining bracket (4) is connected to the column (3) in such a way that a horizontal deflection of the retaining bracket (4) about a vertical axis is possible.
Type:
Grant
Filed:
May 26, 2004
Date of Patent:
December 26, 2006
Assignee:
Leica Microsystems Semiconductor GmbH
Inventors:
Roland Hedrich, Karsten Urban, Joachim Wienecke
Abstract: An automatic control method is provided for a phenomenon in which a parameter Y varies as a function of a parameter X according to a course exhibiting a rise, an extremum and a fall, in which the value of the parameter X is automatically controlled to maintain the value of a parameter Y at an optimum value, including the following steps. Estimations or measurements (Xi, Yi) are determined for at least one pair of values in a coordinate system having an origin. Corresponding values are determined for the slope ?i of the straight line passing through the origin and through (Xi, Yi). Coefficients Ap are calculated by direct calculation or by a regression from a sufficient number of pairs with (?i, Xi) so as to model a variation curve ?i=f(Xi, Ap). A target value XTarget is calculated by using a predetermined Invariant “Invt”.