Siemens Aktiengesellschaft

Horst Stiehler

Klaus Hertinger

Peter Bauer

Andreas Uhlich

Joachim Ebermann

Tom Tolkmitt

Curd Weber

Heino De Levie

Kay Grammatke

Dieter Schwarzbach

A method for controlling several master axes in a machine, for example a production machine includes the steps of defining profiles of desired values for a plurality of master axes, determining for each master axis a current desired value and also a current desired value for a slave axis using a logic combination rule, controlling a first drive in accordance with the current desired value of the slave axis, and if the dynamics controlling the first drive exceeds an upper dynamics limit, starting at the next clock pulse to modify determination of the current desired values for at least one of the master axes, and controlling the first drive with a reduced dynamics until the reduced dynamics falls below a lower dynamics limit.

Controlling a slave drive with dynamic determination of the dynamics of the master axis

The invention relates to a method for process-variable-dependent identification signal emission for a closed-loop and/or open-loop control program with cyclic sampling of process variables from a technical process. A threshold value crossing time (ts, ts) is determined from at least two previous samples (AT, AT, AT-AT) of a process variable (P). At this time, an identification signal can be triggered, which can call up a single-stage or multi-stage command sequence. The threshold value crossing time (ts-ts) can likewise be determined with the aid of a mathematical approximation function and the samples (AT, AT, AT-AT). A timing mechanism can be started in the predicted sampling cycle (Ato A) preceding the threshold value crossing (SD-SD) using a time difference (ZD-ZD) remaining until the threshold value crossing (SD-SD). The threshold value crossing time (ts-ts) is determined once again using a further, subsequent sample (AT, AT, AT-AT) and the approximation function, and the remaining time difference (ZD-ZD) of the timing mechanism is adapted once again if necessary.

Method for process-variable-dependent identification signal emission

The invention concerns a method and an apparatus for time-staggered generation of identifying signals by programmable automation components (AK , AK ) with a system time recorder (SZ). A user (A) or an automation component (AK , AK ) or a user program (AP) can register a time-staggered identifying signal (K) with an event manager (EV). The event manager (EV) controls a system time counter (SZ) and signals waiting events (E -E ) back to the user (A) or the automation component (AK , AK ) or the user program (AP). The event (E -E ) is thereby enabled and an identifying signal (K) is generated.

Method and apparatus for time-staggered generation of identifying signals

Growing community of inventors

Burgstaedt, Germany

Horst Stiehler