Device for controlling a sheet-fed rotary printing machine having a plurality of drive motors
AssigneeHeidelberger Druckmaschinen AG
InventorsMalte Seidler, Detlef Strunk
Life of this patent
Estimating the term…
Abstract
A sheet-fed rotary printing machine includes at least two electric drive motors acting on a gearwheel train which mechanically connects a plurality of printing units to one another. A device for controlling the printing machine includes a control loop for each electric drive motor having a higher-frequency control element. At least one control loop has a low-frequency control element supplying an output signal picked up at the control loops in a predetermined ratio. A sheet-fed rotary printing machine having the device is also provided.
Claims14
In a sheet-fed rotary printing machine having a plurality of printing units, a gearwheel train mechanically interconnecting the printing units and at least two electric drive motors acting on the gearwheel train, a device for controlling the sheet-fed rotary printing machine, the device comprising:
- control loops each associated with a respective one of the electric drive motors;
- each of said control loops having a respective higher-frequency control element;
- and
- at least one of said control loops having a low-frequency control element;
- said low-frequency control element and said higher-frequency control element separating control signals into lower-frequency and higher-frequency components;
- and
- said low-frequency control element supplying said lower-frequency component as an output signal picked up at said control loops in a predetermined ratio.
A sheet-fed rotary printing machine, comprising:
- a plurality of printing units;
- a gearwheel train mechanically interconnecting said printing units;
- at least two electric drive motors acting on said gearwheel train;
- and
- a device for controlling the sheet-fed rotary printing machine, the device including control loops each associated with a respective one of said electric drive motors, each of said control loops having a respective higher-frequency control element, and at least one of said control loops having a low-frequency control element;
- said low-frequency control element and said higher-frequency control element separating control signals into lower-frequency and higher-frequency components:
- and
- said low-frequency control element supplying said lower-frequency component as an output signal picked up at said control loops in a predetermined ratio.
Dependencies are inferred from the claim text.