Method for operating a system with drives, which are mechanically coupled together, and with a higher-level computer, and system

A method for operating a system having drives, that are mechanically coupled, and a higher-level computer, connected to the drives via a data-bus connection, the higher-level computer including controllers, each controller being biuniquely allocated to a respective drive, comprising:

• determining, in each drive, a respective actual quantity value;
• transmitting the respective actual quantity value to the higher-level computer via the data-bus connection;
• determining, by the higher-level computer, for each drive, a setpoint quantity value allocated to the respective drive;
• controlling, by the controller allocated to the respective drive, the actual quantity value of the respective drive to the setpoint quantity value of the respective drive, the controller determining as a control value a setpoint speed value allocated to the respective drive and transmitting the control value to the respective drive via the data-bus connection;
• supplying, to an individual controller of the respective drive, the respective actual speed value of an electric motor of the drive, determined in the drive;
• controlling, by the individual controller of the respective drive, the respective actual speed value to the respective setpoint-speed value transmitted by the higher-level computer to set a motor voltage and/or a motor current of the electric motor of the respective drive.

A method for operating a system having drives and a higher-level computer, each drive including a converter-supplied electric motor and acquisition device adapted to acquire a speed and/or a rotational frequency of a rotor of the electric motor, each converter including a controller adapted to control a respective actual speed value to a respective setpoint speed value by setting a motor voltage of the respective electric motor accordingly, comprising:

• determining, in the drive, a respective actual quantity value;
• transmitting the actual quantity value to the higher-level computer via data-bus connection;
• and
• determining, by a controller of the higher-level computer, the respective setpoint-speed value as a control value by controlling the respective actual quantity value to a respective setpoint quantity value, the respective setpoint quantity value being determined as a function of the actual quantity values;
• wherein the respective setpoint quantity values correspond to an averaged value of all actual quantity values and/or the respective setpoint quantity values correspond to a respective share in a sum of all actual quantity values.

A system, comprising:

• drives, that are mechanically coupled;
• and
• a higher-level computer, connected to the drives via a data-bus connection, the higher-level computer including controllers, each controller being biuniquely allocated to a respective drive;
• wherein the system is adapted to perform a method including:
• determining, in each drive, a respective actual quantity value;
• transmitting the respective actual quantity value to the higher-level computer via the data-bus connection;
• determining, by the higher-level computer, for each drive, a setpoint quantity value allocated to the respective drive;
• controlling, by the controller allocated to the respective drive, the actual quantity value of the respective drive to the setpoint quantity value of the respective drive, the controller determining as a control value a setpoint speed value allocated to the respective drive and transmitting the control value to the respective drive via the data-bus connection;
• supplying, to an individual controller of the respective drive, the respective actual speed value of an electric motor of the drive, determined in the drive;
• controlling, by the individual controller of the respective drive, the respective actual speed value to the respective setpoint-speed value transmitted by the higher-level computer to set a motor voltage and/or a motor current of the electric motor of the respective drive;
• and
• wherein no master-slave control is performed or performable by the system.

A system, comprising:

• method for operating a system having drives and a higher-level computer, each drive including a converter-supplied electric motor and acquisition device adapted to acquire a speed and/or a rotational frequency of a rotor of the electric motor, each converter including a controller adapted to control a respective actual speed value to a respective setpoint speed value by setting a motor voltage of the respective electric motor accordingly, comprising:
• determining, in the drive, a respective actual quantity value;
• transmitting the actual quantity value to the higher-level computer via data-bus connection;
• and
• determining, by a controller of the higher-level computer, the respective setpoint-speed value as a control value by controlling the respective actual quantity value to a respective setpoint quantity value, the respective setpoint quantity value being determined as a function of the actual quantity values;
• wherein the respective setpoint quantity values correspond to an averaged value of all actual quantity values and/or the respective setpoint quantity values correspond to a respective share in a sum of all actual quantity values.