Sick | Stegmann Gmbh

Sick Stegman Gmbh

Ulrich Armbruster

Josef Siraky

Massimo Francescon

Simon Stein

A feedback system for controlling a servo motor comprising at least one rotary angle sensor and at least one rotary speed sensor, wherein the rotary angle sensor supplies a measured rotary angle value to a computer, wherein the rotary speed sensor supplies a measured rotary speed value to the computer, the actual rotary speed values are the measured rotary angle values interpolated according to the integrated measured rotary speed values, and wherein at high rotary speeds, the actual rotary speed values are the calibrated measured rotary angle values, differentiated with respect to time, and at low rotary speeds, the actual rotary speed values are the measured rotary speed values.

Feedback apparatus and feedback method for controlling a servomotor

The invention relates to a process for digital, bidirectional data transmission between a processing unit and a position encoder, as based on the transmission of frames of a predetermined bit length, such that each frame is provided with at least an initial bit length for the transmission of data from the processing unit to the position encoder and at least a second bit length for the transmission of data from the position encoder to the processing unit; and such that the frame is provided with a time slot in which data is neither transmitted from the processing unit to the position encoder nor from the position encoder to the processing unit. In the time slot a triggering signal (external sync signal) is transmitted from the processing unit to the position encoder and this triggers the acquisition of position data. In the first bit length, a clock signal for synchronizing the processing unit and the position encoder is transmitted from the processing unit to the position encoder, and after the acquisition of position data triggered by the external sync signal, the acquired position data is transmitted from the position encoder to the processing unit. Between the transmission of two successive external sync signals at least one additional position-data request signal (internal sync signal) is transmitted from the processing unit to the position encoder, and this signal triggers another acquisition of position data, which is followed by the transmission of the acquired position data from the position encoder to the processing unit.

Process for digital, bidirectional data transmission

The invention relates to a method for synchronizing a bi-directional transmission of data between a transmitter and a receiver based on the transmission of frames () having a predefined bit length, with a predefined first bit length () being provided in each frame () for the transmission of data from the transmitter to the receiver and a predefined second bit length () for the transmission of data from the receiver to the transmitter, with a trigger pulse () being sent to the receiver parallel to and independently from the transmission of the data between the transmitter and receiver, which pulse triggers a data collection process at the receiver, wherein the frame () has a time slot (), during which no information is transmitted from the transmitter to the receiver and also not from the receiver to the transmitter, and wherein the trigger pulse () is transmitted from the transmitter to the receiver during this time slot ().

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Donaueschingen, Germany

Ulrich Armbruster