Abb Patent Gmbh

Abb Technology Ag

Abb Ag

Heiko Kresse

Andreas Stelter

Ralf Schaeffer

Stefan Tabelander

Thomas Kleegrewe

Andreas Wahlmann

Martin Dahl

The invention relates to an automation device, in which a plurality of spatially distributed functional units communicate with one another by means of a common transmission protocol. The device has a microcontroller () which has at least one associated clock generator () and a memory unit () and which is connected at least to a data source (), which is designed to output a data byte stream to be transmitted. A first program for conversion of a data byte stream to be transmitted to a sequence of sample values of an adequate frequency-modulated line signal, and a second program for identification of a frequency-modulated line signal and for its sequential conversion to a received data byte stream are stored in the memory unit (), with these programs being associated with the microcontroller (). The first and the second program can be run alternately.

Automation device operable to convert between data byte streams and frequency modulated line signals

The invention relates to an automation device, with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data source (), which is designed to output a data bit-stream to be transmitted.

Automation device

The disclosure relates to a method and device for operating an electropneumatic valve for driving a pneumatic actuator drive to activate fittings in automation systems. The valve has at least one electropneumatic transducer and a pneumatic booster. The pneumatic booster has at least one 3/3 way valve with a blocking center position for optionally connecting an air inflow duct or an air outflow duct to a connecting duct, which connects to the actuator drive. The ducts are activated as a function of an electrical actuation signal by the electropneumatic transducer. At least one position of the 3/3 way valve with a blocking center position is measured and a correction value of a variable of the actuation signal is determined based on the measured value and the electrical actuation signal.

Method and device for operating an electropneumatic valve

A method and an electronic device are disclosed for testing drive parameters of an electropneumatic valve which is inserted into a closed control loop for position regulation of a switching element of a pneumatic actuating drive for a fitting which can be operated thereby. The electropneumatic valve can be driven by an alternating signal of a specific amplitude, such that the control loop will oscillate about a nominal position value to be regulated by alternate ventilation and venting of the valve, such that hysteresis present in the pneumatic actuating drive can be overcome. The trajectory of the position oscillation that is produced can, at the same time, be detected at the switching element using sensors, from which a characteristic of the control loop for the selected amplitude can be determined to confirm whether an opening point which is suitable for the control loop has been found.

Method and device for testing drive parameters of an electropneumatic valve for a pneumatic actuating drive

The disclosure relates to an arrangement for contactlessly measuring a position using a magnetoresistive sensor, the displacement-proportional transfer characteristic of which has a plurality of ranges which are suitable for a position measurement and associated characteristic curve sections of which have both positive and negative gradients. The arrangement can be included in a position regulator which has control electronics which, with the aid of a microcontroller, receive one or more input signals and output actuating signals for controlling the actuating drive. A method is also disclosed for operating the arrangement. For example, to uniquely associate the direction of movement of the displacement pick-off shaft with the effective direction of the drive, at least one range sensor for detecting the characteristic curve range of the magnetoresistive measuring system, which is in the form of a magnetoresistor potentiometer, in which the position is measured, is proposed. The range sensor can be connected to the control electronics. The activity of each range sensor can be assigned a sign for the gradient of the characteristic curve section of the measuring system in which the position is measured, which sign can be used to infer the effective direction of the actuating drive.

Arrangement for contactlessly measuring a position using a magnetoresistive sensor, and method for operating the arrangement

A method and an electronic device for compensation of the hysteresis of a pneumatically driven fitting having an electropneumatic valve. The electropneumatic valve is driven by a position regulator and is used in a closed control loop for position regulation of a switching element of an pneumatic actuating drive for operation of the fitting. Hysteresis of the pneumatically driven fitting is compensated for by the position regulator via at least one hysteresis correction factor. The control-engineering compensation for the hysteresis is carried out separately for a first basic case of starting or reversing a switching element and for a second basic case of continuous movement of the switching element, such that a dominant static friction is compensated for in the first basic case and the dominant sliding friction is compensated for in the second basic case, and the pneumatic actuating drive operates the switching element matched thereto.

Method and electronic device for compensation of the hysteresis of pneumatically driven fittings

The invention relates to an automation device, with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data source (), which is designed to output a data bit-stream to be transmitted. A sequential sequence of equidistant samples of a trapezoidal time profile is stored in the memory unit (), such that it can be called up, in such a manner that the samples can be output either using the clock of the first clock generator or using the clock of the second clock generator, depending on the data bit-stream.

The disclosure relates to a method for testing the functionality of armatures, e.g., of safety armatures, in process control systems which are assigned a test device for implementing partial stroke testing and which are connected to a control device, which brings about actuation, in accordance with regulations, of the safety armature in an emergency. Prior to the start of the implementation of the partial stroke testing, a request signal is transmitted from the test device to the control device which is answered by the control device with an enable signal, the enable signal being issued as a function of the current process sequence at the armature.

Method for testing the functionality of armatures

The invention relates to an automation device (), with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data source (), which is designed to output a data bit-stream to be transmitted.

An automation device is disclosed, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which has a group of associated input/output connections which are connected to a resistor network. The resistances of the resistors follow a sequence, the resistance respectively being doubled from the less significant to the next most significant bit. Each input/output connection is actively switched to the associated logic level in order to output a first logic state and is connected as a high-impedance input in order to output the inverse, second logic state.

Common transmission protocol system for an automation device

The invention relates to an automation device, with which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data sink (), which is designed to accept a received data bit-stream.

Automation device using FSK modulation

The invention relates to an automation device ('), in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data source (), which is designed to output a data bit-stream to be transmitted.

The invention relates to an automation device, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (), which is assigned at least one clock generator () and one memory unit (), and which is connected at least to one data source (), which is designed to output a data bit-stream to be transmitted. A sequential sequence of equidistant samples of a sinusoidal time profile is stored in the memory unit (), such that it can be called up, in such a manner that the samples can be output using either the clock of the first clock generator or the clock of the second clock generator, depending on the data bit-stream.

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Obernkirchen, Germany

Heiko Kresse