摘要:
A method and a circuit are provided for the continuous detection of a line break in a full bridge controlling an inductive load. When the full bridge is switched off or on, a pre-determinable switching device of the circuit is switched first, and then a potential applied to a connection between the switching device and the load is tapped. The tapped potential is then compared with the ground potential when the switching device is connected to the supply potential, or with the supply potential when the switching device is connected to the ground potential. A line break is then determined when the two compared potentials are not different in the free running state thereof.
摘要:
A circuit configuration providing a diagnostic signal for a power switching device which switches a load has a test circuit, a filter device, a validation device, and a coding device. The test circuit tests the power switching device and generates error symptoms for characterizing error types of different priorities. The filter device, depending on an activation signal activating the power switching device, provides a validity signal for the generated error symptoms. The validity signal specifies the validity of the corresponding error symptom in each case. The validation device validates a generated error symptom depending on the associated validity signal in each case and validates the validated activation signal and from this generates a group of is states and the associated complementary states. The coding device codes the states and complementary states depending on the priorities of the error types assigned to the states and complementary states. The diagnostic signal is formed from the coded states and complementary states.
摘要:
The invention relates to a method for electrical discharge machining of electrically non-conductive material in which a layer of an electrically conductive substance is applied as an auxiliary electrode on the electrically non-conductive material. Said method is characterized in that the electrically conductive substance is chemically converted by oxidative heat treatment after electrical discharge machining.
摘要:
An integrated circuit has a control circuit (2) for a power field-effect transistor (3), wherein the integrated circuit has a first input (202) for receiving a control signal (CE) and an output to switch the field-effect transistor (3) on or off. The control circuit further has a driver circuit for providing a voltage level at the output in response of the control signal. A second input is provided for receiving a configuration signal, the configuration signal for configuring the voltage level being provided by the driver circuit in response to the control signal.
摘要:
The operating voltage is monitored in a microcontroller having associated output stages which are used to control components. In the case of over-voltage, the output stage is disconnected. Two technology-related, voltage monitoring devices working in different operating voltage ranges are provided. Due to the combination thereof, a highly precise disconnection threshold and a greater area for the operating voltage, which is to be monitored, can be obtained. If a malfunction of an over-voltage occurs, the output stages can be disconnected in a reliable manner.
摘要:
The invention relates to an automation system having a number of objects to to be controlled, wherein the automation system comprises a framework based controller (21) for controlling basic functions (23) of at least one object of the number of objects by means of object-specific functional units (25), wherein the controller (21) is configured independently of the object, and comprises standardized interfaces (26) for the communicative incorporation of the object-specific functional units (25) by means of preconfigured functional requests, wherein each functional unit (25) is associated with at least one of the objects and configured for actuating the respective basic function (23) of the respectively associated object by means of object-specific control functions, wherein each object of the number of objects may be virtualized in the controller (21) by means of the associated object-specific functional units (25), and the objects of the number of objects respond and can be controlled by means of the object-specific functional units (25) during at least one operating state of the automation system exclusively by the framework based controller (21), and each of the functional units (25) comprises one simulation module having at least one simulation function integrated in the respective functional unit (25), and may optionally be configured for carrying out the object-specific control function or for carrying out the at least one simulation function. The invention further provides a method for testing an automation system having a framework based controller, and a method for the framework based controlling of a respective automation system.
摘要:
The invention relates to an automation system having a number of objects to to be controlled, wherein the automation system comprises a framework based controller (21) for controlling basic functions (23) of at least one object of the number of objects by means of object-specific functional units (25), wherein the controller (21) is configured independently of the object, and comprises standardized interfaces (26) for the communicative incorporation of the object-specific functional units (25) by means of preconfigured functional requests, wherein each functional unit (25) is associated with at least one of the objects and configured for actuating the respective basic function (23) of the respectively associated object by means of object-specific control functions, wherein each object of the number of objects may be virtualized in the controller (21) by means of the associated object-specific functional units (25), and the objects of the number of objects respond and can be controlled by means of the object-specific functional units (25) during at least one operating state of the automation system exclusively by the framework based controller (21), and each of the functional units (25) comprises one simulation module having at least one simulation function integrated in the respective functional unit (25), and may optionally be configured for carrying out the object-specific control function or for carrying out the at least one simulation function. The invention further provides a method for testing an automation system having a framework based controller, and a method for the framework based controlling of a respective automation system.
摘要:
A method for detecting the state of a load device which can be connected to a switching connection, wherein the switching connection can be coupled to, and decoupled from, a predefined switching potential. A voltage drop across the switching connection is used as a basis for detecting whether the load device is connected to the switching connection, the load device is not connected to the switching connection or there is a short circuit between the switching connection and a first or a second switching potential. An additional current source is connected to the switching connection at the same time as the switching connection is decoupled from the predefined switching potential.
摘要:
A method for detecting the state of a load device which can be connected to a switching connection, wherein the switching connection can be coupled to, and decoupled from, a predefined switching potential. A voltage drop across the switching connection is used as a basis for detecting whether the load device is connected to the switching connection, the load device is not connected to the switching connection or there is a short circuit between the switching connection and a first or a second switching potential. An additional current source is connected to the switching connection at the same time as the switching connection is decoupled from the predefined switching potential.
摘要:
A circuit for controlling an inductive load, e.g. of a fuel injection valve, includes supply terminals for supplying a voltage, output terminals for connecting the load, and a detection device which is connected to at least one of the output terminals and is used for detecting the point in time at which the operation of the load is discontinued and/or detecting at least one fault case during a non-operational phase of the load. In order to render the detection process more reliable while using less circuitry, the detection device encompasses a current mirror with a first current source and a second current source. The current first is connected to one of the two output terminals during a detection phase. The current supplied by the second current source is evaluated as a signal of the detected result.