Patent application number | Description | Published |
20110030360 | HYDRAULIC SYSTEM COMPRISING A HYDROSTATIC PISTON MACHINE - A hydraulic system includes a hydrostatic piston machine having a plurality of valves that can be actuated using an actuator depending on the motion of the pistons and a control unit for activating the actuators. The switching points at which the valves are actuated are dependent on operating conditions, so that the expected functionality and the essential properties of the hydrostatic piston machine are ensured under different operating conditions. | 02-10-2011 |
20110031422 | VALVE-CONTROLLED POSITIVE-DISPLACEMENT MACHINE - In a valve-controlled hydrostatic positive-displacement machine and a method for its control, the positive-displacement machine having a plurality of cylinder-piston units which are activated or deactivated via electrically or electro-hydraulically actuated low-pressure valves and via high-pressure valves for setting a delivery or absorption volume flow of the positive-displacement machine, if the volume flow is essentially unchanged, the activation and deactivation of the cylinder-piston units is effected in accordance with one of a plurality of activation patterns valid for the particular volume flow. | 02-10-2011 |
20110146256 | CONTROL ARRANGEMENT FOR A VALVE-CONTROLLED HYDROSTATIC DISPLACEMENT UNIT - A control arrangement for a valve-controlled hydrostatic displacement contains a control unit for controlling the valve-controlled hydrostatic displacement machine, a sensor electronics portion for detecting sensor data of a power electronics portion and of the valve-controlled hydrostatic displacement machine, and the power electronics portion for furnishing a current necessary for operating the valve-controlled hydrostatic displacement machine. The control unit, the sensor electronics portion, and the power electronics portion are connected, as are the sensor electronics portion, the power electronics portion, and the valve-controlled hydrostatic displacement machine, which in turn are each connected to one another via bidirectional communications lines. The functionalities of the control unit, the sensor electronics portion, the power electronics portion, and the valve-controlled hydrostatic displacement machine are assigned, separately from one another, to these units and portions, and data and information are capable of being exchanged between these units and portions. The control unit is arranged for detecting information from the sensor electronics portion, the power electronics portion, and/or the valve-controlled hydrostatic displacement machine, centrally in only the control unit, and reacting to information which represents a changed situation and, in an interacting fashion, adapting the sequence control for the valve-controlled hydrostatic displacement machine. | 06-23-2011 |
20110146260 | HYDRAULIC SYSTEM HAVING A HYDROSTATIC, VALVE-CONTROLLED PISTON ENGINE - The invention relates to a hydraulic system, having a hydrostatic, valve-controlled piston engine with a plurality of valves actuatable by an actuator as a function of the motion of the pistons, and with a control unit for triggering the actuators, which is arranged for generating an electrical attraction current in a first time segment and a maintenance current in a second time segment. The object of the invention is for the valves to switch with quick reactions and function safely, so that the expected functionality and safe operation of the hydrostatic piston engine under various operating conditions is ensured. This is attained in that the control unit includes a current regulating device, which triggers the actuators in current-regulated fashion. | 06-23-2011 |
20110149457 | ELECTRONIC TRIGGERING UNIT FOR AN ELECTROMAGNETICALLY ACTUATED VALVE FOR OPERATING A HYDROSTATIC DISPLACEMENT UNIT - An electronic triggering unit for an electromagnetically actuated valve is disclosed, in which the valve is provided in particular for a hydrostatic displacement unit. The electronic triggering unit has a first switching device, which during the attraction phase of the valve applies a first voltage to its coil, which voltage is higher than the operating voltage of the electronic triggering unit. This first voltage is obtained from the operating voltage by means of a voltage-increasing circuit. A second switching device, during the maintenance phase of the valve, applies a second voltage, which corresponds approximately to the operating voltage, to its coil. According to the invention, the voltage-increasing circuit is a booster circuit, which in response to a corresponding trigger signal charges a buffer memory to the increased first voltage. | 06-23-2011 |
20110214420 | DIAGNOSIS MANAGEMENT SYSTEM AND DIAGNOSIS MANAGEMENT METHOD FOR A VALVE-CONTROLLED HYDROSTATIC DISPLACEMENT UNIT - A diagnosis management system for a hydrostatic displacement unit, including a control unit for controlling a drive motor, a hybrid control unit for controlling the motor control unit on the basis of at least one desired acceleration signal and one desired deceleration signal for the drive motor, a gear control unit for controlling the motor control unit on the basis of at least signals derived from a continuously variable gear, and a control unit for a digital displacement unit, for controlling at least one pump motor as the digital displacement unit is disclosed. The control unit for a digital displacement unit has at least one diagnostic interface, which detects operating values and/or operating states in order to detect system errors in the pump motor, a sensor unit portion associated with the pump motor, and/or a power electronics portion associated with the pump motor; and at least one calculation portion, which preprocesses the operating values and/or operating states detected by the diagnostic interface. The at least one diagnostic interface and the at least one calculation portion are disposed for operating in a first system direction for diagnosis and for determining a correction of incident system errors, and in a second system direction for diagnosis and/or for performing the correction of incident system errors. A diagnosis management method can be performed by the diagnosis management system. | 09-08-2011 |
20140147293 | HYDRAULIC MACHINE WITH ELECTRONICALLY CONTROLLED VALVES - A hydraulic machine includes a number of piston/cylinder units which are each controlled by valves positioned upstream and downstream. The valves are in turn activated by an electronic regulator to switch the hydraulic machine selectively into a pump operating mode and a motor operating mode. The regulator selectively switches the individual piston/cylinder units or unit groups separately from one another into individually selectable operating modes as a function of certain regulating variables. | 05-29-2014 |
Patent application number | Description | Published |
20100057665 | METHOD AND SYSTEM FOR ENHANCING COMPUTER OBJECT RULES AND CATALOGS - A method, a machine-readable storage medium and a system are provided for enhancing computer rules in a computer application. In an embodiment, a rule is accessed from a set of computer rules provided by a computer application. The rule includes a number of fields, e.g., an attribute field and an enhancement type field. In response to receiving an input attribute and an input enhancement type, the rule is updated in the set of computer rules. The updated rule is implemented and operation of the updated rule in the computer application is altered based on the inputs. | 03-04-2010 |
20100057666 | METHOD AND SYSTEM FOR ENHANCING AND MERGING COMPUTER OBJECT RULES - A method, a machine-readable storage medium and a system are provided for revising content in a computer rule set. The revisions may be made by an issuer of content. In an embodiment, it is determined whether a difference exists between content data in a production table corresponding to a computer rule set and enhanced content data in an enhanced data table. If a difference is determined to exist, the content data is read from the production table and the enhanced content data is read from the enhanced data table. The enhancement data is identified as that assigned to the first issuer. Whether the rule enhanced in the computer rule set is allowed to be revised is confirmed. Based on the results of the determining and confirming, the enhanced data from the enhanced data table is incorporated into the production data table to provide a revised computer rule set. | 03-04-2010 |
20130091342 | TRACING SOFTWARE EXECUTION OF A BUSINESS PROCESS - Various embodiments of systems and methods to trace an execution of a business process are disclosed. Business rules and corresponding business objects required to execute the business process are identified and rendered to receive an input. Based upon detecting a trigger to execute the business process, the business rules and the corresponding business objects are processed to compute a process-resultant for the business process. A process-path of the computed process-resultant is traced by tracing key-strings corresponding to the business objects involved in computing the process-resultant, to generate a trace-resultant. The trace-resultant is parsed by determining versioned business objects and business information of the key-strings, to derive a business definition for the traced business objects involved in computing the process-resultant. Based upon the business definition, a comprehensive trace-map comprising a compilation of the process-resultant to execute the business process is generated. | 04-11-2013 |
20130117318 | Rule Type Column in Database - A data definition language (DDL) may be extended by a new column type: a rule type column. Database rules are modeled using patterns (e.g. decision table, decision tree, or formula) specifying rule content through accessible user interfaces instead of programming constructs. A rule type column can be created using the DDL statements to define its storage type (transient or permanent), and/or whether it is generic or non-generic. A transient rule column will be populated only when a query is performed. A non-transient rule column will be populated when an insert is performed, and may be re-triggered during an update. A generic rule column allows a rule to be defined each time an insert is performed (e.g. each row might trigger a different rule). A non-generic rule column allows initial definition of one rule statically for all rows. The system of rules evaluation can be integrated with the language processor. | 05-09-2013 |
20130117323 | Database Queries Enriched in Rules - Embodiments allow complex conditional statements to be considered in formulating database queries. Business rules are modeled based upon ready-to-use abstract structures such as decision trees, decision tables, or formulas. A query to the database is then posed by a user. The query includes a system of rules evaluation activating a built-in processing function provided with a unique identifier of the rule. This function processes the rule, taking the input data set from the context of the application level language (e.g. SQL) in which the database was created. This rule-processing capability may be implemented as a functional mechanism similar to the standard aggregation functions (e.g. SUM, AVG, MAX, MIN), rather than by extending the application level language itself. | 05-09-2013 |