Patent application number | Description | Published |
20080257667 | Device For Decoupling an Attachment From a Moving Machine Element - The invention relates to a device for decoupling an attachment ( | 10-23-2008 |
20080258033 | Device for Placing an Object - The invention relates to a device ( | 10-23-2008 |
20090050782 | GUIDING DEVICE WITH MEASURING SCALE FOR GUIDING A MOVEABLE MACHINE ELEMENT OF A MACHINE - The invention relates to a guiding device ( | 02-26-2009 |
20090052819 | SPINDLE BEARING DEVICE AND CORRESPONDING BEARING METHOD - The invention relates to a spindle rotor which should be operated without vibrations. The orientation of the figure axis is accepted and the anchoring of the rotor bearing (SL) is configured such that the orientation of the geometric rotational axis adapts to the physical main axis of inertia. It is possible to produce said bearing in the form of an actively controlled bearing, whereby the orientation is measured and is dynamically carried out, but also in the form of bearing comprising passive elements which are associated with the external ring of the bearing and enable a correspondingly dynamic orientation of the bearing. Said device can also comprise a special damper (T) which dampens the vibrations of the bearing (SL). | 02-26-2009 |
20090166158 | Revolving Device for a Conveyor Chain or a Conveyor Belt - There is described a revolving device for a conveyor chain or a conveyor belt, wherein at least one magnet exerts an attracting or a repelling force on the conveyor chain and/or the conveyor belt in order, in particular, to reduce wear and tear during high speeds and to cushion vibrations. The magnetic flux is thereby concentrated in such a way by means of a first flux guide piece that said magnetic flux acts vertically upon an effective surface of a component of the conveyor chain and/or the conveyor belt. In interaction with a second flux guide piece, the return of the magnetic reflux is achieved by means of an additional component of the conveyor chain and/or conveyor belt. Thus the magnetic reflux does not occur by means of the first named component, and consequently an optimized exertion of force on the conveyor chain and/or conveyor belt results. | 07-02-2009 |
20090174270 | DEVICE FOR SAFEGUARDING AN UNINTERRUPTIBLE POWER SUPPLY OF A MAGNET BEARING IN THE EVENT OF FAILURE OF AN ELECTRICAL SUPPLY VOLTAGE - The invention relates to a device for safeguarding uninterrupted power supply of a magnetic bearing ( | 07-09-2009 |
20090200968 | Drive Apparatus and Method for Its Operation - A drive apparatus with at least one synchronous motor, a converter and a mechanical energy buffer able to be fed from an energy supply network, which, for converting mechanical energy into electrical current, includes a first asynchronous machine, and a method of operation for such a drive apparatus are specified, with which or in which the energy buffer, especially its first asynchronous machine is directly electrically connected via a switchover device to the at least one synchronous motor, so that the converter included in the drive apparatus is bypassed for such a switch position of the switchover device and the converter accordingly does not have to be designed for currents which flow in such a switch position of the switchover device. | 08-13-2009 |
20090261765 | SYNCHRONOUS MOTOR, ENCODERLESS MOTOR SYSTEM AND A METHOD FOR OPERATING AN ENCODERLESS MOTOR SYSTEM WITH A SYNCHRONOUS MOTOR - The invention relates to a synchronous motor ( | 10-22-2009 |
20090278019 | MACHINE HAVING A MACHINE ELEMENT THAT CAN BE MOVED ALONG A CROSSBEAM - The invention relates to a machine provided with a machine element ( | 11-12-2009 |
20090302699 | METHOD FOR MOUNTING A BODY - In a magnetic bearing arrangement, support coils are connected in series and can be fed with a current. By coupling a point connecting the two support coils to a voltage source, the support coils can be used as actuating elements and, by feeding the support coils with voltage pulses, the inductance of the support coils can be inferred which is an indication of the position of the body to be mounted. This provides for a position control arrangement. Using one and the same support coils, both a stably controlled load-bearing capacity can thus be produced and at the same time a position sensor can be replaced. | 12-10-2009 |
20090309454 | PIEZOELECTRIC ACTUATOR - A piezo actuator includes an adaptation element, which is configured to adapt the piezo actuator to a controller for inductive loads, particularly to a converter for actuating inductive loads. The adaptation element allows use of controllers or converters of numerical control systems, which normally are used for actuating servo motors. Therefore it is no longer necessary to provide specially designed hardware for the actuation of piezo actuators, but instead the above-mentioned controllers can be used. Furthermore, as a result of the adaptation element, the piezo actuators can be integrated in the bus of the numerical control system. This allows communication in real time via the NC bus. | 12-17-2009 |
20100092262 | MACHINE TOOL, AND METHOD FOR THE DAMPING OF OSCILLATORY MOVEMENTS OF A MACHINE ELEMENT OF A MACHINE TOOL - A machine tool includes a first motor, a gear, and a machine element which is movable in a direction of movement by the first motor via the gear. A second motor is provided to apply a force directly upon the machine element in the direction of movement of the machine element in the absence of an interposed gear between the second motor and the machine element. The second motor is constructed to operate in such a way that the applied force counteracts an oscillatory movement of the machine element in the direction of movement of the machine element. | 04-15-2010 |
20100181855 | MAGNETIC BEARING CONTROL DEVICE HAVING A THREE-PHASE CONVERTER, AND USE OF A THREE-PHASE CONVERTER FOR CONTROLLING A MAGNETIC BEARING - The invention relates to a magnetic bearing control device and the use of a three-phase converter for controlling a magnetic bearing. According to the invention, a three-phase converter ( | 07-22-2010 |
20130081914 | ACTIVE OSCILLATION DAMPER WITHOUT DIRECT ACCELERATION DETECTION - An active oscillation damper has a balancing mass which is movable relative to an oscillating mechanical structure. The control device then determines a compensation movement for the balancing mass based on a determined three-dimensional absolute motion of the mechanical structure. A balancing drive, arranged on the mechanical structure and acting on the balancing mass, is activated by the control device. The balancing mass is displaced by the balancing drive relative to the mechanical structure commensurate with the determined compensation movement. The measured values supplied to the control device include actual values of the balancing drive and/or a position of the balancing mass relative to the mechanical structure and/or at least one derivative with respect to time of the position of the balancing mass relative to the mechanical structure. The three-dimensional absolute motion of the mechanical structure is determined by the control device from the aforementioned values. | 04-04-2013 |
20130085607 | PROCESSING MACHINE WITH VIBRATION COMPENSATION OF MOVABLE MECHANICAL STRUCTURES - A control device of a processing machine actuates an axle drive of the processing machine commensurate with a reference displacement movement, displacing a mechanical structure of the processing machine accordingly. The control device determines an absolute movement of the mechanical structure in space and therefrom, taking into account the reference displacement movement of the mechanical structure, a compensation movement for a compensating mass damping a vibration of the mechanical structure. Arranged on the mechanical structure is a compensating drive which acts on the compensating mass. The control device actuates the compensating drive in accordance with the compensation movement, displacing the compensating mass relative to the mechanical structure and thereby damping the vibration of the mechanical structure. | 04-04-2013 |
20130121831 | DRIVE OF A TAIL ROTOR OF A HELICOPTER - The invention relates to a drive ( | 05-16-2013 |
20140339940 | METHOD FOR OPERATING A THREE-PHASE INVERTER OF A CONVERTER-FED MAGNETIC BEARING - In a method for operating a three-phase inverter of a converter-fed magnetic bearing, two coils are connected to respective outputs of the three-phase inverter at one end and are connected to each other and to a third output of the three-phase inverter at the other end. A variable control current is injected into the third output. A constant bias current flows between the respective outputs and thus serially through the two coils. The control current is divided among the two respective outputs so as to flow parallel through the two coils. This arrangement significantly reduces the effective current load of the three-phase inverter and significantly increases the slew rate of the control current. | 11-20-2014 |