Patent application number | Description | Published |
20090150846 | INTELLIGENT TIMING ANALYSIS AND CONSTRAINT GENERATION GUI - A system generally including a clock structure analysis tool, a static timing analysis tool and a waveform tool is disclosed. The clock structure analysis tool may be configured to generate a simplified clock structure for a clock signal in a complex clock structure in a design of a circuit. The static timing analysis tool may be configured to generate a plurality of results for a plurality of intermediate signals in the simplified clock structure in response to a static timing analysis of the design. The waveform tool may be configured to generate a first representation in a graphical user interface format of the intermediate signals and the results. | 06-11-2009 |
20100050142 | SPECIAL ENGINEERING CHANGE ORDER CELLS - A method for correcting a plurality of violations in a circuit design and new cells used in the method are disclosed. The method generally includes the steps of (A) implementing a first engineering change order in the circuit design to correct a first of the violations, (B) implementing a second engineering change order with a special cell to correct a second of the violations, the special cell having a plurality of interfaces available for a signal path associated with the second violation, each of the interfaces having a characteristic appropriate to correct the second violation, each of the characteristics having a different performance and (C) routing the signal path to one of the interfaces to fix the second violation. | 02-25-2010 |
20100229141 | TIMING VIOLATION DEBUGGING INSIDE PLACE AND ROUTE TOOL - A storage medium for use in a computer to develop a circuit design. The storage medium recording a software tool that may be readable and executable by the computer. The software tool generally includes the steps of (A) receiving a first user input that identifies a specific cell of a plurality of existing cells in the circuit design, the specific cell having a timing characteristic, (B) generating a replacement display corresponding to the specific cell, the replacement display comprising a plurality of alternate cells suitable to replace the specific cell, each of the alternate cells having a different value associated with the timing characteristic of the specific cell, (C) receiving a second user input that identifies a replacement cell of the alternate cells and (D) automatically generating a first engineering change order to replace the specific cell with the replacement cell. | 09-09-2010 |
20120198407 | AUTOMATION OF TIE CELL INSERTION, OPTIMIZATION AND REPLACEMENT BY SCAN FLIP-FLOPS TO INCREASE FAULT COVERAGE - A method for designing an integrated circuit is disclosed. The method generally comprises the steps of (A) splitting a design layout of the integrated circuit into a plurality of tiles, (B) adding a plurality of tie-to cells to the design layout, wherein at least one of the tie-to cells generating a tie-to signal at a particular logical level is added into each of the tiles having at least one gate with an input fixed to the particular logical level and (C) routing the tie-to signal to each of the inputs within each of the tiles. | 08-02-2012 |
20130346932 | INTELLIGENT TIMING ANALYSIS AND CONSTRAINT GENERATION GUI - A system generally including a clock structure analysis tool, a static timing analysis tool and a waveform tool is disclosed. The clock structure analysis tool may be configured to generate a simplified clock structure for a clock signal in a complex clock structure in a design of a circuit. The static timing analysis tool may be configured to generate a plurality of results for a plurality of intermediate signals in the simplified clock structure in response to a static timing analysis of the design. The waveform tool may be configured to generate a first representation in a graphical user interface format of the intermediate signals and the results. | 12-26-2013 |
Patent application number | Description | Published |
20100160104 | EPICYCLIC GEARBOX FOR A WIND POWER INSTALLATION - A first planet stage of an epicyclic gearbox revolves in a gearbox housing and includes a planet support having two interconnected side pieces. Planet gears are borne in the planet support via planet gear bearings and engage a central sun gear shaft and a hollow gear secured to the gearbox housing. A first channel has one end connected to an oil supply in communication with an oil feed pump and passes through a gearbox housing wall, and another end connected via second channels, passing through one side piece of the planet support, to third and fourth channels, passing through the shafts of the planet gears and open to the planet gear bearings. The first channel passes through an insertion apparatus secured in the gearbox housing and. The first planet stage is complemented by a second planet stage with a second planet support, second planet gears and a second sun gear shaft, with the insertion apparatus including a radial stator with an axial bush arranged radially between the first and second planet supports. | 06-24-2010 |
20120108380 | PLANETARY GEAR MECHANISM FOR A WIND POWER PLANT - A planetary gear mechanism for a wind power plant includes a sun gear, an internal gear and a planetary carrier with planetary gears supported by radial and axial slide bearings. The radial slide bearings include a sleeve made of a slide bearing material and attached as an inner ring to a planetary gear shaft or mounted as an outer ring in a bore in a planetary gear. An outer bearing ring cooperating with the inner ring is formed by the bore in the planetary gear, or an inner bearing ring cooperating with the outer ring is formed by the planetary gear shaft. A slide bearing material of a first bearing element of the axial slide bearings is applied between a planetary carrier cheek and an end side of a planetary gear. The end side of the planetary gear or the planetary carrier cheek forms a corresponding cooperating second bearing element. | 05-03-2012 |
20120125150 | GEARBOX FOR A WIND TURBINE - A gearbox includes an input shaft connected to a rotor hub, an output shaft connected to a generator, and a first gear wheel rotation-locked to the input shaft and arranged inside a gearbox housing. A second gear wheel arranged inside the gearbox housing and meshing with the first gear wheel or coupled thereto via one or more additional gear wheels is rotation-locked to the output shaft. A flange radially surrounds the input shaft and/or the output shaft and has a circumferential groove on a side facing the input shaft and/or output shaft. An annular tubular sealing element made from an elastic material is fixed in the circumferential groove and can be expanded by an increase in the internal pressure. An intermediate space between the input shaft and/or output shaft and the circumferential groove is thus completely sealed by the sealing element when expanded. | 05-24-2012 |
20120160037 | GEAR MECHANISM FOR INDUSTRIAL APPLICATIONS OR WIND POWER PLANTS - The invention relates to a gear mechanism comprising at least one drive shaft and at least one output shaft, which enter a gear mechanism housing through a respective opening. The drive shaft and/or the output shaft comprise a magnetically or optically coded section in the region of the respective opening. The coding in said section may be changed by the effect of a torque or a force on the drive shaft or output shaft. Moreover, at least one gear wheel connected to the drive shaft and at least one gear wheel connected to the output shaft are provided that are directly or indirectly engaged with one another. In addition, the gear mechanism according to the invention comprises at least one scanning unit for detecting the magnetic or optical coding of the drive shaft or output shaft in a contact free fashion.; The scanning unit is disposed in a housing cover surrounding the magnetically or optically coded section of the drive shaft or output shaft and connected electrically to an analysis unit for detecting an overload of the gear mechanism. | 06-28-2012 |
20130088016 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system has a transmission unit comprising at least one planet wheel stage, which has a hollow wheel, several planet wheels, a planet carrier and a sun wheel. Furthermore, a first shaft associated with the transmission unit is provided, which has a coupling flange that can be connected to a work machine shaft or rotor shaft and is mounted via the planet carrier. The transmission unit and a motor unit or generator unit connected to a second shaft of the transmission unit are enclosed by a gear housing which has a cardanic circumferentially symmetric or partially symmetric suspension for connection to a supporting structural element of the wind turbine. | 04-11-2013 |
20130095972 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system has a transmission unit with planetary gear stage and a first shaft associated with a planetary carrier and having a coupling flange connectable to a machine or rotor shaft. The transmission unit and a motor/generator unit includes a rotor connected with a rotation-lock to a hollow rotor shaft which is connected to a second shaft of the transmission unit and enclosed by a gearbox housing. A coupling is arranged radially between the second shaft and the hollow rotor shaft. A gearbox housing support with a hollow cylindrical extension is arranged between the transmission unit and the motor/generator unit. The cylindrical extension concentrically encloses an end section of the second shaft and forms a bearing seat for a bearing arrangement disposed radially between the second shaft and the cylindrical extension. The hollow cylindrical extension is concentrically enclosed by the rotor and the hollow rotor shaft. | 04-18-2013 |
20130165288 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system has a gear unit with planetary gear stage with a planetary gear carrier. A first shaft associated with the gear unit has a coupling flange connectable to the shaft of a working machine or a rotor and is supported by the planetary gear carrier. The gear unit and a motor/generator unit connected to a second shaft of the gear unit are enclosed by a gearbox. The motor/generator unit additionally includes a rotor connected to a hollow rotor shaft with a rotation lock. An electrically isolating, detachable flange connection is disposed between the rotor shaft and the second shaft, with the gear-side end of the detachable flange connection connected to a hollow gear shaft. A gearbox stub which concentrically encloses a gear-side end section of the gear shaft is disposed between gear unit and motor or generator unit and forms a bearing seat for the second shaft. | 06-27-2013 |
20130172141 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system for a wind turbine includes a transmission unit with a planet wheel stage. A coupling flange on a first shaft of the transmission unit can be connected to a driven machine shaft or rotor shaft which is mounted above a planet carrier. The transmission unit and a motor/generator unit connected with a second shaft of the transmission unit are enclosed by a gear case. A rotor of the motor/generator unit is connected to a hollow rotor shaft which surrounds an end section of the second shaft and is connected to the end section via an interior coupling or clamping connection. A connecting-piece is arranged between the transmission unit and the motor/generator unit, and concentrically surrounds a transmission-side end section of the rotor shaft, forming a bearing seat for the rotor shaft, which also supports the second shaft of the transmission unit. | 07-04-2013 |
20140302957 | DRIVE SYSTEM FOR A WIND TURBINE - A drive system having an integrated transmission and motor/generator unit for a wind turbine includes a transmission output shaft designed as a hollow shaft, which receives a sun shaft of an output-side planetary gear stage and is connected thereto. The transmission output shaft comprises a transmission-side end section of an insert shaft which is concentrically arranged within a rotor hollow shaft. The transmission output shaft additionally has a bearing for receiving radial and axial forces. The motor/generator unit has two dedicated bearings. One bearing thereof is a transmission-side bearing. In addition, a rear-side generator bearing is provided. | 10-09-2014 |
20140349815 | Gearbox for industrial applications or wind power plants - The invention relates to a gearbox having a sensing device ( | 11-27-2014 |