Patents by Inventor Bernd Quaschner

Bernd Quaschner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8183809
    Abstract: A drive device for an electric motor is provided. The drive device decides based on signals it receives from outside whether it is monitoring an actual value of the electric motor with respect to the adherence to an actual value condition (monitoring operation). During monitoring operation, the drive device causes the motor to be disconnected from a power supply if the actual value does not adhere to the actual value condition. Via a communication connection, the drive device provides a drive control unit with first information, which reveals whether the drive device is in the monitoring operating mode. The drive device provides the drive control unit with second information, which reveals what the actual value condition is. Based on the first information, the drive control unit examines whether the drive device is in the monitoring operating mode. If this is the case, the drive control unit, based on the second information, determines what the actual value condition is.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 22, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Raimund Kram, Rolf-Dieter Pavlik, Bernd Quaschner
  • Publication number: 20100001676
    Abstract: A drive device for an electric motor is provided. The drive device decides based on signals it receives from outside whether it is monitoring an actual value of the electric motor with respect to the adherence to an actual value condition (monitoring operation). During monitoring operation, the drive device causes the motor to be disconnected from a power supply if the actual value does not adhere to the actual value condition. Via a communication connection, the drive device provides a drive control unit with first information, which reveals whether the drive device is in the monitoring operating mode. The drive device provides the drive control unit with second information, which reveals what the actual value condition is. Based on the first information, the drive control unit examines whether the drive device is in the monitoring operating mode. If this is the case, the drive control unit, based on the second information, determines what the actual value condition is.
    Type: Application
    Filed: December 14, 2007
    Publication date: January 7, 2010
    Inventors: Raimund Kram, Rolf-Dieter Pavlik, Bernd Quaschner
  • Publication number: 20080190166
    Abstract: In one aspect a device to simplify, and to reduce the costs of, the error-protected detection of the measured values in the control unit, without reducing the error protection of the system is provided. The device includes a pick-up device for detecting measuring signals. Independently operating evaluation devices are provided for the redundant determination of measured values from the measuring signals of the pick-up device. The data is transmitted to the control unit by means of error-protected transmission devices. A first evaluation device is used to determine a measured value, and a second evaluation device is used to determine a less precise, coarse comparison value. The device is also used to establish the accuracy of the measured value by comparing the value with the comparison value.
    Type: Application
    Filed: April 26, 2005
    Publication date: August 14, 2008
    Inventors: Ulrich Hahn, Andreas Kuhn, Christoph Nolting, Bernd Quaschner, Johannes Welker
  • Patent number: 6677721
    Abstract: The invention makes it possible to execute the pre-control and the fine interpolation in the drive (A) in the fast drive clock (tDR) with a slower path pre-setting in the clock (tNC) of the NC. For this purpose, in each NC clock (tNC) a setpoint speed value (nNC*) and the P gain (kP) of the NC position controller (L_NC) and the desired axle speed (nNC) and the average axle speed (nNCMW) during the last NC position controller clock are transferred from the NC to the drive. From this information, polynomial segments of the third degree are in each case generated on the drive side, valid for the duration of an NC position controller clock (tNC). They are constructed in such a way that the speed at the polynomial transitions is constant. A variable component of the position polynomial is determined as the fine position component xF, with which the setpoint position values are finely interpolated in the drive.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: January 13, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Grohmann, Stefan Kuenzel, Wolfgang Papiernik, Bernd Quaschner, Guido Seeger, Johannes Welker
  • Patent number: 6611122
    Abstract: The invention makes it possible to execute the pre-control and the fine interpolation in the drive (A) in the fast drive clock (tDR) with a slower path pre-setting in the clock (tNC) of the NC. For this purpose, in each NC clock (tNC) a setpoint speed value (nNC*) and the P gain (kP) of the NC position controller (L_NC) and the desired axle speed (nNC) and the average axle speed (nNCMW) during the last NC position controller clock are transferred from the NC to the drive. From this information, polynomial segments of the third degree are in each case generated on the drive side, valid for the duration of an NC position controller clock (tNC). They are constructed in such a way that the speed at the polynomial transitions is constant. A variable component of the position polynomial is determined as the fine position component xF, with which the setpoint position values are finely interpolated in the drive.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: August 26, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Thomas Grohmann, Stefan Kuenzel, Wolfgang Papiernik, Bernd Quaschner, Guido Seeger, Johannes Welker
  • Patent number: 6580245
    Abstract: A critical resonant frequency (fres) of the axes of a moving machine element is damped as effectively as possible with the aid of a jerk limitation. Good damping in the case of a desired frequency is achieved when the longest possible time (TrLim) which can be traveled with a maximum permissible jerk (rLim) is selected such that 1/TrLim coincides with the lowest natural frequency (fres) of the participating axes. This finding is implemented by adapting the path dynamics such that the TrLim=aMax/rLim yielded by the prescribed dynamics limiting values is varied by reducing the maximum jerk (rLim) to achieve good damping results for the lowest natural frequency (fres) of the participating axes.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: June 17, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernd Quaschner, Theo Reichel, Elmar Schaefers, Wilhelm Westermeyer, Georg Wiegaertner
  • Publication number: 20030098663
    Abstract: The invention makes it possible to execute the pre-control and the fine interpolation in the drive (A) in the fast drive clock (tDR) with a slower path pre-setting in the clock (tNC) of the NC. For this purpose, in each NC clock (tNC) a setpoint speed value (nNC*) and the P gain (kP) of the NC position controller (L_NC) and the desired axle speed (nNC) and the average axle speed (nNCMW) during the last NC position controller clock are transferred from the NC to the drive. From this information, polynomial segments of the third degree are in each case generated on the drive side, valid for the duration of an NC position controller clock (tNC). They are constructed in such a way that the speed at the polynomial transitions is constant. A variable component of the position polynomial is determined as the fine position component xF, with which the setpoint position values are finely interpolated in the drive.
    Type: Application
    Filed: February 22, 2002
    Publication date: May 29, 2003
    Inventors: Thomas Grohmann, Stefan Kuenzel, Wolfgang Papiernik, Bernd Quaschner, Guido Seeger, Johannes Welker
  • Publication number: 20020135335
    Abstract: The invention makes it possible to execute the pre-control and the fine interpolation in the drive (A) in the fast drive clock (tDR) with a slower path pre-setting in the clock (tNC) of the NC. For this purpose, in each NC clock (tNC) a setpoint speed value (nNC*) and the P gain (kP) of the NC position controller (L_NC) and the desired axle speed (nNC) and the average axle speed (NNCMW) during the last NC position controller clock are transferred from the NC to the drive. From this information, polynomial segments of the third degree are in each case generated on the drive side, valid for the duration of an NC position controller clock (tNC). They are constructed in such a way that the speed at the polynomial transitions is constant. A variable component of the position polynomial is determined as the fine position component xF, with which the setpoint position values are finely interpolated in the drive.
    Type: Application
    Filed: August 30, 2001
    Publication date: September 26, 2002
    Inventors: Thomas Grohmann, Stefan Kuenzel, Wolfgang Papiernik, Bernd Quaschner, Guido Seeger, Johannes Welker
  • Publication number: 20020074964
    Abstract: The goal of the invention is to dampen as effectively as possible a critical resonant frequency (fres) of the axes of a moving machine element with the aid of a jerk limitation. Good damping in the case of a desired frequency is achieved when the longest possible time (TrLim) which can be traveled with a maximum permissible jerk (rLim) is selected such that 1/TrLim coincides with the lowest natural frequency (fres) of the participating axes. The present invention attempts to convert this finding by adapting the path dynamics by virtue of the fact that the TrLim=aMax/rLim yielded by the prescribed dynamics limiting values is varied by reducing the maximum jerk (rLim) such that good damping results for the lowest natural frequency (fres) of the participating axes.
    Type: Application
    Filed: August 14, 2001
    Publication date: June 20, 2002
    Inventors: Bernd Quaschner, Theo Reichel, Elmar Schaefers, Wilhelm Westermeyer, Georg Wiegaertner
  • Patent number: 5930142
    Abstract: A process and device are provided for numerical control, in particular, of machine tools or robots having a plurality of axes. The process and device use base interpolations performed on a block-by-block basis and, in addition, one or more gear interpolations that convert a controlling guiding motion into a follower motion. Each gear interpolation is assigned parallel to one or more base interpolations and functions independently of block limits of a base interpolation in its own gear interpolation segments. The coupling characteristic of a gear interpolation ensues from a coupling factor, from a control curve stored in tabular form, or from a control curve stored as a mathematical functional equation. The gear interpolations can be obtained from so-called gear interpolation units and can be cascaded. Moreover, they can be fed back directly or indirectly and can be variably interconnected, as needed, with any existing sources and actuators.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: July 27, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Siegfried Schleicher, Johannes Welker, Bernd Quaschner
  • Patent number: 5804940
    Abstract: A method for the numerical control of machines with several axes, in particular machine tools and robots, to compensate for the inaccuracies occurring when the axes are reversed, wherein varying friction conditions, as well as slackness and torsional effects are compensated using a friction precontrol. Rotation speed reference values are corrected by injecting a correction pulse with an acceleration-dependent injection amplitude and a constant decay time for each axis at the time of passage from one quadrant to another, with the associated change in direction. The injection amplitude and constant decay time are determined for each machine manually or learned in an additional embodiment automatically in a self-learning system in the form of a neural network.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: September 8, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Friedrich Erkens, Stefan Maetschke, Bernd Quaschner