Patents by Inventor Alfred Pecher
Alfred Pecher 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: 7860689Abstract: The invention relates to a method and a computer programme for detecting the stationary state of a roller bearing, comprising z rolling bodies, where z is a whole number, preferably an even number, to which a sensor arrangement is fixed, delivering a sinusoidal signal, dependent on the rotational position of the bearing on the rotation of the roller bearing. Said sinusoidal signal is sampled, whereupon sampled values are determined. According to the invention, a first average value (MW1) of the sampled values of a first time interval (J1) is determined (S120), whereupon the corresponding average value (MW2, MW3) of other time intervals (J2, J3) is determined (S132).Type: GrantFiled: July 26, 2005Date of Patent: December 28, 2010Assignee: Schaeffler KGInventors: Alfred Pecher, Sven Gempper
-
Patent number: 7716018Abstract: The invention relates to a method and a computer program for determining operating parameters such as, in particular, the rotational speed, the rotational direction, the radial force, the axial force or of structural sound events of a rotating roller bearing to which a sensor arrangement is fixed which, on rotation of the roller bearing delivers a sinusoidal signal, depending on its rotational position, which is sampled at sampling points k, k+1, k+2, . . . To determine the rotational speed, the rotational direction, the radial force and/or the axial force, a mean value is determined by means of estimation and the operating parameters are determined on the basis of a corrected signal which does not obtain an offset by subtraction of the estimated mean value from the sensor signal. To determine structural sound events, the sensor signals are filtered in a high-pass filter and structural sound occurring is determined by estimating a statistical moment of at least the second order.Type: GrantFiled: June 8, 2005Date of Patent: May 11, 2010Assignee: Schaeffler KGInventor: Alfred Pecher
-
Publication number: 20100046877Abstract: The invention relates to a rolling element bearing comprising a cage with cage pockets for guiding rolling elements which are guided in the cage pockets with an axial play at least in the axial direction of the rolling element bearing, thereby defining an axial cage pocket clearance. The invention is characterized in that the cage pocket clearance in a plurality of cage pockets ranges between 0.07 millimeter and 0.17 millimeter.Type: ApplicationFiled: May 22, 2007Publication date: February 25, 2010Applicant: SCHAEFFLER KGInventors: Alfred Pecher, Karl Bywalez, Joachim Schleifenbaum, Henri Van Der Knokke, Manfred Fuchs
-
Patent number: 7650254Abstract: A method for detection and quantitative evaluation of a balance error occurring in a component-bearing system. Static and dynamic forces acting upon the bearing are determined by sensors of a measuring bridge, which are disposed on a rolling bearing and which change the inherent electrical resistance according to the applied pressure, and are made available for analysis in a computer in the form of a periodic test signal that is common to both forces. In order to analyze the test signal, the weighted average of the modulation frequency generated by a balance error and the weighted mean variance thereof are determined from the test signal. The variance is then compared with a given variance threshold value. A variance lying below the variance threshold value is considered to be an indication of a significant balance error in the bearing.Type: GrantFiled: February 4, 2004Date of Patent: January 19, 2010Assignee: Schaeffler KGInventors: Alfred Pecher, Stefan Glück, Joachim Hering
-
Publication number: 20090290826Abstract: The invention relates to a rolling element bearing comprising a cage with at least one first group of guide pockets in which rolling bodies are guided with a certain play. According to the invention, the degree of play is different at least in a first guide pocket of the first group from the degree of play in a second guide pocket of said first group of guide pockets.Type: ApplicationFiled: May 22, 2007Publication date: November 26, 2009Applicant: SCHAEFFLER KGInventors: Alfred Pecher, Karl Bywalez, Joachim Schleifenbaum
-
Patent number: 7599804Abstract: A method for detecting structure-borne noise events in a roller bearing, wherein a measuring signal M of a pressure or dilatation sensor arranged on a roller bearing is fed to a frequency filter for filtering out undesired signal parts. A first variance value is calculated from digital values of the frequency filter output signal and at least one second variance value is calculated from other digital values of the frequency filter output signal and a weighted arithmetic average of the at least two variance values is calculated with the aid of a recursive calculation of the variance value. If the weighted arithmetic variance average value exceeds a pre-selected variance threshold value, then it is assessed that a structure-borne noise event provoked by mechanical damage to the roller bearing has occurred.Type: GrantFiled: January 23, 2004Date of Patent: October 6, 2009Assignee: FAG Kugelfischer AGInventor: Alfred Pecher
-
Patent number: 7591194Abstract: The invention relates to a data capture system and to a processing system (1) for a roller bearing, wherein at least one sensor element (19), conductor strips (4) and electronic components (5, 6) are arranged adjacent to a flexible carrier material (2). The sensor element (19), the conductor strips (4) and the electronic components (5, 6) are directly connected to the flexible carrier material (2) such that said type of data capture system and data processing system (1) can be produced in an economical manner and with varying applications.Type: GrantFiled: September 17, 2004Date of Patent: September 22, 2009Assignee: Schaeffler KGInventors: Alfred Pecher, Joachim Hering, Henry Van Der Knokke, Walter Felber
-
Patent number: 7568842Abstract: A meter bearing with a recess located at the periphery of at least one of the bearing rings. Expansion-measuring strips are disposed in the recess and conducting paths and electronic modules are arranged on a supporting material and evaluate and transmit the output signals of the expansion-measuring strips. The expansion-measuring strips are connected to the electrical conducting paths which extend to the electronic modules. In order to reduce the space required for such a measuring and evaluation system in a meter bearing, the expansion-measuring strips are placed below and/or above the radial plane of the supporting material and of the conductor paths and electronic modules located thereupon.Type: GrantFiled: February 4, 2004Date of Patent: August 4, 2009Assignee: Schaeffler KGInventors: Sven Gempper, Joachim Hering, Stefan Glück, Alfred Pecher, Jens Heim, Timo Schmidt, Stefan Scharting, Edgar Streit
-
Publication number: 20080317396Abstract: The invention relates to a method and a computer programme for detecting the stationary state of a roller bearing, comprising z rolling bodies, where z is a whole number, preferably an even number, to which a sensor arrangement is fixed, delivering a sinusoidal signal, dependent on the rotational position of the bearing on the rotation of the roller bearing. Said sinusoidal signal is sampled, whereupon sampled values are determined. According to the invention, a first average value (MW1) of the sampled values of a first time interval (J1) is determined (S120), whereupon the corresponding average value (MW2, MW3) of other time intervals (J2, J3) is determined (S132).Type: ApplicationFiled: July 26, 2005Publication date: December 25, 2008Applicant: SCHAEFFLER KGInventors: Alfred Pecher, Sven Gempper
-
Publication number: 20080091361Abstract: The invention relates to a method and a computer program for determining operating parameters such as, in particular, the rotational speed, the rotational direction, the radial force, the axial force or of structural sound events of a rotating roller bearing to which a sensor arrangement is fixed which, on rotation of the roller bearing delivers a sinusoidal signal, depending on its rotational position, which is sampled at sampling points k, k+1, k+2, . . . To determine the rotational speed, the rotational direction, the radial force and/or the axial force, a mean value is determined by means of estimation and the operating parameters are determined on the basis of a corrected signal which does not obtain an offset by subtraction of the estimated mean value from the sensor signal. To determine structural sound events, the sensor signals are filtered in a high-pass filter and structural sound occurring is determined by estimating a statistical moment of at least the second order.Type: ApplicationFiled: June 8, 2005Publication date: April 17, 2008Applicant: SCHAEFFLER KGInventor: Alfred Pecher
-
Patent number: 7263901Abstract: A measuring arrangement in a roller bearing, which determines the direction of displacement of a displaceable bearing component in relation to a stationary bearing component. Four pressure-dependent resistors (R1, R2, R3, R4) of a bridge circuit are arranged successively in a line, in a measuring area on a bearing component and in a parallel manner in relation to the direction of displacement of the rolling body or the displaceable rolling component. The distance (R1-R2) is exactly the same as the distance (R3-R4) and the distance (R2-R3) is greater than the other distances. The positions of the resistors and the bridge circuit are selected in such a manner that a single output signal with an asymmetrical form is created. The rotational direction is, for example, determined by the evaluation of the deviation of a maximum of the mean position between two adjacent minima.Type: GrantFiled: January 23, 2004Date of Patent: September 4, 2007Assignee: Fag Kugelfischer AGInventors: Alfred Pecher, Henry Van Der Knokke
-
Publication number: 20070068218Abstract: The invention relates to a data capture system and to a processing system (1) for a roller bearing, wherein at least one sensor element (19), conductor strips (4) and electronic components (5, 6) are arranged adjacent to a flexible carrier material (2). The sensor element (19), the conductor strips (4) and the electronic components (5, 6) are directly connected to the flexible carrier material (2) such that said type of data capture system and data processing system (1) can be produced in an economical manner and with varying applications.Type: ApplicationFiled: September 17, 2004Publication date: March 29, 2007Inventors: Alfred Pecher, Joachim Hering, Henry Van Der Knokke, Walter Felber
-
Publication number: 20060257060Abstract: A meter bearing with a recess located at the periphery of at least one of the bearing rings. Expansion-measuring strips are disposed in the recess and conducting paths and electronic modules are arranged on a supporting material and evaluate and transmit the output signals of the expansion-measuring strips. The expansion-measuring strips are connected to the electrical conducting paths which extend to the electronic modules. In order to reduce the space required for such a measuring and evaluation system in a meter bearing, the expansion-measuring strips are placed below and/or above the radial plane of the supporting material and of the conductor paths and electronic modules located thereupon.Type: ApplicationFiled: February 4, 2004Publication date: November 16, 2006Inventors: Sven Gempper, Joachim Hering, Stefan Gluck, Alfred Pecher, Jens Heim, Timo Schmidt, Stefan Scarting, Edgar Streit
-
Publication number: 20060235628Abstract: A method for detection and quantitative evaluation of a balance error occurring in a component-bearing system. Static and dynamic forces (F<SB>S>/SB>, F<SB>U</SB>) acting upon the bearing are determined by sensors of a measuring bridge, which are disposed on a rolling bearing and which change the inherent electrical resistance according to the applied pressure, and are made available for analysis in a computer in the form of a periodic test signal that is common to both forces. In order to analyze the test signal, the weighted average of the modulation frequency generated by a balance error and the weighted mean variance thereof are determined from the test signal. The variance is then compared with a given variance threshold value. A variance lying below the variance threshold value is considered to be an indication of a significant balance error in the bearing.Type: ApplicationFiled: February 4, 2004Publication date: October 19, 2006Applicant: FAG KUGELFISCHER AGInventors: Alfred Pecher, Stefan Gluck, Joachim Hering
-
Publication number: 20060150737Abstract: A method for detecting structure-borne noise events in a roller bearing, wherein a measuring signal M of a pressure or dilatation sensor arranged on a roller bearing is fed to a frequency filter for filtering out undesired signal parts. The aim of the invention is to determine structure-borne noise waves or structure-borne noise events by an evaluation device. As a result, a first variance value is calculated from digital values of the frequency filter output signal and at least one second variance value is calculated from other digital values of the frequency filter output signal and the weighted arithmetic average of the at least two variance values (new variance, old variance) is calculated with the aid of a retrocursive calculation of the variance value. A surpassing of the weighted arithmetic variance average value (V) exceeds a pre-selected variance threshold value (vsw). It is subsequently evaluated as a structure-borne noise event provoked by mechanical damage to the roller bearing.Type: ApplicationFiled: January 23, 2004Publication date: July 13, 2006Inventor: Alfred Pecher
-
Publication number: 20060144164Abstract: A measuring arrangement in a roller bearing, which determines the direction of displacement of a displaceable bearing component in relation to a stationary bearing component. Four pressure-dependent resistors (R1, R2, R3, R4) of a bridge circuit are arranged successively in a line, in a measuring area on a bearing component and in a parallel manner in relation to the direction of displacement of the rolling body or the displaceable rolling component. The distance (R1-R2) is exactly the same as the distance (R3-R4) and the distance (R2-R3) is greater than the other distances. The positions of the resistors and the bridge circuit are selected in such a manner that a single output signal with an asymmetrical form is created. The rotational direction is, for example, determined by the evaluation of the deviation of a maximum of the mean position between two adjacent minima.Type: ApplicationFiled: January 23, 2004Publication date: July 6, 2006Inventors: Alfred Pecher, Henry Van Der Knokke
-
Publication number: 20060122781Abstract: The invention relates to a method and an arrangement to detect and measure the phase of periodic bio-signals. The aim of the invention is to detect and measure a causal phase response in periodic bio-signals with improved reliability and higher speed compared to conventional methods, simultaneously reducing the computing power required. According to the invention, a status observer is set up in parallel with the analyzed biological system. The output variables of the biological system and the observer are evaluated in order to minimize the occurring error. The determined phase of a periodic bio-signal can, for example, be used for functional diagnostic purposes.Type: ApplicationFiled: November 27, 2003Publication date: June 8, 2006Inventors: Gunter Henning, Peter Husar, Alfred Pecher