Patents by Inventor Petri Klemetti
Petri Klemetti 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).
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Patent number: 8794047Abstract: A method and apparatus for the precise measuring operation of a micromechanical rotation rate sensor, including at least one deflectively suspended seismic mass, at least one drive device for driving the seismic mass, and at least one first and one second trimming electrode element, which are jointly assigned directly or indirectly to the seismic mass, a first electrical trimming voltage (UTO1, UTLO1, UTRO1) being set between the first trimming electrode element and the seismic mass, and a second electrical trimming voltage (UTO2, UTLO2, UTRO2) being set between the second trimming electrode element and the seismic mass, the first and the second electrical trimming voltages being set at least as a function of a quadrature parameter (UT) and a resonance parameter (Uf).Type: GrantFiled: April 28, 2010Date of Patent: August 5, 2014Assignees: Continental Teves AG & Co. oHG, VTI Technologies OyInventors: Stefan Günthner, Roland Hilser, Ramnath Sivaraman, Bernhard Schmid, Petri Klemetti
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Patent number: 8646333Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: GrantFiled: December 16, 2011Date of Patent: February 11, 2014Assignee: Murata Electronics OyInventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli
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Patent number: 8635909Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: GrantFiled: December 16, 2011Date of Patent: January 28, 2014Assignee: Murata Electronics OyInventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli
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Publication number: 20120118062Abstract: A method and apparatus for the precise measuring operation of a micromechanical rotation rate sensor, including at least one deflectively suspended seismic mass, at least one drive device for driving the seismic mass, and at least one first and one second trimming electrode element, which are jointly assigned directly or indirectly to the seismic mass, a first electrical trimming voltage (UTO1, UTLO1, UTRO1) being set between the first trimming electrode element and the seismic mass, and a second electrical trimming voltage (UTO2, UTLO2, UTRO2) being set between the second trimming electrode element and the seismic mass, the first and the second electrical trimming voltages being set at least as a function of a quadrature parameter (UT) and a resonance parameter (Uf).Type: ApplicationFiled: April 28, 2010Publication date: May 17, 2012Applicants: VTI Technologies OY, Continental Teves AG & Co., OHGInventors: Stefan Günthner, Roland Hilser, Ramnath Sivaraman, Bernhard Schmid, Petri Klemetti
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Publication number: 20120085168Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: ApplicationFiled: December 16, 2011Publication date: April 12, 2012Applicant: VTI TECHNOLOGIES OYInventors: Petri KLEMETTI, Kaisa NERA, Antti LIPSANEN, Anssi BLOMQVIST, Altti TORKKELI
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Publication number: 20120085167Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: ApplicationFiled: December 16, 2011Publication date: April 12, 2012Applicant: VTI Technologies OyInventors: Petri KLEMETTI, Kaisa NERA, Antti LIPSANEN, Anssi BLOMQVIST, Altti TORKKELI
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Patent number: 8104343Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: GrantFiled: October 3, 2008Date of Patent: January 31, 2012Assignee: VTI Technologies OyInventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli
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Publication number: 20090165553Abstract: The invention relates to measuring devices to be used in the measuring of angular velocity and, more precisely, to vibrating micromechanical sensors of angular velocity. In a sensor of angular velocity according to the invention, a mass is supported to the frame of the sensor component by means of an asymmetrical spring structure (1), (2), (3), (4), (22), (24) in such a way, that the coupling from one mode of motion to another, conveyed by the spring (1), (2), (3), (4), (22), (24), cancels or alleviates the coupling caused by the non-ideality due to the skewness in the springs or in their support. The structure of the sensor of angular velocity according to the invention enables reliable measuring with good performance, particularly in small vibrating micromechanical solutions for sensors of angular velocity.Type: ApplicationFiled: October 3, 2008Publication date: July 2, 2009Inventors: Petri Klemetti, Kaisa Nera, Antti Lipsanen, Anssi Blomqvist, Altti Torkkeli