Patents by Inventor Naruki Suetake
Naruki Suetake 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: 10523136Abstract: Provided are an inverter device, which is capable of preventing a malfunction of the inverter device while reducing the number of interface wirings, and a method of controlling the inverter device. A communication terminal of a communication circuit having a function of communicating to/from a vehicle, an input terminal for a start signal for starting a control circuit, and a signal for holding the control circuit active even when the start signal is changed after the start of the control circuit are used. A drive prohibition signal issued from the vehicle is received through the same terminal as that for the start signal to unify terminals for the start signal and the drive prohibition signal, to thereby reduce the number of interface wirings.Type: GrantFiled: March 17, 2017Date of Patent: December 31, 2019Assignee: Mitsubishi Electric CorporationInventors: Tomohiro Kurita, Naruki Suetake, Tatsuki Kowa
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Patent number: 10151605Abstract: In a rotation angle detection device for detecting a rotation angle and a rotation speed of a motor generator by using a resolver, a resolver detection accuracy is improved by raising the amplitude or frequency of an excitation signal when the motor generator is performing a driving operation. Furthermore, by reducing the amplitude or frequency of the excitation signal when the motor generator is not performing a driving operation, it is possible to suppress the amount of heat generated by the excitation circuit and the resolver, while maintaining a resolver detection accuracy that enables information about the rotation speed of the motor generator to be obtained.Type: GrantFiled: November 6, 2014Date of Patent: December 11, 2018Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Isao Tottori, Naruki Suetake
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Publication number: 20180091069Abstract: Provided are an inverter device, which is capable of preventing a malfunction of the inverter device while reducing the number of interface wirings, and a method of controlling the inverter device. A communication terminal of a communication circuit having a function of communicating to/from a vehicle, an input terminal for a start signal for starting a control circuit, and a signal for holding the control circuit active even when the start signal is changed after the start of the control circuit are used. A drive prohibition signal issued from the vehicle is received through the same terminal as that for the start signal to unify terminals for the start signal and the drive prohibition signal, to thereby reduce the number of interface wirings.Type: ApplicationFiled: March 17, 2017Publication date: March 29, 2018Applicant: Mitsubishi Electric CorporationInventors: Tomohiro KURITA, Naruki SUETAKE, Tatsuki KOWA
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Publication number: 20170276515Abstract: In a rotation angle detection device for detecting a rotation angle and a rotation speed of a motor generator by using a resolver, a resolver detection accuracy is improved by raising the amplitude or frequency of an excitation signal when the motor generator is performing a driving operation. Furthermore, by reducing the amplitude or frequency of the excitation signal when the motor generator is not performing a driving operation, it is possible to suppress the amount of heat generated by the excitation circuit and the resolver, while maintaining a resolver detection accuracy that enables information about the rotation speed of the motor generator to be obtained.Type: ApplicationFiled: November 6, 2014Publication date: September 28, 2017Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Katsuya TSUJIMOTO, Isao TOTTORI, Naruki SUETAKE
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Patent number: 9680373Abstract: The present invention has: a pump capacitor (12), which has one end thereof connected to the source power supply (B) side via a diode (7), and which has the other end thereof connected to two kinds of voltage sources via switches (3, 4); and an output capacitor (13), which has one end there of connected to a high-potential terminal of a pump capacitor via a diode (8), and the other end thereof connected to a source power supply. A filter circuit configured with a resistor (15) and a capacitor (11) is provided between the source power supply and the diode (7).Type: GrantFiled: April 25, 2013Date of Patent: June 13, 2017Assignee: Mitsubishi Electric CorporationInventors: Naruki Suetake, Takamasa Asai, Kenichi Fujie
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Publication number: 20150318783Abstract: The present invention has: a pump capacitor (12), which has one end thereof connected to the source power supply (B) side via a diode (7), and which has the other end thereof connected to two kinds of voltage sources via switches (3, 4); and an output capacitor (13), which has one end there of connected to a high-potential terminal of a pump capacitor via a diode (8), and the other end thereof connected to a source power supply. A filter circuit configured with a resistor (15) and a capacitor (11) is provided between the source power supply and the diode (7).Type: ApplicationFiled: April 25, 2013Publication date: November 5, 2015Applicant: Mitsubishi Electric CorporationInventors: Naruki SUETAKE, Takamasa ASAI, Kenichi FUJIE
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Patent number: 8450983Abstract: A microcomputer that exercises driving control and power-generation control over a motor generator unit and a power-generation maintaining unit that, separately from the power-generation control exercised by the microcomputer, maintains a power-generation process performed by the motor generator unit are provided. While the microcomputer is operating normally, the power-generation maintaining unit allows the microcomputer to exercise the power-generation control. When an abnormality has occurred in the microcomputer, the power-generation maintaining unit acts as a backup or secondary controller to maintain the power-generation process performed by the motor generator unit, in an autonomous manner independently of the microcomputer.Type: GrantFiled: December 21, 2010Date of Patent: May 28, 2013Assignee: Mitsubishi Electric CorporationInventors: Hiroshi Gokan, Naruki Suetake, Katsuya Tsujimoto
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Patent number: 8191417Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: GrantFiled: February 17, 2011Date of Patent: June 5, 2012Assignee: Mitsubishi Electric CorporationInventors: Yuji Ariyoshi, Hiroyuki Uramachi, Masahiro Kawai, Naruki Suetake, Koji Tanimoto
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Patent number: 8181514Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: GrantFiled: February 17, 2011Date of Patent: May 22, 2012Assignee: Mitsubishi Electric CorporationInventors: Yuji Ariyoshi, Hiroyuki Uramachi, Masahiro Kawai, Naruki Suetake, Koji Tanimoto
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Publication number: 20120001597Abstract: A microcomputer that exercises driving control and power-generation control over a motor generator unit and a power-generation maintaining unit that, separately from the power-generation control exercised by the microcomputer, maintains a power-generation process performed by the motor generator unit are provided. While the microcomputer is operating normally, the power-generation maintaining unit allows the microcomputer to exercise the power-generation control. When an abnormality has occurred in the microcomputer, the power-generation maintaining unit maintains the power-generation process performed by the motor generator unit, in an autonomous manner independently of the microcomputer.Type: ApplicationFiled: December 21, 2010Publication date: January 5, 2012Applicant: Mitsubishi Electric CorporationInventors: Hiroshi GOKAN, Naruki Suetake, Katsuya Tsujimoto
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Publication number: 20110138927Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: ApplicationFiled: February 17, 2011Publication date: June 16, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuji ARIYOSHI, Hiroyuki URAMACHI, Masahiro KAWAI, Naruki SUETAKE, Koji TANIMOTO
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Publication number: 20110132101Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: ApplicationFiled: February 17, 2011Publication date: June 9, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuji ARIYOSHI, Hiroyuki URAMACHI, Masahiro KAWAI, Naruki SUETAKE, Koji TANIMOTO
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Patent number: 7942052Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: GrantFiled: January 9, 2009Date of Patent: May 17, 2011Assignee: Mitsubishi Electric CorporationInventors: Yuji Ariyoshi, Hiroyuki Uramachi, Masahiro Kawai, Naruki Suetake, Koji Tanimoto
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Publication number: 20100000308Abstract: An inflow port and an outflow port of a bypass passage have openings on a front surface near a projecting end and on a bottom surface, respectively, of a bypass passage forming member. A recess portion is disposed on the front surface of the bypass passage forming member on a circuit housing portion side of the inflow port so as to extend at a predetermined depth over an entire region in a longitudinal direction of a short side of a rectangular cross section of the bypass passage forming member.Type: ApplicationFiled: January 9, 2009Publication date: January 7, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yuji ARIYOSHI, Hiroyuki URAMACHI, Masahiro KAWAI, Naruki SUETAKE, Koji TANIMOTO
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Publication number: 20070242403Abstract: Provided is a power supply protection circuit for an in-vehicle electronic device, for protecting a power supply of a circuit to be protected which is installed in the in-vehicle electronic device, including a battery power supply for the in-vehicle electronic device, a diode whose anode terminal is connected therewith, a transistor whose collector terminal is connected with a cathode terminal of the diode and whose emitter terminal is connected with a power supply voltage supplying terminal of the circuit to be protected, and a Zener diode provided between the battery power supply and a ground terminal to be connected in series with a resistor having an anode terminal connected with the ground terminal and a cathode terminal connected with the resistor and a base terminal of the transistor.Type: ApplicationFiled: June 15, 2006Publication date: October 18, 2007Inventor: Naruki Suetake
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Publication number: 20060187098Abstract: A signal processing circuit can obtain a ratiometric output with high precision and high responsiveness in a relatively easy and simple way. A pulse generation circuit generates a pulse signal corresponding to an input signal. An integration part generates an integrated voltage having a time slope proportional to an input voltage with a duration specified by the pulse signal being set as an integration period. A hold part holds and outputs a difference voltage between a start voltage and an end voltage of the integrated voltage in the integration period. The integration period is specified at the timing of the pulse signal output from the pulse output circuit, and a ratiometric output is generated by sample holding the integral signal.Type: ApplicationFiled: June 3, 2005Publication date: August 24, 2006Inventor: Naruki Suetake
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Patent number: 7084802Abstract: A signal processing circuit can obtain a ratiometric output with high precision and high responsiveness in a relatively easy and simple way. A pulse generation circuit generates a pulse signal corresponding to an input signal. An integration part generates an integrated voltage having a time slope proportional to an input voltage with a duration specified by the pulse signal being set as an integration period. A hold part holds and outputs a difference voltage between a start voltage and an end voltage of the integrated voltage in the integration period. The integration period is specified at the timing of the pulse signal output from the pulse output circuit, and a ratiometric output is generated by sample holding the integral signal.Type: GrantFiled: June 3, 2005Date of Patent: August 1, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Naruki Suetake
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Patent number: 7069157Abstract: Provided is a heat sensitive flow meter for measuring a flow rate of a fluid passing through a flow passage provided in an internal combustion engine, including: a filter (7) (constituted of a fixed resister (3) and a capacitor (4)) for inputting a flow rate signal Vin outputted from a flow rate measurement unit installed within the flow passage to subject the flow rate signal to a predetermined filter processing; and a selection unit (8) (constituted of a fixed resister (2), an operational amplifier (5), and a diode (6)) for comparing the flow rate signal Vin outputted from the flow rate detection unit and a filter signal Vf passed through the filter (7) to select the signal having a higher voltage as a new flow rate signal.Type: GrantFiled: April 13, 2004Date of Patent: June 27, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Naruki Suetake, Kazuhiko Ootsuka
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Publication number: 20050109085Abstract: Provided is a heat sensitive flow meter for measuring a flow rate of a fluid passing through a flow passage provided in an internal combustion engine, including: a filter (7) (constituted of a fixed resister (3) and a capacitor (4)) for inputting a flow rate signal Vin outputted from a flow rate measurement unit installed within the flow passage to subject the flow rate signal to a predetermined filter processing; and a selection unit (8) (constituted of a fixed resister (2), an operational amplifier (5), and a diode (6)) for comparing the flow rate signal Vin outputted from the flow rate detection unit and a filter signal Vf passed through the filter (7) to select the signal having a higher voltage as a new flow rate signal.Type: ApplicationFiled: April 13, 2004Publication date: May 26, 2005Inventors: Naruki Suetake, Kazuhiko Ootsuka
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Patent number: 6889544Abstract: A thermal type flow rate detector includes: a bridge circuit constructed by upstream side and downstream side temperature detecting elements for detecting a temperature of fluid flowing from the upstream side to the downstream side, and fixed resistors; and a temperature difference controlling circuit for continuously supplying an electric power to upstream side and downstream side heat generating elements so that a temperature difference between the temperature detecting elements becomes a predetermined value. The temperature difference controlling circuit includes: a differential amplifier connected to the bridge circuit; a first constant voltage power supply; a second constant voltage power supply having a lower constant voltage than that of the first constant voltage power supply; and the upstream side and downstream side heat generating elements.Type: GrantFiled: May 20, 2003Date of Patent: May 10, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Koji Tanimoto, Naruki Suetake