Patents by Inventor Giovanni Moselli
Giovanni Moselli 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: 9523566Abstract: Electric circuit for estimating the angular position of a rotor of an electric motor, including: a sensing module configured to receive at least one electric signal representative of a drive current of the electric motor and to generate a measurement signal indicative of a switching of the at least one electric signal and a switching index indicative of the type of switching, rising or falling, of the at least one electric signal; and a computing module configured to supply, from the measurement signal and switching index a position signal representative of an angular position of the electric motor rotor.Type: GrantFiled: June 20, 2014Date of Patent: December 20, 2016Assignee: STMICROELECTRONICS S.R.L.Inventors: Giuseppe D'Angelo, Giovanni Moselli, Virginia Clemente
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Publication number: 20150022131Abstract: Electric circuit for estimating the angular position of a rotor of an electric motor, including: a sensing module configured to receive at least one electric signal representative of a drive current of the electric motor and to generate a measurement signal indicative of a switching of the at least one electric signal and a switching index indicative of the type of switching, rising or falling, of the at least one electric signal; and a computing module configured to supply, from the measurement signal and switching index a position signal representative of an angular position of the electric motor rotor.Type: ApplicationFiled: June 20, 2014Publication date: January 22, 2015Applicant: STMicroelectronics S.r.l.Inventors: Giuseppe D'Angelo, Giovanni Moselli, Virginia Clemente
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Patent number: 8805588Abstract: An embodiment is a method, and related system, to implement the square root extraction operation, which grants a 32 bits precision, which has high execution speed and is able to process a decimal radicand. An embodiment relates to a method for controlling an electric machine, comprising the detection of the value of at least one electrical quantity characterizing the machine operation and processing the detected value of said electrical quantity. The control method controls the machine operation on the basis of this processing. In particular the processing of the detected value of the electrical quantity comprises calculating a square root of a radicand value related to the detected value of electrical quantities.Type: GrantFiled: December 23, 2010Date of Patent: August 12, 2014Assignees: STMicroelectronics (Grenoble 2) SAS, STMicroelectronics S.r.l.Inventors: Giuseppe D'Angelo, Fabio Marchio′, Giovanni Moselli, Andre Roger
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Patent number: 8552670Abstract: A control circuit controls an electric motor and includes: a measuring device configured to measure a first phase current of the motor and provide a corresponding first analog signal; an analog-to-digital converter structured to convert the first analog signal into a first digital signal; a conversion module for generating a first converted digital signal representative of the first digital signal expressed in a rotating reference system; a node structured to compare the first converted digital signal into a first reference signal and generate a first error signal; and a measure control circuit structured to provide a timing signal of the analog-to-digital converter depending on the first error signal and a time delay introduced by the measuring device.Type: GrantFiled: July 26, 2011Date of Patent: October 8, 2013Assignee: STMicroelectronics S.r.l.Inventors: Giuseppe D'Angelo, Giovanni Moselli, Virginia Clemente, Vincenzo Buccino, Carolina Verde
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Patent number: 8131450Abstract: A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.Type: GrantFiled: May 17, 2011Date of Patent: March 6, 2012Assignee: STMicroelectronics S.R.L.Inventors: Nicola Cesario, Paolo Amato, Maurizio Di Meglio, Francesco Pirozzi, Giovanni Moselli, Ferdinando Taglialatela-Scafati, Francesco Carpentieri
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Publication number: 20120025745Abstract: A control circuit controls an electric motor and includes: a measuring device configured to measure a first phase current of the motor and provide a corresponding first analog signal; an analog-to-digital converter structured to convert the first analog signal into a first digital signal; a conversion module for generating a first converted digital signal representative of the first digital signal expressed in a rotating reference system; a node structured to compare the first converted digital signal into a first reference signal and generate a first error signal; and a measure control circuit structured to provide a timing signal of the analog-to-digital converter depending on the first error signal and a time delay introduced by the measuring device.Type: ApplicationFiled: July 26, 2011Publication date: February 2, 2012Applicant: STMICROELECTRONICS S.R.L.Inventors: Giuseppe D'Angelo, Giovanni Moselli, Virginia Clemente, Vincenzo Buccino, Carolina Verde
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Publication number: 20110218727Abstract: A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.Type: ApplicationFiled: May 17, 2011Publication date: September 8, 2011Applicant: STMICROELECTRONICS S.R.L.Inventors: Nicola Cesario, Paolo Amato, Maurizio Di Meglio, Francesco Pirozzi, Giovanni Moselli, Ferdinando Taglialatela-Scafati, Francesco Carpentieri
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Publication number: 20110160912Abstract: An embodiment is a method, and related system, to implement the square root extraction operation, which grants a 32 bits precision, which has high execution speed and is able to process a decimal radicand. An embodiment relates to a method for controlling an electric machine, comprising the detection of the value of at least one electrical quantity characterizing the machine operation and processing the detected value of said electrical quantity. The control method controls the machine operation on the basis of this processing. In particular the processing of the detected value of the electrical quantity comprises calculating a square root of a radicand value related to the detected value of electrical quantities.Type: ApplicationFiled: December 23, 2010Publication date: June 30, 2011Applicants: STMICROELECTRONICS S.R.L., STMICROELECTRONICS (GRENOBLE 2) SASInventors: Giuseppe D'ANGELO, Fabio MARCHIO', Giovanni MOSELLI, Andre ROGER
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Patent number: 7962272Abstract: A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.Type: GrantFiled: September 2, 2008Date of Patent: June 14, 2011Assignee: STMicroelectronics S.R.L.Inventors: Nicola Cesario, Paolo Amato, Maurizio Di Meglio, Francesco Pirozzi, Giovanni Moselli, Ferdinando Taglialatela-Scafati, Francesco Carpentieri
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Patent number: 7831402Abstract: A method for estimating values assumed at a certain instant of each period by currents flowing respectively in two distinct windings of a poly-phase load controlled in a space vector modulation (SVM) mode, using a same measuring device, may include coupling the measuring device to the first winding and measuring a current flowing therethrough with an anticipation from the certain instant smaller than or equal to an SVM half-period. The method may also include coupling the measuring device to the second winding, measuring a current flowing therethrough at the certain instant, coupling the measuring device to the first winding, and measuring a current flowing therethrough with a delay equal to the anticipation. The method may also include estimating a value assumed at the certain instant by the current flowing through the first winding based upon the two measured values with the anticipation and with the delay respectively.Type: GrantFiled: January 16, 2008Date of Patent: November 9, 2010Assignee: STMicroelectronics S.R.L.Inventors: Giuseppe D'Angelo, Giovanni Moselli
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Patent number: 7786686Abstract: A method is for estimating an angular position of a rotor of a motor having position sensors along the circumference of a stator and generating digital signals that switch each time the rotor crosses certain angular positions. The method includes storing rotor angular positions at every digital signal switching, and determining for each rotor revolution a time interval elapsed between a current and a precedent switching edge of the signal generated. The method also includes estimating the angular position during a current rotor revolution by identifying which position sensor generated the last detected switching edge. The corresponding angular position and the time interval elapsed between two consecutive rotor crossings, through a same angular position, correspond to a sum between the angular position and a product between a fraction of the time interval elapsed from the corresponding precedent switching edge multiplied by 360° and a number of polar pairs.Type: GrantFiled: January 22, 2008Date of Patent: August 31, 2010Assignee: STMicroelectronics S.R.L.Inventors: Giuseppe D'Angelo, Giovanni Moselli, Stefano Baratto
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Patent number: 7728538Abstract: There is a method of estimating values of winding currents, at an instant of a period, in a winding of a load, controlled in space vector modulation mode through symmetrical control phases. The winding is cyclically coupled between two supply lines through respective switches. A measuring device is alternately coupled to the supply lines. A current of one supply line, with anticipation smaller than or equal to half of the period with respect to the instant and chosen so the current is equal in amplitude to the winding current, and a current of the supply line with delay equal to the anticipation with respect to the instant, is measured. The winding current is estimated at the instant based upon the supply line currents. A threshold interval is fixed between consecutive switching edges of control phases of the winding and another control phase of the switching period wherein current is measured.Type: GrantFiled: January 16, 2008Date of Patent: June 1, 2010Assignee: STMicroelectronics S.R.L.Inventors: Giuseppe D'Angelo, Giovanni Moselli
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Publication number: 20090005953Abstract: A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.Type: ApplicationFiled: September 2, 2008Publication date: January 1, 2009Applicant: STMicroelectronics S.r.l.Inventors: Nicola Cesario, Paolo Amato, Maurizio Di Meglio, Francesco Pirozzi, Giovanni Moselli, Ferdinando Taglialatela -Scafati, Francesco Carpentieri
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Patent number: 7459890Abstract: A control circuit is for an electric power plant including an asynchronous generator of an AC voltage, a motor to rotate a rotor of the asynchronous generator as a function of a first control signal of a developed motor torque, and a bank of capacitors coupled to the asynchronous generator and having a total capacitance varying as function of a second control signal. The control circuit may include a monitor circuit to monitor at least one parameter of the AC voltage, and a control signal generator circuit cooperating with the monitor circuit to generate the first and second control signals by soft-computing techniques both as a function of the frequency and of a representative value of an amplitude of the AC voltage to make the AC voltage have a desired amplitude and frequency.Type: GrantFiled: November 23, 2005Date of Patent: December 2, 2008Assignee: STMicroelectronics S.R.L.Inventors: Stefano Baratto, Francesco Giuffré, Umberto Macri, Mario Lavorgna, Giuseppe D'Angelo, Giovanni Moselli
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Patent number: 7454954Abstract: A knocking presence evaluation circuit in an internal combustion engine having a pressure sensor facing a combustion chamber for each cylinder in the engine and suitable to produce a pressure signal, the circuit having an input terminal; a processing block connected by the input terminal to the pressure sensor and receiving the pressure signal, the processing block performing a processing of the pressure signal for isolating oscillations and generating a derived pressure signal; an acquisition block connected to the processing block and receiving the derived pressure signal and generating first and second measure signals, respectively corresponding to a number and a total duration of digital pulses, from the derived pressure signal; and a soft-computing block connected to the acquisition block and receiving the first and second measure signals and outputting a knocking intensity index, calculated by soft-computing techniques, starting from the first and second measure signals.Type: GrantFiled: February 24, 2006Date of Patent: November 25, 2008Assignee: STMicroelectronics S.r.l.Inventors: Ferdinando Taglialatela, Giovanni Moselli, Mario Lavorgna
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Patent number: 7440839Abstract: A method of sensing the air/fuel ratio in a combustion chamber of an internal combustion engine that may be easily implemented by a respective low-cost device includes a pressure sensor and a learning machine that generates a sensing signal representing the air/fuel ratio by processing the waveform of the pressure in at least one cylinder of the engine. In practice, the learning machine extracts characteristic parameters of the waveform of the pressure and as a function of a certain number of them generates the sensing signal.Type: GrantFiled: March 3, 2006Date of Patent: October 21, 2008Assignee: STMicroelectronics S.R.L.Inventors: Nicola Cesario, Paolo Amato, Maurizio Di Meglio, Francesco Pirozzi, Giovanni Moselli, Ferdinando Taglialatela-Scafati, Francesco Carpentieri
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Publication number: 20080180095Abstract: There is a method of estimating values of winding currents, at an instant of a period, in a winding of a load, controlled in space vector modulation mode through symmetrical control phases. The winding is cyclically coupled between two supply lines through respective switches. A measuring device is alternately coupled to the supply lines. A current of one supply line, with anticipation smaller than or equal to half of the period with respect to the instant and chosen so the current is equal in amplitude to the winding current, and a current of the supply line with delay equal to the anticipation with respect to the instant, is measured. The winding current is estimated at the instant based upon the supply line currents. A threshold interval is fixed between consecutive switching edges of control phases of the winding and another control phase of the switching period wherein current is measured.Type: ApplicationFiled: January 16, 2008Publication date: July 31, 2008Applicant: STMicroelectronics S.r.l.Inventors: Giuseppe D'Angelo, Giovanni Moselli
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Publication number: 20080180046Abstract: A method is for estimating an angular position of a rotor of a motor having position sensors along the circumference of a stator and generating digital signals that switch each time the rotor crosses certain angular positions. The method includes storing rotor angular positions at every digital signal switching, and determining for each rotor revolution a time interval elapsed between a current and a precedent switching edge of the signal generated. The method also includes estimating the angular position during a current rotor revolution by identifying which position sensor generated the last detected switching edge. The corresponding angular position and the time interval elapsed between two consecutive rotor crossings, through a same angular position, correspond to a sum between the angular position and a product between a fraction of the time interval elapsed from the corresponding precedent switching edge multiplied by 360° and a number of polar pairs.Type: ApplicationFiled: January 22, 2008Publication date: July 31, 2008Applicant: STMicroelectronics S.r.l.Inventors: Giuseppe D'ANGELO, Giovanni Moselli, Stefano Baratto
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Publication number: 20080174260Abstract: A method for estimating values assumed at a certain instant of each period by currents flowing respectively in two distinct windings of a poly-phase load controlled in a space vector modulation (SVM) mode, using a same measuring device, may include coupling the measuring device to the first winding and measuring a current flowing therethrough with an anticipation from the certain instant smaller than or equal to an SVM half-period. The method may also include coupling the measuring device to the second winding, measuring a current flowing therethrough at the certain instant, coupling the measuring device to the first winding, and measuring a current flowing therethrough with a delay equal to the anticipation. The method may also include estimating a value assumed at the certain instant by the current flowing through the first winding based upon the two measured values with the anticipation and with the delay respectively.Type: ApplicationFiled: January 16, 2008Publication date: July 24, 2008Applicant: STMicroelectronics S.r.lInventors: Giuseppe D'ANGELO, Giovanni MOSELLI
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Publication number: 20070199367Abstract: A knocking presence evaluation circuit in an internal combustion engine having a pressure sensor facing a combustion chamber for each cylinder comprised in the engine and suitable to produce a pressure signal.Type: ApplicationFiled: February 24, 2006Publication date: August 30, 2007Applicant: STMicroelectronics S.r.l.Inventors: Ferdinando Taglialatela, Giovanni Moselli, Mario Lavorgna