公开(公告)号：JPH11267076A

公开(公告)日：1999-10-05

申请号：JP2164699

申请日：1999-01-29

Applicant: ST MICROELECTRONICS SRL

Inventor： GRASSO GIUSEPPE ,  LO PRESTI MATTEO ,  SORTINO GIANFRANCO

IPC: A47L9/28 ,  G05B13/02 ,  G05D16/20

Abstract: PROBLEM TO BE SOLVED: To provide an intelligent suction device in which suction force can be automatically adjusted corresponding to a condition of a surface to be cleaned. SOLUTION: An intelligent suction device for a vacuum cleaner or the like especially includes a fuzzy logic controller 1. The fuzzy logic controller 1 is suitable to controlling a motor of a turbine 2, its suction force is detected by at least one pressure sensor 3, and the pressure sensor 3 feeds its measured value back to the controller 1 in a closed loop.

公开(公告)号：ITMI20002611A1

公开(公告)日：2002-06-04

申请号：ITMI20002611

申请日：2000-12-04

Applicant: ST MICROELECTRONICS SRL

Inventor： LO PRESTI MATTEO ,  AIELLO NATALE ,  CONSOLI ALFIO ,  GENNARO FRANCESCO ,  TESTA ANTONIO

IPC: H02P25/08

Abstract: A driving circuit for electronically switched motors is provided. The driving circuit includes a supply voltage rectifying stage for providing a rectified supply voltage, first switching means for switching state based on output of a first control block, magnetic means for providing a magnetic flux according to the state of the first switching means, transmission diodes for transmitting an exciting current that flows through the magnetic means, first energy storing means for storing the exciting current, an energy return stage for transferring the energy stored in the first energy storing means to the rectifying stage, and energetic conversion means for receiving the energy stored in the energy storing means through second switching means controlled by a second control block, so as to provide a current as sinusoidal as possible.

公开(公告)号：DE69625040D1

公开(公告)日：2003-01-09

申请号：DE69625040

申请日：1996-03-21

Applicant: ST MICROELECTRONICS SRL ,  CONS RIC MICROELETTRONICA

Inventor： MANGANARO GABRIELE ,  LAVORGNA MARIO ,  LO PRESTI MATTEO ,  FORTUNA LUIGI

IPC: G06G7/26 ,  G06N3/063 ,  F25J3/00

公开(公告)号：DE69619509D1

公开(公告)日：2002-04-04

申请号：DE69619509

申请日：1996-07-24

Applicant: ST MICROELECTRONICS SRL

Inventor： DI GUARDO MARIO ,  D ANGELO GIUSEPPE ,  LO PRESTI MATTEO

IPC: G06F7/68 ,  H02M7/5395 ,  H02P27/08 ,  H03K7/08 ,  H02M7/5387

Abstract: In a fully digital PWM controller employing a sine-triangle modulating technique, the step of linearizing the dependence of the selected scanning frequency of the memory containing the digital samples of the modulating sinusoid, from the value of the digital selection datum, improves regulation at low speed by improving the resolution of selectable frequency values. The PWM driving signals produced by a fully digital controller implementing the linearization step of the invention show an F.F.T. extremely close to the F.F.T. of comparable PWM driving signals produced through a conventional analog technique.

公开(公告)号：IT1319504B1

公开(公告)日：2003-10-20

申请号：ITMI20002611

申请日：2000-12-04

Applicant: ST MICROELECTRONICS SRL

Inventor： AIELLO NATALE ,  LO PRESTI MATTEO ,  CONSOLI ALFIO ,  GENNARO FRANCESCO ,  TESTA ANTONIO

IPC: H02P25/08

Abstract: A driving circuit for electronically switched motors is provided. The driving circuit includes a supply voltage rectifying stage for providing a rectified supply voltage, first switching means for switching state based on output of a first control block, magnetic means for providing a magnetic flux according to the state of the first switching means, transmission diodes for transmitting an exciting current that flows through the magnetic means, first energy storing means for storing the exciting current, an energy return stage for transferring the energy stored in the first energy storing means to the rectifying stage, and energetic conversion means for receiving the energy stored in the energy storing means through second switching means controlled by a second control block, so as to provide a current as sinusoidal as possible.