A semiconductor device including an abnormality detection section that detects an abnormality occurring in a moving body that moves along a specific path on a surface of a specific object; a position detection section that detects a position of the moving body as an abnormality occurrence position, in a case in which the abnormality detection section has detected an abnormality, and that stores abnormality occurrence position information expressing the abnormality occurrence position in a storage section; and a moving body controller that controls an adjusting section to adjust at least one of a force with which the moving body presses against the specific object, or a position of the moving body in a direction intersecting the surface of the specific object, based on a detection result detected by the abnormality detection section and the abnormality occurrence position information.

A wiper drive device includes: a wiring connected to a wiper motor; a drive element configured to apply a voltage to the wiper motor through the wiring by being turned on so as to rotate the wiper motor; a braking element configured to brake the wiper motor by being turned on when the drive element is turned off so as to flow a current corresponding to a rotational energy of the wiper motor; and a determination unit configured to determine that the braking element is abnormal when a time period from when the wiper motor is braked to when an electric potential of the wiring becomes equal to or less than a predetermined threshold potential is longer than a predetermined value which is the time period in case where the braking element is normal.

The invention relates to a control method (1) for controlling a treatment device (30) for treating a windscreen (31) of a vehicle (3), said treatment device (30) comprising at least one wiping system (300) comprising at least one spraying device (3000) having at least one opening (3000a) through which a hydrophobic liquid (Lq) can be sprayed onto said windscreen (31), said control method (1) performing at least one treatment cycle periodically and comprising the steps of: recovering at least one data item representative of a state of the vehicle; processing the recovered at least one data item representative of the state of the vehicle; verifying the fulfilment of at least one criterion for activating the spraying device (3000) as a function of the processed at least one data item representative of the state of the vehicle; activating the spraying device if the at least one criterion for activating the spraying device has been met.

An electric motor is subjected to PWM duty control based on a target speed (tgt spd) set according to a position of a wiper blade. After a deceleration start position of wiping operation, the electric motor is driven at a PWM duty value (sld sta dutyKsd) obtained by multiplying a PWM duty value (sld sta duty) at the deceleration start position by a predetermined deceleration coefficient (Ksd) set according to the blade position. The deceleration coefficient (Ksd) is set according to the position of the wiper blade based on a ratio (tgt spd/pek tgt spd) between the target speed (pek tgt spd) of the wiper blade at the start of deceleration and the target speed (tgt spd) of the wiper blade.

A wiper device is provided. An operating range of each of two sets of wiper arm units can be properly restricted. A first wiper arm unit is prevented from colliding with a first front pillar or a dash panel when a first output shaft of a first speed reduction mechanism has rotated beyond a first control angle, and a second wiper arm unit is prevented from colliding with a second front pillar or the dash panel when a second output shaft of a second speed reduction mechanism has rotated beyond a second control angle.

A wiper system 1 has wiper blades 4a and 4b driven by a wiper motor 7 and washer nozzles 16 for ejecting washer liquid in association with operation of a washer motor 18. The wiper motor 7 and the washer motor 18 are drive-controlled by a controller 9 housed in a motor unit 6. The controller 9 uses a FET module 10 for a three-phase motor provided with seven FETs. In the FET module 10, a battery reverse connection protection part 31 is provided with one FET (34a), a wiper motor drive part 32 is provided with four FETs (34b to 34e), and a washer motor drive part 33 is provided with two FETs (34f and 34g).

Disclosed embodiments relate to a windscreen wiper drive of a windscreen wiper device of a rail vehicle. The drive includes at least one electric motor, a gear, the input shaft of which being connected to an output shaft of the electric motor, wherein an output shaft of the gear is provided for driving at least one windscreen wiper arm of a windscreen wiper, which arm swings back and forth with the output shaft, a rotation angle sensor unit, which detects a rotation of at least one element of the windscreen wiper drive, and a mechanical rotation angle limitation, which mechanically limits a rotational movement of at least one element of the windscreen wiper drive. The electric motor is formed by a disc motor and the gear is formed by a planetary gear.

Methods, systems, and vehicles are provided for controlling intermittent operation of windshield wiper systems for vehicles. In accordance with one embodiment, a control system for a vehicle windshield wiper system includes one or more detection units and a processor. The one or more detection units are coupled to a user interface disposed onboard the vehicle, and are configured to detect an amount of time pertaining to a position or engagement of a user interface for the wiper system. The processor is coupled to the one or more detection units, and is configured to at least facilitate updating a time step for intermittent operation for the wiper system based at least in part on the amount of time.

An object of the present invention is to provide a brushless motor and a wiper apparatus which allow high-precision control of a motor unit, and which can be reduced in size and weight. The first surface (91) of the control board (90) is provided on the same side as the rotating shaft (46) and the output shaft (51) so as to face the sensor magnet (MG1), the first and second Hall ICs (94a) and (94b) are mounted on the first surface (91). The second surface (92) of the control board (90) is provided on the opposite side from the first surface (91), and the third Hall IC (94c) is mounted on the second surface (92), and located between the first and second Hall ICs (94a) and (94b) so as to face the sensor magnet (MG1). In addition, the MR sensor (95) is mounted on the first surface (91) so as to face the second sensor magnet (MG2).

A semiconductor device including an abnormality detection section that detects an abnormality occurring in a moving body that moves along a specific path on a surface of a specific object; a position detection section that detects a position of the moving body as an abnormality occurrence position, in a case in which the abnormality detection section has detected an abnormality, and that stores abnormality occurrence position information expressing the abnormality occurrence position in a storage section; and a moving body controller that controls an adjusting section to adjust at least one of a force with which the moving body presses against the specific object, or a position of the moving body in a direction intersecting the surface of the specific object, based on a detection result detected by the abnormality detection section and the abnormality occurrence position information.