Shift-by-wire device and transmission device mounting thereon the same
First Claim
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1. A shift-by-wire device connected communicatively to an administrative electronic control unit, which inputs thereinto a signal from a shift position sensor for detection of a demanded shift position demanded by a driver, to drivingly control a manual shaft on the basis of a shift command from the administrative electronic control unit to actuate an object being actuated, the shift-by-wire device comprising:
- a shaft position sensor that detects a rotating angle of the manual shaft,a drive unit that drives an actuator of the manual shaft,an operational function unit including an operational CPU, the operational CPU inputs the rotating angle of the shaft from the shaft position sensor into the operational function unit, receives a shift command from the administrative electronic control unit, transmits the rotating angle of the shaft to the administrative electronic control unit, and controls the drive unit on the basis of the rotating angle of the shaft thus input and the shift command thus received, anda monitoring function unit including a monitoring CPU, the monitoring CPU inputs the rotating angle of the shaft from the shaft position sensor into the monitoring function unit, monitors the presence of abnormality in the operational function unit and transmits the rotating angle of the shaft to the administrative electronic control unit when it is determined that abnormality occurs in the operational function unit,wherein;
the actuator of the manual shaft comprises an electric motor having a rotor,a rotational position sensor is provided to detect a rotational position of the rotor in order to control the electric motor,the operational function unit inputs thereinto the rotational position of the rotor from the rotational position sensor and controls the drive unit on the basis of the rotational position, andwhen it is determined that abnormality occurs in the electric source for supplying electricity to the operational function unit, the monitoring function unit inputs thereinto a rotational position of the rotor from the rotational position sensor and deduces a rotating angle of the shaft on the basis of the rotational position to transmit the rotating angle to the administrative electronic control unit.
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Abstract
A shift-by-wire device including a shaft position sensor that detects a shaft rotating angle, a drive unit that drives an actuator of the shaft, an operational function unit including an operational CPU that receives the shaft rotating angle from the shaft position sensor, receives a shift command from an administrative electronic control unit to transmit the shaft rotating angle of the shaft to the administrative electronic control unit, and controls the drive unit according to the shaft rotating angle and shift command. The device further includes a monitoring function unit including a monitoring CPU that receives the shaft rotating angle in order to monitor whether there is an abnormality in the operational function unit and transmits the shaft rotating angle to the administrative electronic control unit when a detected abnormality occurs in the operational function unit.
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Citations
14 Claims
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1. A shift-by-wire device connected communicatively to an administrative electronic control unit, which inputs thereinto a signal from a shift position sensor for detection of a demanded shift position demanded by a driver, to drivingly control a manual shaft on the basis of a shift command from the administrative electronic control unit to actuate an object being actuated, the shift-by-wire device comprising:
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a shaft position sensor that detects a rotating angle of the manual shaft, a drive unit that drives an actuator of the manual shaft, an operational function unit including an operational CPU, the operational CPU inputs the rotating angle of the shaft from the shaft position sensor into the operational function unit, receives a shift command from the administrative electronic control unit, transmits the rotating angle of the shaft to the administrative electronic control unit, and controls the drive unit on the basis of the rotating angle of the shaft thus input and the shift command thus received, and a monitoring function unit including a monitoring CPU, the monitoring CPU inputs the rotating angle of the shaft from the shaft position sensor into the monitoring function unit, monitors the presence of abnormality in the operational function unit and transmits the rotating angle of the shaft to the administrative electronic control unit when it is determined that abnormality occurs in the operational function unit, wherein; the actuator of the manual shaft comprises an electric motor having a rotor, a rotational position sensor is provided to detect a rotational position of the rotor in order to control the electric motor, the operational function unit inputs thereinto the rotational position of the rotor from the rotational position sensor and controls the drive unit on the basis of the rotational position, and when it is determined that abnormality occurs in the electric source for supplying electricity to the operational function unit, the monitoring function unit inputs thereinto a rotational position of the rotor from the rotational position sensor and deduces a rotating angle of the shaft on the basis of the rotational position to transmit the rotating angle to the administrative electronic control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A shift-by wire system comprising:
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a transmission device mounting thereon an automatic transmission capable of power transmission by a clutch that makes use of fluid pressure supplied through a manual valve interlocking with a manual shaft to actuate, and a shift by wire device connected communicatively to an administrative electronic control unit, which inputs thereinto a signal from a shaft position sensor for detection of a demanded shift position demanded by a driver, to drivingly control the manual shaft on the basis of a shift control command from the administrative electronic control unit to actuate an object being actuated, the shift-by-wire device comprising; a shaft position sensor that detects a rotating angle of the manual shaft, a drive unit that drives an actuator of the manual shaft, an operational function unit including an operational CPU, the operational CPU inputs the rotating angle of the shaft from the shaft position sensor into the operational function unit, receives a shift command from the administrative electronic control unit, transmits the rotating angle of the shaft to the administrative electronic control unit, and controls the drive unit on the basis of the rotating angle of the shaft thus input and the shift command thus received, and a monitoring function unit including a monitoring CPU, the monitoring CPU inputs the rotating angle of the shaft from the shaft position sensor into the monitoring function unit, monitors the presence of abnormality in the operational function unit and transmits the rotating angle of the shaft to the administrative electronic control unit when it is determined that abnormality occurs in the operational function unit, wherein; the actuator of the manual shaft comprises an electric motor having a rotor, a rotational position sensor is provided to detect a rotational position of the rotor in order to control the electric motor, the operational function unit inputs thereinto the rotational position of the rotor from the rotational position sensor and controls the drive unit on the basis of the rotational position, when it is determined that abnormality occurs in the electric source for supplying electricity to the operational function unit, the monitoring function unit inputs thereinto a rotational position of the rotor from the rotational position sensor and deduces a rotating angle of the shaft on the basis of the rotational position to transmit the rotating angle to the administrative electronic control unit, and the shift by wire device drives the manual shaft and the object being actuated.
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Specification
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Current AssigneeAisin AW Company Limited (Aisin Corp.)
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Original AssigneeAisin AW Company Limited (Aisin Corp.)
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InventorsIto, Yoshinobu
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Primary Examiner(s)Tran, Khoi
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Assistant Examiner(s)MOYER, DALE S
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Application NumberUS12/637,142Publication NumberTime in Patent Office1,191 DaysField of Search477906- 7, 743/35, 250/231.14, 701 51- 66US Class Current701/51CPC Class CodesF16H 2061/1208 with diagnostic check cycle...F16H 2061/122 Avoiding failures by using ...F16H 2061/1268 Electric parts of the contr...F16H 2061/1292 the failing part is the pow...F16H 2061/326 Actuators for range selecti...F16H 61/12 Detecting malfunction or po...F16H 61/32 Electric motors actuators o...
