# US 11,305,781 B2 · Vehicle control device

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- Number: US 11,305,781 B2
- Document ID: US11305781B2
- Status: Granted
- Kind: B2
- Application number: 17/093,046
- Filed: 2020-11-09
- Published: 2021-05-20
- Granted: 2022-04-19
- Earliest claimed: 2019-11-15
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Atsushi Tabata; Koichi Okuda; Tooru Matsubara; Hiromasa Tatsushiro; Kota Fujii
- Web page: https://patentgrep.com/patent/US11305781B2

## CPC

- B60W 50/0098: {Details of control systems ensuring comfort, safety or stability not otherwise provided for}
- F16H 59/38: of gearing elements
- B60K 6/365: with the gears having orbital motion
- F16H 59/72: dependent on oil characteristics, e.g. temperature, viscosity
- F16H 61/00: Control functions within {control units of} change-speed- or reversing-gearings for conveying rotary motion {; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing}
- F16H 61/0204: {for gearshift control, e.g. control functions for performing shifting or generation of shift signal}
- G06N 20/00: Machine learning
- B60K 6/445: Differential gearing distribution type
- B60K 6/547: the transmission being a stepped gearing
- B60W 2050/0082: {for initialising the control system}
- B60W 2050/0088: {Adaptive recalibration}
- B60W 2510/10: Change speed gearings
- F16H 2061/0087: {Adaptive control, e.g. the control parameters adapted by learning}
- Y02T 10/62: Hybrid vehicles
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- F16H: GEARING
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A vehicle control device stores learning data to correct a parameter used in a control program for controlling a vehicle, determines whether or not a part controlled by the parameter has been replaced; and resets the learning data when determining that the part has been replaced. The vehicle control device determines whether or not the part has been replaced by identifying individuality of the part based on characteristics of a sensor output from a sensor provided in the part.

## Claims

### Claim 1

A vehicle control device that performs learning to correct a parameter used in a control program for controlling a vehicle, the vehicle control device comprising:
a storage unit that stores learning data obtained by the learning;
a replacement determining unit that determines whether or not a part controlled by the parameter has been replaced; and
a rewriting executing unit that resets the learning data stored in the storage unit when the replacement determining unit determines that the part has been replaced, wherein
the replacement determining unit determines whether or not the part has been replaced by identifying individuality of the part based on characteristics of a sensor output from a sensor provided in the part.

### Claim 2 (depends on 1)

The vehicle control device according to claim 1, wherein:
a plurality of sensors is provided; and
the replacement determining unit determines that the part has been replaced based on simultaneous detection of changes in characteristics of sensor outputs respectively output from more than one of the sensors.

### Claim 3 (depends on 1)

The vehicle control device according to claim 1, further comprising an IG determining unit that determines whether or not an ignition signal has been switched from an OFF signal that stops a travel driving force source to an ON signal that starts the travel driving force source, wherein the replacement determining unit determines whether or not the part has been replaced when the IG determining unit determines that the ignition signal has been switched from the OFF signal to the ON signal.

### Claim 4 (depends on 1)

The vehicle control device according to claim 1, wherein the replacement determining unit identifies the individuality of the part using artificial intelligence.

### Claim 5 (depends on 1)

The vehicle control device according to claim 1, wherein:
the part is a transmission; and
the parameter is an oil pressure command value for controlling switching of a gear stage of the transmission.

### Claim 6 (depends on 1)

The vehicle control device according to claim 1, wherein the sensor is a rotation speed sensor.