Vehicular electronic control apparatus and method for controlling vehicle

• US 7,739,013 B2
• Filed: 12/06/2005
• Issued: 06/15/2010
• Est. Priority Date: 12/06/2004
• Status: Expired due to Fees

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Hagiwara, Masatoshi, Arita, Hiroshi, Noumi, Kaoru, Takatomi, Shinichiro, Iwanaga, Takehito, Tarumoto, Takuhiro, Ishio, Masato, Oogaki, Koichi, Shirota, Yasuhiro, Uchihashi, Koji, Takahashi, Junji, Takatori, Tsuyoshi
• Primary Examiner(s): Black; Thomas G
• Assistant Examiner(s): Olsen; Lin B
• Application Number:
  US11/294,407
• Publication Number:
  US 20060122752A1
• Time in Patent Office: 1,652 Days
• Field of Search: 701/48
• US Class Current: 701/48
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/10 including control of change-speed gearings
• CPC Class Codes: B60W 2050/0006 Digital architecture hierarchy
• CPC Class Codes: B60W 50/00 Details of control systems for road vehicle drive control not related to the control of a particular sub-unit , e.g. process diagnostic or vehicle driver interfaces
• CPC Class Codes: B60W 50/0098 Details of control systems ensuring comfort, safety or stability not otherwise provided for
• CPC Class Codes: F02D 41/26 using computer, e.g. microprocessor

Abstract

A vehicular electronic control apparatus includes a vehicle control section and a unit control section. The vehicle control section controls a function dependent on a vehicle equipment. The unit control section that controls a function of a unit provided in a vehicle. The vehicle control section and the unit control section are disposed in independent hardwares and software platforms, respectively.

Claims

1. A powertrain electronic control apparatus (ECU) that controls only a powertrain unit including an engine and a transmission mounted on a vehicle, the powertrain ECU being communicatable with a plurality of other ECUs that control a plurality of vehicle equipments other than the powertrain unit, the powertrain ECU comprising:

a vehicle control section that receives data from the plurality of other ECUs or the plurality of vehicle equipments, and

a unit control section that controls a function of the powertrain unit,

wherein the vehicle control section is disposed on a first software platform which is implemented on a first hardware and the unit control section is disposed on a second software platform which is different from the first software platform and is implemented on a second hardware which is different from the first hardware,

wherein the vehicle control section includes a plurality of softwares, each of which corresponds to a different one of the plurality of vehicle equipments, the plurality of softwares calculate the received data and output calculation results to the unit control section;

wherein one of the softwares is configured to calculate at least one of;

a driving force, which is required or consumed by one of the plurality of vehicle equipments, and

a torque, which is required or consumed by one of the plurality of vehicle equipments,

wherein the vehicle control section includes an arbitration section for arbitrating each requirement from the plurality of vehicle equipments or each consumption amount of the plurality of vehicle equipments, wherein the vehicle control section outputs an arbitration result to the unit control section, and

wherein the unit control section controls the function of the powertrain unit based on the calculation results and the arbitration result.

2. The powertrain ECU according to claim 1, wherein:

the vehicle control section comprises a determination section for determining whether or not one of the plurality of vehicle equipments is mounted on the vehicle;

if the determination section determines that the one of the plurality of vehicle equipments is mounted on the vehicle, the vehicle control section notifies the arbitration section of a control value required by the one of the plurality of vehicle equipments; and

if the determination section determines that the one of the plurality of vehicle equipments is not mounted on the vehicle, the vehicle control section notifies the arbitration section of a predetermined value as the control value.

3. The powertrain ECU according to claim 1, wherein physical quantities are used as information including the calculation results and the arbitration result, which is transmitted and received between the vehicle control section and the unit control section.

4. The powertrain ECU according to claim 1, wherein

a microcomputer of the vehicle control section has two cores;

and

one of the cores is a dedicated core for communication processing.

5. The powertrain ECU according to claim 1, wherein an input circuit section of the vehicle control section comprises a configurable hardware that can set or change circuit characteristics and a logic circuit by software.

6. The powertrain ECU according to claim 1, wherein:

the vehicle control section includes a vehicle equipment control program that calculates the received data to be used for controlling the engine and the transmission; and

the unit control section comprises powertrain control programs unique to the engine and the transmission.

9. The powertrain ECU according to claim 1, wherein the plurality of vehicle equipments includes at least one of an intelligent parking assist, an adaptive cruise control system, a shift control system and an air conditioner.

7. A method for controlling a vehicle having a powertrain electronic control apparatus (ECU) that controls only a powertrain unit including an engine and a transmission mounted on a vehicle, the powertrain ECU being communicatable with a plurality of other ECUs that control a plurality of vehicle equipments other than the powertrain unit, the powertrain ECU comprising:

a vehicle control section that receives data from the plurality of other ECUs or the plurality of vehicle equipments, and a unit control section that controls a function of the powertrain unit, wherein the vehicle control section is disposed on a first software platform which is implemented on a first hardware and the unit control section is disposed on a second software platform which is different from the first software platform and is implemented on a second hardware which is different from the first hardware, wherein the vehicle control section includes a plurality of softwares, each of which corresponds to a different one of the plurality of vehicle equipments, the plurality of softwares calculate the received data and output calculation results to the unit control section, the method comprising;

calculating at least one of the driving force and the torque required or consumed by the plurality of vehicle equipments;

arbitrating each requirement from the plurality of vehicle equipments or each consumption amount of the plurality of vehicle equipments; and

controlling the powertrain unit based on results of calculation and arbitration to the unit control section.

8. The method according to claim 7, further comprising:

determining whether or not one of the plurality of vehicle equipments is mounted on the vehicle, and controlling the powertrain unit based on a result of determination.