Simulation device and simulation method

• US 20090157365A1
• Filed: 12/15/2008
• Published: 06/18/2009
• Est. Priority Date: 12/18/2007
• Status: Abandoned Application

• Current Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Original Assignee: Fujitsu Ten Limited (DENSO Corporation)
• Inventors: Yamasaki, Takeshi, Nakai, Toshio, Higuchi, Takashi
• Application Number:
  US12/314,660
• Publication Number:
  US 20090157365A1
• Time in Patent Office: Days
• US Class Current: 703/8
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: G06F 30/15 Vehicle, aircraft or watercraft design
• CPC Class Codes: G06F 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30

Abstract

Provided is a simulation device including: a simple model computing portion for generating simulation information by correcting measured information sampled on a real vehicle on the basis of control information input from an electronic control unit; and an outputting portion for outputting the simulation information generated by the simple model computing portion to the electronic control unit. The simulation device generates the simulation information generated by the simple model computing portion as new measured information.

Claims

1. A simulation device connected to an electronic control unit targeted for evaluation in order to output thereto simulation information of a real vehicle in response to control information output from the electronic control unit, the simulation device comprising:

a measured information storing portion for storing measured information obtained from an actual travel of the real vehicle;

a simple model computing portion for generating simulation information by correcting the measured information on the basis of control information output from the electronic control unit; and

an outputting portion for outputting the simulation information generated by the simple model computing portion to the electronic control unit.

2. The simulation device according to claim 1, wherein the simple model computing portion generates the simulation information by correcting measured information that is measured control information included in the measured information and corresponds to the simulation information on the basis of control information output from the electronic control unit.

3. The simulation device according to claim 1, wherein:

the measured information includes;

road profile information obtained from a travel of the real vehicle; and

relative speed information and relative distance information obtained from vehicle speed information of the real vehicle corresponding to the road profile information with respect to another vehicle; and

the simple model computing portion outputs, as the simulation information, the relative speed information and relative distance information obtained from the vehicle speed information of the real vehicle with respect to the other vehicle after correcting the measured information on the basis of the control information output from the electronic control unit.

4. The simulation device according to claim 1, wherein:

the simple model computing portion calculates a difference between the measured information and the simulation information generated by correcting the measured information; and

when the difference deviates from a predetermined range, the simple model computing portion ends the simulation.

5. The simulation device according to claim 1, wherein the simple model computing portion calculates a difference between the control information output from the electronic control unit and measured control information included in the measured information and corresponding to the control information, and generates the simulation information by correcting the measured information on the basis of the difference.

6. The simulation device according to claim 1, wherein:

the measured information includes vehicle state information indicating a state of the real vehicle and environment state information indicating an environment in which the real vehicle travels;

the simple model computing portion calculates a difference between the control information output from the electronic control unit and measured control information included in the measured information and corresponding to the control information, and corrects the vehicle state information on the basis of the difference;

the simple model computing portion calculates a difference between the corrected vehicle state information and measured vehicle state information included in the measured information and corresponding to the vehicle state information, and corrects the environment state information on the basis of the difference; and

the simple model computing portion renders the corrected vehicle state information and the corrected environment state information the simulation information.

7. A simulation method comprising:

a measuring step of collecting, as measured information, a signal measured during an actual travel of a vehicle;

a simulation step of generating simulation information by correcting the measured information collected in the measuring step on the basis of the measured information and control information output from an electronic control unit targeted for evaluation, and outputting the generated simulation information to the electronic control unit; and

a recording step of recording a signal measured during the simulation step.