Vehicle electric control system with input device connected to central and peripheral control devices for controlling actuator

• US 6,476,515 B1
• Filed: 08/15/2000
• Issued: 11/05/2002
• Est. Priority Date: 09/02/1999
• Status: Expired due to Term

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Yamamoto, Takayuki, Sawada, Naoki, Kojima, Seiichi, Niwa, Satoru, Aizawa, Hiroaki
• Primary Examiner(s): Jackson, Stephen W.
• Assistant Examiner(s): Deberadinis, Robert L
• Application Number:
  US09/639,009
• Time in Patent Office: 812 Days
• Field of Search: 307/10.1, 307/9.1, 303/9, 303/9.61, 303/122.01, 303/122.02, 303/122.03, 303/122.04, 303/122.05, 303/122.06, 303/20, 701/70
• US Class Current: 307/10.1
• CPC Class Codes: B60T 13/74 with electrical assistance or drive
• CPC Class Codes: B60T 2270/402 Back-up
• CPC Class Codes: B60T 7/042 by electrical means, e.g. using travel or force sensors
• CPC Class Codes: B60T 8/321 deceleration B60T8/34, B60T8/52, B60T8/54, B60T8/56, B60T8/58, B60T8/72, B60T8/86, B60T8/88 take precedence
• CPC Class Codes: B60T 8/92 automatically taking corrective action

Abstract

An electric control system for an automotive vehicle, including a peripheral control device for electrically controlling an actuator device, a central control device connected to the peripheral control device, and an input device, wherein the central control device and the peripheral control device cooperate with each other to control the actuator device on the basis of an output of the input device. The input device is connected to both of the central control device and the peripheral control device.

Claims

1. An electric control system for electrically controlling an actuator device of an automotive vehicle, including:

a peripheral control device operable to electrically control said actuator device;

a central control device connected to said peripheral control device;

an input device connected to both of said central control device and said peripheral control device;

said central control device and said peripheral control device cooperating with each other to control said actuator device on the basis of an output of said input device; and

at least two power source devices which are mutually independently connected to said central control device.

2. An electric control system for an automotive vehicle according to claim 1, wherein said input device includes a sensor operable to generate an output signal representative of a physical quantity.

3. An electric control system for an automotive vehicle according to claim 2, wherein said sensor is operable to detect at least one of an operating force and an operating stroke of a manually operated member which is operable by an operator.

4. An electric control system for an automotive vehicle according to claim 1, wherein said actuator device includes a plurality of actuators, and said peripheral control device includes a plurality of peripheral control devices connected to said plurality of actuators, respectively, and wherein said input device is connected to at least one of said plurality of peripheral control devices.

5. An electric control system for an automotive vehicle according to claim 4, wherein said input device is connected to at least two of said plurality of peripheral control devices.

6. An electric control system for an automotive vehicle according to claim 5, wherein said input device is connected to all of said plurality of peripheral control devices.

7. An electric control system, for an automotive vehicle according to claim 1, wherein said input device includes a plurality of input devices whose output signals represent different kinds of information all of said plurality of input devices being connected to said central control device and said peripheral control device.

8. An electric control system for an automotive vehicle according to claim 1, wherein said peripheral control device consists of a plurality of peripheral control devices, and said input device includes a plurality of input devices whose output signals represent a same kind of information, all of said input devices being connected to said central control device, one of said plurality of input devices being connected to at least one of said plurality of peripheral control devices while another of said plurality of input devices being connected to another of said plurality of peripheral control devices.

9. An electric control system for an automotive vehicle according to claim 1, wherein said actuator device includes a plurality of actuators, and said peripheral control device includes a plurality of peripheral control devices connected to said plurality of actuators, respectively, at least one of at least two power source devices being connected to at least one of said peripheral control devices while at least another of said at least two power source devices being connected to at least another of said peripheral control devices.

10. An electric control system for an automotive vehicle according to claim 1, wherein said at least two power source devices are mutually independently connected to said input device.

11. An electric control system for an automotive vehicle according to claim 1, wherein said central control device includes a main computer for controlling said actuator device, and a monitoring computer for diagnosing said main computer, each of said at least two power source devices being connected to both of said main and monitoring computers.

12. An electric control system for an automotive vehicle according to claim 1, wherein said central control device includes a plurality of computers capable of performing a same function, each of said at least two power source devices being connected to said plurality of computers.

13. An electric control system for an automotive vehicle according to claim 1, wherein said actuator device includes four actuators in the form of four brakes constructed to brake a front left wheel, a front right wheel, a rear left wheel and a rear right wheel of the automotive vehicle, respectively, and said peripheral control device includes four brake control devices operable to control said four brakes, respectively, at least one of said at least two power source devices being connected to the two brake control devices corresponding to said front left and rear right wheels which are located diagonally with respect to each other in the automotive vehicle, at least another of said at least two power source devices being connected to the two other brake control devices corresponding to said front right and rear left wheels which are located diagonally with respect to each other in the automotive vehicle.

14. An electric control system for electrically controlling four brakes respectively constructed to brake a front left wheel, a front right wheel, a rear left wheel and a rear right wheel of an automotive vehicle, including:

four brake control devices respectively operable to electrically control said four brakes, respectively, said four brake control devices including two brake control devices for controlling the respective two brakes for braking said front left and right wheels;

said two brake control devices being connected to each other;

a central control device connected to said four brake control devices;

an input device connected to both of said central control device and said four brake control devices; and

said central control device and said four brake control devices cooperating with each other to control said four brakes on the basis of an output of said input device,

wherein one of said two brake control devices controls an operation of the other of said two brake control devices when said central control device is defective.

15. An electric control system for an automotive vehicle according to claim 14, wherein each of said at least two brake control devices connected to each other is connected to said central control device.

16. An electric control system for an automotive vehicle according to claim 14, wherein said input device is connected to each of said two brake control devices.

17. An electric control system for electrically controlling two rear-wheel brakes and two front-wheel brakes which are respectively constructed to brake a rear left wheel, a rear right wheel, a front left wheel and a front right wheel of an automotive vehicle, including:

a common rear-brake control device operable to control said two rear-wheel brakes, respectively;

two front-brake control devices operable to control said two front-wheel brakes, respectively;

a central control device connected to said common rear-brake control device and said two front-brake, control devices; and

an input device connected to said central control device, said common rear-brake control device and said two front-brake control devices,

said central control device, said common rear-brake control device and said two front-brake control devices cooperating with each other to control said two rear-wheel brakes and said two front-wheel brakes on the basis of an output of said input device.

18. An electric control system for an automotive vehicle according to claim 17, wherein said rear-brake control device includes an independent rear-brake control portion operable to control said two rear-wheel brakes in respective different manners.

19. An electric control system for an automotive vehicle according to claim 17, wherein said rear-brake control device includes a common rear-brake control portion operable to control said two rear-wheel brakes in a same manner.

20. An electric control system for an automotive vehicle according to claim 17, wherein said rear-brake control device includes a one-rear-brake control portion operable to operate one of said two rear-wheel brakes when the other of said two rear-wheel brakes is defective.

21. An electric control system for electrically controlling an actuator device of an automotive vehicle, including:

a peripheral control device operable to electrically control said actuator device;

an input device;

a central control device connected to said peripheral control device and operable such that said central control device and said peripheral control device cooperate with each other to control said actuator device on the basis of an output of said input device; and

at least two power source devices which are mutually independently connected to said central control device.