 System for reducing powertrain reaction torque |
| A system is provided for controlling inertial forces within a vehicle powertrain during certain ... |
|
| Automatic lawn mower vehicle |
| An automatic mower vehicle is comprised of a drive-wheel assembly, a trailing sulky carrying an ... |
|
| Position determining apparatus and control method of robot |
| The present invention has been made in view of the above-described problem occuring in the prior ... |
|
| Robot obstacle detection system |
| It is therefore an object of this invention to provide a robot obstacle detection system which is ... |
|
| Method of detecting false data recording media and a data recording medium therefor |
| It is therefore an object of the present invention to provide a method of detecting false or ... |
|
| Method and apparatus for adaptive classification |
| In accordance with the present invention, a neural network and methods of operation within such a ... |
|
| Adaptive classifier having multiple subnetworks |
| In accordance with the present invention, a neural network and methods of operation within such a ... |
|
| Telephone fraud detection system |
| OF THE INVENTION Referring to FIG. 1, MCI Detect architecture 10 consists of three basic systems: M... |
|
|
Electronic control apparatus including microcomputers for controlling some of the systems found in a vehicle
| Details |
Inventors: Niimi, Yukihide; Harada, Takashi; Kobayashi, Akio; Tachi, Ryosuke; Matsui, Takeshi;
Assignee: Nippondenso Co., Ltd. (Kariya, JP)
Primary Examiner: Lall; Parshotam S.
Assistant Examiner:
Attorney, Agent or Firm: Cushman, Darby & Cushman
An electronic control apparatus for use in vehicles comprised of two, one-chip microcomputers. The microcomputers each have a ROM and a RAM and are used to control different systems provided in the vehicle. The ROM of the second microcomputer stores an operational program which can be used to calculate control values for controlling various types of devices. It also stores operational map data which can be used to calculate control values for controlling various types of devices. Various signals output by the sensors provided in the vehicle are supplied to both microcomputers. At the start of the power supply to the apparatus, the operational map data stored in the ROM of the first microcomputer, which is to be used by the second microcomputer, is transferred to the RAM of the second microcomputer. The second microcomputer calculates a control value from the transferred operational map data, the signals output by the sensors and other data, thereby controlling the system assigned to it. |
|
DETAILED DESCRIPTION Accordingly, it is one object of this invention to provide an electronic control apparatus of a relatively simple structure, comprising a few one-chip microcomputers designed to control the engine and some additional systems of a vehicle.
Another object of the invention is that of an electronic control apparatus, comprising a few one-chip microcomputers, designed to control the engine and some additional systems and which can easily be modified to control the engine and a few other systems of a vehicle.
A further object of the invention is to provide an electronic control apparatus having a few one-chip microcomputers and designed to control the engine and some additional systems of vehicles of various types.
The present invention provides an electronic control apparatus which has two one-chip microcomputers, each having at least one ROM, at least one RAM and a few input/output circuits.
Data is transferred between the microcomputers in the initial step of the operation.
The operational map stored in the ROM of the first microcomputer is supplied to the RAM of the second microcomputer.
Two microcomputers operate independently and calculate different control values.
The control values control the control circuits provided within the vehicle.
The control apparatus can control different control circuits since the first and second microcomputers function independently.
More specifically, the ROM of the first microcomputer stores the program for calculating a first control value for controlling one control circuit and an operational map to be used in calculating this control value.
It also stores another operational map to be used by the second microcomputer to calculate a second control value for controlling a control circuit which is used in place of the circuit to which the second microcomputer is assigned.
In the initial step of the operation, the operational map for calculating the first control value is suppled to the RAM of the second microcomputer.
Then, the second microcomputer calculates the second control value from this map in accordance with the program stored in its ROM
|
| Related patents |
|
|
Processing system having a storage set with data designating operation state from operation states in instruction memory set with application specific block
It is an object of the present invention to provide a DSP that is particularly applicable to ASIC, application specific integrated circuit, whereby the DSP may be ...
|
|
|
Smart disconnect switch interbase
OF INVENTION The following detailed description illustrates the invention by way of example and not by way of limitation. This description will clearly enable one ...
|
|
|
Rumble strip cutter wheel
Since the completion of interstate highway system in this Country, experts have come to realize that the uniformity of the interstate highway system can be almost ...
|
|
|
Method and apparatus for cutting rumble strips in a roadway
A self-propelled machine for cutting rumble strips in the surface of a roadway and which comprises an improvement over known and currently available machines is provided....
|
|
|
Passive pavement-mounted acoustical linguistic drive alert system and method
This invention provides a method and apparatus for conveying specific messages in the form of words or other audible sounds to the driver and/or other occupants of ...
|
|
|
Method and apparatus for cutting rumble strips in roads
It is an object of the present invention to provide a machine for creating rumble strips that conserves energy. It is a further object of the present invention to ...
|
|
|
Mosquito dispersing device
OF THE INVENTION The invention relates to a mosquito dispersing device comprising means for generating a mosquito dispersing pitch pattern having a frequency in the ...
|
|
|
Apparatus and method for driver-specific setting on vehicle devices
OF THE PREFERRED EMBODIMENT Here, and in the following claims, "key" means any encoded device such as a mechanical key (e.g., with teeth, prongs, etc), a magnetic key ...
|
|
|
Image qualification for optical navigation sensor
It is therefore an object of the present invention to provide an image qualification in real time for an optical navigation sensor. To achieve the above objects, the ...
|
|
|
Control strategy for diesel engine auxiliary loads to reduce emissions during engine power level changes
The present invention provides improved control over the auxiliary loads, i.e. over the auxiliary power demand of a diesel engine during notch or throttle position ...
|
|
|
Navigation and GPS 
