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Vehicle speed control apparatus in accordance with curvature of vehicle trajectory

A technology of speed control device and vehicle, applied in control device, speed/acceleration control, vehicle accessories, etc., can solve the problems of undisclosed and unobtainable road curvature information.

Active Publication Date: 2008-12-10
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To give an obvious example, the road curvature information cannot be obtained when turning left and right at an intersection
In addition, in Patent Document 1, there is only the concept of "preliminary deceleration if there is a corner ahead", and there is no disclosure on how to control the speed according to the change of curvature observed in the vehicle in order to meet the driver's feeling.

Method used

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  • Vehicle speed control apparatus in accordance with curvature of vehicle trajectory
  • Vehicle speed control apparatus in accordance with curvature of vehicle trajectory
  • Vehicle speed control apparatus in accordance with curvature of vehicle trajectory

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Experimental program
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Embodiment Construction

[0048] exist Figure 4 , represents the overall composition for realizing the best embodiment.

[0049] In the present embodiment, the vehicle 0 is configured by a so-called by wire system, and there is no mechanical connection between the driver and the steering mechanism, acceleration mechanism, and deceleration mechanism. In addition, the steering wheel 16 , the accelerator pedal 10 , and the brake pedal 11 , which are operated by the driver, each have an operation amount detection sensor and a reaction force generating mechanism.

[0050]

[0051] Vehicle 0 is a rear-wheel drive vehicle (Rear Motor Rear Drive: RR vehicle) in which a motor 1 drives a left rear wheel 63 and a right rear wheel 64 . Connected to the motor 1 is a reduction mechanism 2 that reduces the driving force of the motor. Here, in particular, the drive wheel system of the front and rear wheels, and the difference in power sources such as electric motors and internal combustion engines are not closely...

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PUM

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Abstract

In order to fit a driver's driving feeling, a vehicle speed control system includes a unit calculating the instantaneous curvature and a unit controlling a vehicle speed, and controls to reduce the vehicle speed when the instantaneous curvature tends to increase and to enhance the vehicle speed when the instantaneous curvature tends to decrease.

Description

technical field [0001] The present invention relates to a device for controlling the speed of a vehicle based on the curvature of a path. Background technique [0002] As prior art, Patent Document 1 discloses a vehicle travel control device capable of setting a steering speed according to the driver's preference, which includes a road curvature information detection unit that detects the curvature or curvature of the road. radius; a corner detection unit, which detects the presence of a corner in front of the vehicle according to the road curvature or curvature radius detected by the road curvature information detection unit; The radius of curvature or curvature of the corner and the recommended steering lateral acceleration corresponding to the radius of curvature or curvature calculate the recommended steering speed of the corner; the target deceleration computing unit, which is based on the current vehicle speed of the vehicle, the recommended steering speed and the a d...

Claims

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Application Information

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IPC IPC(8): B60W30/08B60W30/14B60W40/04G08G1/16B60K31/00B60R21/00B60W10/04B60W10/06B60W10/10B60W10/18B60W10/184B60W10/20B60W30/00B60W30/045B60W50/14B60W50/16B62D5/04B62D6/00B62D101/00B62D103/00B62D107/00B62D113/00
CPCB60K31/0066B60W10/06B60W10/20B60W40/072B60W40/076B60W2720/106B60W2552/20B60W2552/30B60W30/10G08G1/16
Inventor 山门诚横山笃安部正人
Owner HITACHI ASTEMO LTD
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