COLLISION DETECTING APPARATUS AND METHOD - MATSUSHITA ELECTRIC IND CO LTD

Title:

COLLISION DETECTING APPARATUS AND METHOD

Document Type and Number:

Japanese Patent JP2005312149

Kind Code:

A

Abstract:

To enable a vehicle to run while the vehicle is detecting a collision to an obstacle stably.

A collision detecting apparatus detects the rotating speed of a DC motor during running of the vehicle, compares its output signal with a rotating speed command signal to give proportional/integrating characteristics, converts the output signal into a PWM signal, discriminates whether it is an abnormal condition with the variation of the duty ratio and the rotational speed of the DC motor, gives the PWM signal to the DC motor if normal, and standbys for a predetermined time, measures the time duration during which the abnormal condition continues, if abnormal, and compares the output signal with a predetermined prescribed threshold value for detecting the abnormality, and stops the DC motor if the output signal of the compared result is abnormal.

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Inventors:

HORISAKI KOHEI
SHIROMIZU HIROSHI
MIYAZAKI NAOKI

Application Number:

JP2004123955A

Publication Date:

November 04, 2005

Filing Date:

April 20, 2004

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

B60L3/00; B60L3/04; B60L3/08; H02P3/08; H02P7/29; (IPC1-7): H02P5/17; B60L3/00; B60L3/04; B60L3/08

Attorney, Agent or Firm:

Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito

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