Apparatus for detecting an overturning moment in a moving vehicle, and jackknifing in a trailer-truck combination
First Claim
1. An apparatus for detecting an incipient overturning moment in a truck-trailer combination travelling in a movement direction, said truck trailer combination being equipped with a brake pedal member, an acceleration pedal member, and a steering member, comprising in combination,position-controlling servomechanism means,centrifugal force measuring means for generating a pressure-indicating signal in dependence of a centrifugal force acting on said vehicle in a generally lateral direction transverse to said movement direction, includingroad-curvature indicating means for operatively measuring the curvature of a road travelled on by said truck-trailer combination,speed-indicating means for measuring the speed of said truck-trailer combination, said overturning moment being a function of said road curvature, and of said speed,combining means for determining from the measured road curvature, and from the measured speed a parameter indicating-signal indicative of said incipient overturning moment, andparameter indicating-signal to error signal conversion means for generating an error signal, and being arranged to transmit said error signal to said servomechanism means,said servomechanism means amplifying said error signal, and being adapted to transmit a position-controlling force to at least one of said members so as to act thereon in a sense to reduce said incipient overturning moment, whereby turning over of said vehicle is prevented.
0 Assignments
0 Petitions
Accused Products
Abstract
In an apparatus for detecting an incipient overturning moment acting on a vehicle, detection is accomplished by means of a sensing arrangement, which measures the centrifugal force to which the vehicle is subjected to, along a generally lateral direction transverse to the direction of movement of the vehicle. The sensing arrangement operates in cooperation with a force-amplifying device which, in turn, amplifies the measured force, and transmits the amplified force to the brake, and/or the acceleration pedal, and/or the steering wheel of the vehicle so as to act thereon in a sense to eliminate or at least reduce the incipient overturning moment.
-
Citations
10 Claims
-
1. An apparatus for detecting an incipient overturning moment in a truck-trailer combination travelling in a movement direction, said truck trailer combination being equipped with a brake pedal member, an acceleration pedal member, and a steering member, comprising in combination,
position-controlling servomechanism means, centrifugal force measuring means for generating a pressure-indicating signal in dependence of a centrifugal force acting on said vehicle in a generally lateral direction transverse to said movement direction, including road-curvature indicating means for operatively measuring the curvature of a road travelled on by said truck-trailer combination, speed-indicating means for measuring the speed of said truck-trailer combination, said overturning moment being a function of said road curvature, and of said speed, combining means for determining from the measured road curvature, and from the measured speed a parameter indicating-signal indicative of said incipient overturning moment, and parameter indicating-signal to error signal conversion means for generating an error signal, and being arranged to transmit said error signal to said servomechanism means, said servomechanism means amplifying said error signal, and being adapted to transmit a position-controlling force to at least one of said members so as to act thereon in a sense to reduce said incipient overturning moment, whereby turning over of said vehicle is prevented.
-
7. An apparatus for detecting an incipient overturning moment in a vehicle travelling in a movement direction, said vehicle being equipped with a brake pedal member, an acceleration pedal member, and a steering member, comprising in combination,
position-controlling servomechanism means, centrifugal force measuring means, including a pressure-to-electrical signal transducer for generating a pressure-indicating signal in dependence of a centrifugal force acting on said vehicle in a generally lateral direction transverse to said movement direction, pressure-indicating-signal to error-signal conversion means coupled to an output of said pressure-to-electrical signal transducer, and providing an error signal at its output, said servomechanism means accepting and amplifying said error signal, and being adapted to transmit a position-controlling force related to said error signal to at least one of said members, so as to act thereon in a sense to reduce said incipient overturning moment, whereby turning over of said vehicle is prevented.
Specification