Apparatus for controlling movement of vehicle
First Claim
1. An apparatus for controlling the movement of a vehicle, wherein said apparatus includes electric wave transmitting means for transmitting a first electric wave, a second electric wave and a third electric waves in synchronization with each other from predetermined positions on the ground different from each other and an unit mounted on said vehicle and wherein said unit mounted on the vehicle comprises;
- a first antenna and a second antenna arranged on the vehicle in parallel with each other with a predetermined distance kept therebetween,first time difference detecting means for detecting the difference between the time when said first electric wave reaches said first antenna and the time when said second electric wave reaches said first antenna as well as the difference between the time when said first electric wave reaches said first antenna and said third electric wave reaches said first antenna, in response to said first electric wave, said second electric wave and said third electric wave each of which is received by said first antenna,position detecting means for detecting the position where the vehicle is presently located, based on said time differences detected by said first time difference detecting means,second time difference detecting means for detecting the difference between the time when said first electric wave reaches said first antenna and the time when said first electric wave reaches said second antenna, in response to said first electric wave received by said first antenna and said second antenna,attitude angle detecting means for detecting the attitude angle with which the vehicle is moving, based on said time difference detected by said second time difference detecting meansstoring means for allowing target courses for the vehicle to be stored therein,calculating means for calculating a steering angle command for allowing the vehicle to move along one of said target courses, based on the position where the vehicle is presently located, the attitude angle with which the vehicle is moving and the target courses, andsteering control means for controlling a steering angle to be assumed by the vehicle to a certain magnitude in conformity with said steering angle command.
1 Assignment
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Accused Products
Abstract
An apparatus for controlling the movement of a vehicle such as a damp truck or the like so as to allow the movement of the vehicle to be correctly induced is disclosed. With the apparatus constructed to the present invention, a first electric wave (m1), a second electric wave (m2) and a third electric wave (m3) are transmitted in synchronization with each other from predetermined locations on the ground different from each other. Then, the electric wave (m1), the electric wave (m2) and the electric wave (m3) are received by two antennas mounted on the vehicle (20), whereby the position where the vehicle (20) is presently located and the attitude angle assumed by the vehicle (20) are detected based on the difference between the time the electric wave (m1) reaches the vehicle (20) and the time when the electric wave (m2) reaches the vehicle (20) as well as the difference between the time when the electric wave (m1) reaches the vehicle (20) and the time when the electric wave (m3) reaches the vehicle (20).
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Citations
7 Claims
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1. An apparatus for controlling the movement of a vehicle, wherein said apparatus includes electric wave transmitting means for transmitting a first electric wave, a second electric wave and a third electric waves in synchronization with each other from predetermined positions on the ground different from each other and an unit mounted on said vehicle and wherein said unit mounted on the vehicle comprises;
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a first antenna and a second antenna arranged on the vehicle in parallel with each other with a predetermined distance kept therebetween, first time difference detecting means for detecting the difference between the time when said first electric wave reaches said first antenna and the time when said second electric wave reaches said first antenna as well as the difference between the time when said first electric wave reaches said first antenna and said third electric wave reaches said first antenna, in response to said first electric wave, said second electric wave and said third electric wave each of which is received by said first antenna, position detecting means for detecting the position where the vehicle is presently located, based on said time differences detected by said first time difference detecting means, second time difference detecting means for detecting the difference between the time when said first electric wave reaches said first antenna and the time when said first electric wave reaches said second antenna, in response to said first electric wave received by said first antenna and said second antenna, attitude angle detecting means for detecting the attitude angle with which the vehicle is moving, based on said time difference detected by said second time difference detecting means storing means for allowing target courses for the vehicle to be stored therein, calculating means for calculating a steering angle command for allowing the vehicle to move along one of said target courses, based on the position where the vehicle is presently located, the attitude angle with which the vehicle is moving and the target courses, and steering control means for controlling a steering angle to be assumed by the vehicle to a certain magnitude in conformity with said steering angle command. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification