Autonomous vehicle capable of traveling/stopping in parallel to wall and controlling method thereof
First Claim
1. An autonomous vehicle, comprising:
- a body;
direction detection means attached to said body for detecting the moving direction of said body;
driving means for moving said body; and
control means for controlling said driving means to move straightforward and/or turn said body,said control means including first direction correction means receiving the output of said direction detection means for correcting the moving direction of said body after traveling based on the difference between the directions of said body before and after traveling.
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Abstract
An autonomous vehicle capable of traveling and stopping parallel to a wall includes right and left driving wheels receiving driving force to be driven independently, a dependent wheel for supporting the autonomous vehicle together with the driving wheels for a straightforward movement and a U-turn, a motor for driving the right and left driving wheels, a coupling mechanism for transmitting the rotation of the motor to the driving wheels, an encoder for detecting the rotation amount and velocity of the motor, a gyro sensor for detecting the direction of the autonomous vehicle, a distance measurement sensor for measuring the distance to a right or left object of interest, and a controller for controlling the autonomous vehicle through the motor and the driving wheels. The controller receives the output of the encoder, calculates a control value for the driving wheels based on the rotation amount and rotation velocity of the motor, and determines that the autonomous vehicle travels parallel to the wall if the ratios of a time period to turn the autonomous vehicle rightward and a time period to turn the vehicle leftward in a prescribed time period are equal based on the control value.
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Citations
19 Claims
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1. An autonomous vehicle, comprising:
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a body; direction detection means attached to said body for detecting the moving direction of said body; driving means for moving said body; and control means for controlling said driving means to move straightforward and/or turn said body, said control means including first direction correction means receiving the output of said direction detection means for correcting the moving direction of said body after traveling based on the difference between the directions of said body before and after traveling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An autonomous vehicle, comprising:
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a body; a driving wheel, a gyro sensor attached to said body for detecting the moving direction of said body; a motor for driving said driving wheel; and a control unit for controlling said motor to move straightforward and/or turn said body, said control unit correcting the direction of said body after traveling based on the difference between the directions before and after traveling based on an output received from said gyro sensor. - View Dependent Claims (12, 13)
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14. A method of controlling an autonomous vehicle having a driving wheel to control a body to travel and turn in an arbitrary direction by controlling said driving wheel, comprising:
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a step of direction detecting to detect the moving direction of said body before traveling; determining that the moving direction of said body after traveling is different from the moving direction of said body before traveling; and operating said driving wheel such that the moving direction of said body after traveling is in coincidence with the moving direction of said body before traveling by correcting the moving direction of the body by a prescribed amount if the moving direction after traveling is different from the moving direction before traveling. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification