Control apparatus for utility vehicle
First Claim
1. An apparatus for controlling operation of a utility vehicle that detects a boundary of a working area and is driven by a prime mover to run within the working area based on the detected boundary, comprising:
- a sensor installed on the utility vehicle and produces outputs indicating the boundary of the working area; and
an electronic control unit having a microprocessor and a memory,wherein the microprocessor is configured to function as;
a running control unit configured to control operation of the prime mover such that the vehicle turns in accordance with a first turning mode to make the vehicle turn while running near the boundary at a desired turning radius and a first desired turning angle and a second turning mode to make the vehicle pause near the boundary and then turn at a second desired turning angle when it is determined from the outputs of the sensor that the vehicle approaches the boundary;
a mode setting unit configured to initially set one of the first turning mode and the second turning mode at beginning of operation; and
a mode switching unit configured to switch the turning mode between the first turning mode and the second turning mode each time it is determined that a predetermined condition including at least one of an operating time of and a number of turns of the vehicle is satisfied,wherein the running control unit controls operation of the prime mover such that the vehicle turns in accordance with the switched turning mode.
1 Assignment
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Accused Products
Abstract
In an apparatus for controlling operation of a utility vehicle that detects a magnetic field generated by electric current flowing through a boundary wire of a working area and is driven to run within the working area based on the detected magnetic field, having left and right magnetic sensor installed at lateral right and left positions of the vehicle to produce outputs proportional to strength of the magnetic field, turning mode is switched between gentle turning mode to make the vehicle turn while running near the boundary wire and sharp turning mode to make the vehicle pause near the boundary wire and then turn, when it is determined from the outputs of the magnetic sensors that the vehicle approaches the boundary wire, each time predetermined conditions are satisfied, and operation of the prime mover is controlled such that the vehicle turns in accordance with the switched turning mode.
4 Citations
14 Claims
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1. An apparatus for controlling operation of a utility vehicle that detects a boundary of a working area and is driven by a prime mover to run within the working area based on the detected boundary, comprising:
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a sensor installed on the utility vehicle and produces outputs indicating the boundary of the working area; and an electronic control unit having a microprocessor and a memory, wherein the microprocessor is configured to function as; a running control unit configured to control operation of the prime mover such that the vehicle turns in accordance with a first turning mode to make the vehicle turn while running near the boundary at a desired turning radius and a first desired turning angle and a second turning mode to make the vehicle pause near the boundary and then turn at a second desired turning angle when it is determined from the outputs of the sensor that the vehicle approaches the boundary; a mode setting unit configured to initially set one of the first turning mode and the second turning mode at beginning of operation; and a mode switching unit configured to switch the turning mode between the first turning mode and the second turning mode each time it is determined that a predetermined condition including at least one of an operating time of and a number of turns of the vehicle is satisfied, wherein the running control unit controls operation of the prime mover such that the vehicle turns in accordance with the switched turning mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for controlling operation of a utility vehicle that detects a boundary of a working area and is driven by a prime mover to run within the working area based on the detected boundary, having:
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a sensor installed on the utility vehicle and produces outputs indicating the boundary of the working area;
comprising the steps of;controlling operation of the prime mover such that the vehicle turns in accordance with a first turning mode to make the vehicle turn while running near the boundary at a desired turning radius and a first desired turning angle and a second turning mode to make the vehicle pause near the boundary and then turn at a second desired turning angle when it is determined from the outputs of the sensor that the vehicle approaches the boundary; initially setting one of the first turning mode and the second turning mode at beginning of operation; and switching the turning mode between the first turning mode and the second turning mode each time it is determined that a predetermined condition including at least one of an operating time of and a number of turns of the vehicle is satisfied, wherein the step of controlling operation of the prime mover controls operation of the prime mover such that the vehicle turns in accordance with the switched turning mode. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification