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公开(公告)号：US11565750B2
公开(公告)日：2023-01-31
申请号：US16699990
申请日：2019-12-02
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang , Aaron Smith , Jay E. Maggard
Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.
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Patent Agency Ranking
公开(公告)号：US20200172166A1
公开(公告)日：2020-06-04
申请号：US16699990
申请日：2019-12-02
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang , Aaron Smith , Jay E. Maggard
Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.
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公开(公告)号：US11519733B2
公开(公告)日：2022-12-06
申请号：US16700885
申请日：2019-12-02
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang
IPC: G01C21/20 , A01D34/00 , G05D1/00 , G05D1/02 , A01D101/00
Abstract: A method for autonomous mower navigation includes performing a training operation for an area including identifying a GPS signal associated with a training apparatus, iteratively recording data associated geolocations of the training apparatus as the training apparatus moves along a trajectory through the area, smoothing the geolocation data associated with the trajectory, and storing the smoothed geolocation data. The method can include subsequent to the training operation, performing a greens association process including establishing a link between the autonomous mower and an RTK-GPS base, receiving by the autonomous mower correction data from the RTK-GPS base, and determining an approach angle to a work area, wherein the path the autonomous mower travels to the work zone is defined by the approach angle.
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公开(公告)号：US20200173784A1
公开(公告)日：2020-06-04
申请号：US16700885
申请日：2019-12-02
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang
Abstract: A method for autonomous mower navigation includes performing a training operation for an area including identifying a GPS signal associated with a training apparatus, iteratively recording data associated geolocations of the training apparatus as the training apparatus moves along a trajectory through the area, smoothing the geolocation data associated with the trajectory, and storing the smoothed geolocation data. The method can include subsequent to the training operation, performing a greens association process including establishing a link between the autonomous mower and an RTK-GPS base, receiving by the autonomous mower correction data from the RTK-GPS base, and determining an approach angle to a work area, wherein the path the autonomous mower travels to the work zone is defined by the approach angle.
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公开(公告)号：US20230174154A1
公开(公告)日：2023-06-08
申请号：US18103114
申请日：2023-01-30
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang , Aaron Smith , Jay E. Maggard
CPC classification number: B62D11/10 , A01D34/008 , B60W10/20 , B62D1/283 , B62D6/002 , G05D1/02 , B60W2300/15
Abstract: A system and method for differential traction drive and steering axis coordination for an autonomous mower or other turf device includes initiating a steering motion based on determining a target forward speed and a steering rotational speed, calculating a left wheel speed and a right wheel speed, and applying the left and right wheel speeds, wherein the steering rotational speed is driven by a steering motor and the traction wheels associated with the autonomous mower, and the left and right wheel speeds are based on the target forward speed, a distance from a steering axle to the center of the respective wheel, and the steering rotational speed.
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公开(公告)号：US20230094756A1
公开(公告)日：2023-03-30
申请号：US18073600
申请日：2022-12-02
Applicant: MTD PRODUCTS INC
Inventor： Her-Jye Chang
Abstract: A system for autonomous mower navigation includes a robotic golf greens mower, an RTK-GPS base for providing RTK-GPS correction data, a cloud based data processing service for processing geolocation data, one or more computer servers, one or more mobile devices, a data communications network for providing communications access between any of the RTK-GPS base, the mobile device, the cloud service, and the robotic greens mower. The RTK-GPS correction data is processed by the cloud service and provided to the robotics greens mower via the data communications network.
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