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1.发明授权公开(公告)号：US11771615B2
公开(公告)日：2023-10-03
申请号：US17964012
申请日：2022-10-11
IPC分类号： A61H3/04
CPC分类号： A61H3/04 , A61H2003/043
摘要： The present disclosure discloses a method, a device of steering assist control for a walker, and a memory. The method includes acquiring a first moving speed of the left wheel and a second moving speed of the right wheel; determining whether the left wheel and/or the right wheel is in a steering state; calculating a steering angle estimate or a speed difference between the first moving speed and the second moving speed when in the steering state; acquiring steering assist compensations; and performing an assist compensation on the left wheel and/or the right wheel. The method can make the user more effortless when pushing the walker to turn, making it more convenient for users with less strength to use the walker, and reducing impact of the steering on the travel speed. Sudden stop caused by the increase of steering resistance can be avoided, and safety can be improved.
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公开(公告)号：US11793706B2
公开(公告)日：2023-10-24
申请号：US18086448
申请日：2022-12-21
发明人： Mao Gong , Jianfeng Lu
CPC分类号： A61H3/04 , A61G5/04 , A61G2203/44 , A61H2003/002 , A61H2003/043 , A61H2201/5061
摘要： An intelligent rollator has a vehicle body, a seat provided in the vehicle body for a person to sit or place items on, and front and rear wheels provided at the bottom of the wheels, driven by motors. A power-assist control method includes the following steps: obtaining the load weight of the vehicle body; and entering a first power-assist compensation mode to compensate the torque output of the motor according to a first power-assist compensation threshold, when the load weight is greater than a set threshold. The first power-assist compensation threshold is direct proportional to at least one of the following parameters: the load weight of the intelligent rollator, and the moving speed of the intelligent rollator.
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3.发明授权公开(公告)号：US11793705B2
公开(公告)日：2023-10-24
申请号：US18016160
申请日：2021-08-20
CPC分类号： A61H3/04 , B60T7/12 , B60T8/1701 , B60T8/171 , A61H2003/043 , A61H2003/046 , A61H2201/018 , A61H2201/1207 , A61H2201/5007 , A61H2201/5046 , A61H2201/5064 , A61H2201/5084
摘要： Disclosed is a fall-resistant control method for an intelligent rollator, an intelligent rollator and a controller. The intelligent rollator has a vehicle body, front wheels and/or rear wheels configured at the bottom of the vehicle body and driven by a motor. The fall-resistant control method includes: recording the current position of the motor as the initial position when the moving speed of the intelligent rollator exceeds a first threshold and the acceleration of the intelligent rollator exceeds a second threshold; determining a first braking torque according to the position change of the motor relative to the initial position, wherein the greater the position change, the greater the first braking torque; determining a second braking torque according to the moving speed and/or acceleration of the intelligent rollator, wherein the greater the moving speed and/or the acceleration, the greater the second braking torque; determining the fall-resistant braking torque according to the first braking torque and the second braking torque.
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