Automatic turn-sensing ground speed reduction systems and related methods for walk-behind machines
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01D-034/64
B60Q-001/26
B60W-030/18
A01D-034/00
A01D-034/69
A01D-101/00
출원번호
US-0515234
(2014-10-15)
등록번호
US-9616893
(2017-04-11)
발명자
/ 주소
Bejcek, Andrew E.
출원인 / 주소
Honda Motor Co., Ltd.
대리인 / 주소
Jenkins, Wilson, Taylor & Hunt, P.A.
인용정보
피인용 횟수 :
1인용 특허 :
19
초록▼
Automatic turn-sensing ground speed reduction systems and related methods for walk-behind, self-propelled machines are disclosed. In one aspect, automatic turn-sensing ground speed reduction systems and related methods can include a control unit and a sensor. The sensor can be configured to transmit
Automatic turn-sensing ground speed reduction systems and related methods for walk-behind, self-propelled machines are disclosed. In one aspect, automatic turn-sensing ground speed reduction systems and related methods can include a control unit and a sensor. The sensor can be configured to transmit a signal to the control unit. In some aspects, the sensor can include a gyroscope that can be configured to transmit the signal to the control unit, the signal corresponding to an angular velocity of the walk-behind machine measured about a vertical axis perpendicular to a ground surface on which the walk-behind machine can be self-propelled. The control unit can be configured to automatically adjust a ground speed of the walk-behind machine during turning movement of the walk-behind machine based upon the signal.
대표청구항▼
1. An automatic turn-sensing ground speed reduction system for a walk-behind, self-propelled machine having a main operative assembly and a handle that extends behind the main operative assembly, the system comprising: an actuation mechanism disposed at a distal end portion of the handle and located
1. An automatic turn-sensing ground speed reduction system for a walk-behind, self-propelled machine having a main operative assembly and a handle that extends behind the main operative assembly, the system comprising: an actuation mechanism disposed at a distal end portion of the handle and located at a rear of the walk-behind, self-propelled machine, the actuation mechanism being configured for use by an operator to assign a ground speed of the walk-behind, self-propelled machine;a control unit; anda sensor configured to transmit a signal to the control unit, wherein the signal corresponds to an angular velocity of the walk-behind, self-propelled machine measured about a vertical axis perpendicular to a ground surface on which the walk-behind, self-propelled machine can be self-propelled;wherein the actuation mechanism is configured to allow one handed control of the walk-behind, self-propelled machine by the operator, andwherein the control unit is configured to automatically adjust the ground speed of the walk-behind, self-propelled machine during turning movement of the walk-behind, self-propelled machine based upon whether the signal exceeds a predetermined threshold value of one or more of velocity, angular velocity, acceleration, angular acceleration, orientation, and/or gravitational forces experienced by the walk-behind, self-propelled machine. 2. The system of claim 1, wherein the actuation mechanism is configured to transmit a control signal to the control unit, the control signal corresponding to the ground speed. 3. The system of claim 1, wherein the control unit is configured to apply a drive control multiplier to scale the ground speed of the walk-behind, self-propelled machine. 4. The system of claim 1, wherein the control unit is configured to shut off a drive system of the walk-behind, self-propelled machine during turning movement of the walk-behind, self-propelled machine, and the control unit is configured to turn on the drive system when one of a following set of criteria are met: an angular deceleration of the walk-behind, self-propelled machine is greater than a predetermined angular deceleration threshold, an angular velocity of the walk-behind, self-propelled machine is less than a predetermined angular velocity threshold, and the drive system is off for more than a predetermined timeout threshold. 5. The system of claim 1, wherein the control unit is configured to apply a first order recursive filter to the signal. 6. The system of claim 5, wherein the control unit is configured to calculate an angular acceleration of the walk-behind, self-propelled machine based on the filtered signal. 7. The system of claim 1, wherein the sensor is mounted on a printed circuit board on the walk-behind, self-propelled machine. 8. The system of claim 1, wherein the sensor comprises a gyroscope configured to transmit the signal to the control unit. 9. A walk-behind, self-propelled machine comprising an automatic turn-sensing ground speed reduction system, the walk-behind, self-propelled machine comprising: a main operative assembly;a handle that extends behind the main operative assembly of the walk-behind, self-propelled machine;an actuation mechanism disposed at a distal end portion of the handle, so as to be located at a rear of the walk-behind, self-propelled machine, the actuation mechanism being configured for use by an operator to assign a ground speed of the walk-behind, self-propelled machine;a control unit;a sensor configured to transmit a signal to the control unit, wherein the signal corresponds to an angular velocity of the walk-behind, self-propelled machine measured about a vertical axis perpendicular to a ground surface on which the walk-behind, self-propelled machine can be self-propelled; anda drive system configured to propel the walk-behind, self-propelled machine along the ground surface at the ground speed;wherein the actuation mechanism is configured to allow one handed control of the walk-behind, self-propelled machine by the operator, andwherein the control unit is configured to automatically adjust the ground speed of the walk-behind, self-propelled machine during turning movement of the walk-behind, self-propelled machine based upon whether the signal exceeds a predetermined threshold value of one or more of velocity, angular velocity, acceleration, angular acceleration, orientation, and/or gravitational forces experienced by the walk-behind, self-propelled machine. 10. The walk-behind, self-propelled machine of claim 9, wherein the actuation mechanism is configured to transmit a control signal to the control unit, the control signal corresponding to the ground speed. 11. The walk-behind, self-propelled machine of claim 9, wherein the control unit is configured to apply a drive control multiplier to scale the ground speed of the walk-behind, self-propelled machine. 12. The walk-behind, self-propelled machine of claim 9, wherein the control unit is configured to shut off the drive system during turning movement of the walk-behind, self-propelled machine, and is configured to turn on the drive system when one of a following set of criteria are met: an angular deceleration of the walk-behind, self-propelled machine is greater than a predetermined angular deceleration threshold, an angular velocity of the walk-behind, self-propelled machine is less than a predetermined angular velocity threshold, and the drive system is off for more than a predetermined timeout threshold. 13. The walk-behind, self-propelled machine of claim 9, wherein the control unit is configured to apply a first order recursive filter to the signal. 14. The walk-behind, self-propelled machine of claim 13, wherein the control unit is configured to calculate an angular acceleration of the walk-behind, self-propelled machine based on the filtered signal. 15. A method for implementing automatic turn-sensing ground speed reduction in a walk-behind, self-propelled machine, the method comprising: assigning, by an operator using an actuation mechanism disposed at a distal end portion of the handle so as to be located at a rear of the walk-behind, a ground speed of the walk-behind, self-propelled machine;transmitting a signal to a control unit;interpreting the signal in the control unit, wherein the signal corresponds to an angular velocity of the walk-behind, self-propelled machine measured about a vertical axis perpendicular to a ground surface on which the walk-behind, self-propelled machine can be self-propelled; andautomatically adjusting the ground speed of the walk-behind, self-propelled machine in the control unit during turning movement of the walk-behind, self-propelled machine based upon whether the signal exceeds a predetermined threshold value of one or more of velocity, angular velocity, acceleration, angular acceleration, orientation, and/or gravitational forces experienced by the walk-behind, self-propelled machine,wherein the actuation mechanism is configured to allow one handed control of the walk-behind, self-propelled machine by the operator. 16. The method of claim 15, further comprising transmitting a control signal to the control unit, the control signal corresponding to the ground speed of the walk-behind, self-propelled machine. 17. The method of claim 15, further comprising applying a drive control multiplier to scale the ground speed of the walk-behind, self-propelled machine. 18. The method of claim 15, wherein automatically adjusting the ground speed of the walk-behind, self-propelled machine further comprises shutting off a drive system of the walk-behind, self-propelled machine during turning movement, and turning on the drive system when one of a following set of criteria are met: an angular deceleration of the walk-behind, self-propelled machine is greater than a predetermined angular deceleration threshold, an angular velocity of the walk-behind, self-propelled machine is less than a predetermined angular velocity threshold, and the drive system is off for more than a predetermined timeout threshold. 19. The method of claim 15, further comprising applying a first order recursive filter to the signal. 20. The method of claim 19, further comprising calculating an angular acceleration of the walk-behind, self-propelled machine in the control unit based on the filtered signal.
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이 특허에 인용된 특허 (19)
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