ACCELERATION CONTROL FOR VEHICLES HAVING A LOADER ARM
First Claim
1. A vehicle having a loader arm capable of carrying a load and having a stability polygon comprising:
- a device for sensing the weight of the load and generating a signal indicative thereof;
a device for sensing the height of the load and generating a signal indicative thereof;
an electronic controller coupled to the device for sensing the weight and height of the load, and programmed to dynamically calculate the static center of gravity of the combined vehicle and load based upon the signals received from the device for sensing the weight and height of the load, to calculate the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle, and to generate a signal to limit the acceleration of the vehicle to less than the dynamically calculated acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle.
1 Assignment
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Accused Products
Abstract
A control system for a vehicle having a loader arm, such as a skid steer loader, telescopic handler, wheel loader, backhoe loader or forklift, reads a load height sensor, a load weight sensor; dynamically calculates the static center of gravity of the combined vehicle and load; calculates the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the vehicle'"'"'s stability polygon; and limits the acceleration of the vehicle to less than the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the vehicle'"'"'s stability polygon.
54 Citations
20 Claims
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1. A vehicle having a loader arm capable of carrying a load and having a stability polygon comprising:
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a device for sensing the weight of the load and generating a signal indicative thereof; a device for sensing the height of the load and generating a signal indicative thereof; an electronic controller coupled to the device for sensing the weight and height of the load, and programmed to dynamically calculate the static center of gravity of the combined vehicle and load based upon the signals received from the device for sensing the weight and height of the load, to calculate the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle, and to generate a signal to limit the acceleration of the vehicle to less than the dynamically calculated acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a vehicle having a loader arm capable of carrying a load and having a stability polygon comprising:
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receiving a signal representative of the weight of the load; receiving a signal representative of the height of the load; combining the signals representative of weight and height of the load to dynamically calculate the static center of gravity of the combined vehicle and load; dynamically calculating the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle; and generating a signal to limit the acceleration of the vehicle to less than the dynamically calculated acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A drive control system for a vehicle having a loader arm capable of carrying a load and having a stability polygon, the drive control system comprising:
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a device for sensing the weight of the load and generating a signal indicative thereof; a device for sensing the height of the load and generating a signal indicative thereof; an electronic controller for receiving the signals generated by the device for sensing the weight and height of the load, and programmed to dynamically calculate the static center of gravity of the combined vehicle and load based upon the signals received from the device for sensing the weight and height of the load, to calculate the acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle, and to generate a signal to limit the acceleration of the vehicle to less than the dynamically calculated acceleration necessary to cause the dynamic center of gravity of the combined vehicle and load to extend exterior of the stability polygon for the vehicle. - View Dependent Claims (18, 19, 20)
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Specification