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US 12,655,004 B2Granted
System and method for controlling a maximum vehicle speed for an industrial vehicle based on a calculated load
AssigneeCrown Equipment Corporation
InventorsJoe K. Hammer, Mark E. Addison
Life of this patent
Estimating the term…
Abstract
Controlling a maximum vehicle speed for an industrial vehicle includes determining, by a processor of the industrial vehicle, a torque applied to the traction wheel of the industrial vehicle; converting the torque to an equivalent force value; and determining an acceleration of the industrial vehicle while the torque is applied to the traction wheel. Additional steps include calculating a load being moved by the industrial vehicle, based at least in part on the acceleration and the equivalent force value; and controlling the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle.
Claims30
A method for controlling a maximum vehicle speed for an industrial vehicle, comprising:
- determining, by a processor of the industrial vehicle, a torque applied to a traction wheel of the industrial vehicle;
- determining, by the processor of the industrial vehicle, an acceleration of the industrial vehicle while the torque is applied to the traction wheel;
- based at least in part on the acceleration and the torque applied to the traction wheel, calculating, by the processor of the industrial vehicle, a load being moved by the industrial vehicle, wherein calculating the load comprises:
- calculating a set comprising at least a minimum number of individual load values of the load being moved by the industrial vehicle in response to the industrial vehicle accelerating above a first predefined value;
- averaging the at least a minimum number of individual load values to determine a respective set load value for the set;
- collecting, by the processor of the industrial vehicle, a plurality of the set load values of the load being moved by the vehicle, each subsequent set load value being calculated after the industrial vehicle is detected to accelerate below the first predefined value and then accelerating above the first predefined value;
- and
- averaging the respective values of the plurality of set load values to determine the calculated load;
- and
- controlling, by the processor of the industrial vehicle, the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle.
7 more elements
A system for controlling a maximum vehicle speed for an industrial vehicle, comprising:
- a memory device storing executable instructions;
- and
- a processor in communication with the memory device, wherein the processor, when executing the executable instructions:
- determines a torque applied to a traction wheel of the industrial vehicle;
- determines an acceleration of the industrial vehicle while the torque is applied to the traction wheel;
- calculates a load being moved by the industrial vehicle based at least in part on the acceleration and the torque applied to the traction wheel, wherein calculating the load comprises:
- calculating a set comprising at least a minimum number of individual values of the load being moved by the industrial vehicle in response to the industrial vehicle accelerating above a first predefined value;
- averaging the at least a minimum number of individual values to determine a respective set load value for the set;
- in response to the acceleration of the industrial vehicle falling below the first predefined value and then accelerating above the first predefined value, collecting a further set load value of the load being moved by the industrial vehicle;
- averaging the respective values of the plurality of set load values to calculate the load;
- and
- controlling a maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle.
9 more elements
A method for controlling a maximum vehicle speed for an industrial vehicle, comprising:
- determining, by a processor of the industrial vehicle, a torque applied to a traction wheel of the industrial vehicle;
- determining, by the processor of the industrial vehicle, an acceleration of the industrial vehicle while the torque is applied to the traction wheel;
- based at least in part on the acceleration and the torque applied to the traction wheel, calculating, by the processor of the industrial vehicle, a load being moved by the industrial vehicle;
- and
- controlling, by the processor of the industrial vehicle, the maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle,
- wherein calculating the load comprises:
- calculating a set comprising a predetermined number of individual load values of the load being moved by the industrial vehicle in response to the industrial vehicle accelerating above a first predefined value and traveling at least a predetermined distance;
- and
- averaging the predetermined number of individual values to determine a respective set load value for the set;
- detecting, by the processor of the industrial vehicle, a first operating condition that comprises:
- a) an acceleration of the industrial vehicle is less than the first predefined value, and
- b) a speed of the industrial vehicle is less than a second predefined value;
- subsequent to the first operating condition, determining, by the processor of the industrial vehicle, a second operating condition comprising the industrial vehicle, within a predefined time period after the first operating condition:
- a) begins accelerating again above the first predefined value, and
- b) has traveled the predetermined distance;
- in response to occurrence of the first operating condition and occurrence of the second operating condition within the predefined time period after the first operating condition, collecting, by the processor of the industrial vehicle, a further set load value of the load being moved by the industrial vehicle;
- and
- averaging the respective values of the plurality of set load values to calculate the calculated load.
15 more elements
A system for controlling a maximum vehicle speed for an industrial vehicle, comprising:
- a memory device storing executable instructions;
- and
- a processor in communication with the memory device, wherein the processor, when executing the executable instructions:
- determines a torque applied to a traction wheel of the industrial vehicle;
- determines an acceleration of the industrial vehicle while the torque is applied to the traction wheel;
- calculates a load being moved by the industrial vehicle based at least in part on the acceleration and the torque applied to the traction wheel;
- and
- controls a maximum speed of the industrial vehicle based on the calculated load being moved by the industrial vehicle;
- wherein the processor, when executing the executable instructions to calculate the load, further:
- calculates a set comprising a predetermined number of individual values of the load being moved by the industrial vehicle in response to the industrial vehicle accelerating above a first predefined value and traveling at least a predetermined distance;
- and
- averages the predetermined number of individual values to determine a respective set load value for the set;
- detects a first operating condition that comprises:
- a) an acceleration of the industrial vehicle is less than the first predefined value, and
- b) a speed of the industrial vehicle is less than a second predefined value;
- subsequent to the first operating condition, determines a second operating condition comprising the industrial vehicle, within a predefined time period after the first operating condition:
- a) begins accelerating again above the first predefined value, and
- b) has traveled the predetermined distance;
- in response to occurrence of the first operating condition and occurrence of the second operating condition within the predefined time period after the first operating condition, collects a further set load value of the load being moved by the industrial vehicle;
- and
- averages the respective values of the plurality of set load values to calculate the calculated load.
18 more elements
Dependencies are inferred from the claim text.