Route-based distance to empty calculation for a vehicle
First Claim
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1. A vehicle comprising:
- at least one power source;
a plurality of wheels;
a motor configured to drive at least one of the plurality of wheels with energy stored in the power source; and
at least one processor configured to;
break a received route into a plurality of segments; and
calculate a route energy consumption rate correction factor (RECF) of a current segment with the following discrete first order filter equation;
Rroute_corr(k)=[1−
x]*Rroute_corr(k−
1)+x*[R(k)−
F(k)]wherein Rroute_corr is the calculated RECF, k is a discrete time index, x is a filter constant, R(k) is an observed energy consumption rate, and F(k) is an estimated energy consumption rate of the current segment.
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Abstract
A vehicle may include: at least one power source; a plurality of wheels; a motor configured to drive at least one of the plurality of wheels with energy stored in the power source; and at least one processor configured to: break a received route into a plurality of segments; and calculate a route energy consumption rate correction factor (RECF) of a current segment as a function of the following received values: a RECF of a previous segment, an observed energy consumption rate, and an estimated energy consumption rate.
34 Citations
17 Claims
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1. A vehicle comprising:
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at least one power source; a plurality of wheels; a motor configured to drive at least one of the plurality of wheels with energy stored in the power source; and at least one processor configured to; break a received route into a plurality of segments; and calculate a route energy consumption rate correction factor (RECF) of a current segment with the following discrete first order filter equation;
Rroute_corr(k)=[1−
x]*Rroute_corr(k−
1)+x*[R(k)−
F(k)]wherein Rroute_corr is the calculated RECF, k is a discrete time index, x is a filter constant, R(k) is an observed energy consumption rate, and F(k) is an estimated energy consumption rate of the current segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vehicle comprising:
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at least one power source; a plurality of wheels; a motor configured to drive at least one of the plurality of wheels with energy stored in the at least one power source; and at least one processor configured to; break a received route into a plurality of segments; calculate an estimated distance to empty, the estimated distance to empty being a value reflecting a distance until the at least one power source is exhausted, the at least one processor being configured to calculate the estimated distance to empty based on a route energy consumption rate correction factor (RECF) of a current segment, wherein the RECF of the current segment is calculated with the following discrete first order filter equation;
Rroute_corr(k)=[1−
x]*Rroute_corr(k−
1)+x*[R(k)−
F(k)]wherein Rroute_corr is the calculated RECF, k is a discrete time index, x is a filter constant, R(k) is an observed energy consumption rate, and F(k) is an estimated energy consumption rate of the current segment; and cause a display of the estimated distance to empty. - View Dependent Claims (15, 16)
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17. A vehicle comprising:
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at least one power source; a plurality of wheels; a motor configured to drive at least one of the plurality of wheels with energy stored in the at least one power source; and at least one processor configured to; break a received route into a plurality of segments; calculate a route energy consumption rate correction factor (RECF) of a current segment with the following discrete first order filter equation;
Rroute_corr(k)=[1−
x]*Rroute_corr(k−
1)+x*[R(k)−
F(k)]wherein Rroute_corr is the calculated RECF, k is a discrete time index, x is a filter constant, R(k) is an observed energy consumption rate, and F(k) is an estimated energy consumption rate of the current segment; calculate an estimated distance to empty, the estimated distance to empty being a value reflecting a distance until the at least one power source is exhausted, the at least one processor being configured to calculate the estimated distance to empty based on the observed energy consumption rate of a previous segment, the estimated energy consumption rate of the previous segment, the observed energy consumption rate of the current segment, and the energy consumption estimate of the current segment; cause a display of the estimated distance to empty.
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Specification