APPARATUS FOR COMPENSATING FOR TORQUE OF FUEL CELL ELECTRIC VEHICLE AND METHOD THEREOF
First Claim
1. An apparatus for compensating for torque of a fuel cell electric vehicle, the apparatus comprising:
- a storage configured to store a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded;
a degradation rate calculator configured to calculate a degradation rate (α
) based on a maximum voltage (VP) and an output voltage (VO) of the fuel cell stack;
a correction coefficient searcher configured to search for a correction coefficient (β
) corresponding to the calculated degradation rate using the first look-up table;
a pedal amount detector configured to detect a pedal amount (Pb) indicating a degree to which an acceleration pedal is pressed; and
a torque compensator configured to compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table.
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Accused Products
Abstract
An apparatus for compensating for torque of a fuel cell electric vehicle includes: a storage configured to store a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded; a degradation rate calculator configured to calculate a degradation rate based on a maximum voltage and an output voltage of the fuel cell stack; a correction coefficient searcher configured to search for a correction coefficient corresponding to the calculated degradation rate using the first look-up table; a pedal amount detector configured to detect a pedal amount indicating a degree to which an acceleration pedal is pressed; and a torque compensator configured to compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table.
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Citations
11 Claims
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1. An apparatus for compensating for torque of a fuel cell electric vehicle, the apparatus comprising:
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a storage configured to store a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded; a degradation rate calculator configured to calculate a degradation rate (α
) based on a maximum voltage (VP) and an output voltage (VO) of the fuel cell stack;a correction coefficient searcher configured to search for a correction coefficient (β
) corresponding to the calculated degradation rate using the first look-up table;a pedal amount detector configured to detect a pedal amount (Pb) indicating a degree to which an acceleration pedal is pressed; and a torque compensator configured to compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table. - View Dependent Claims (2, 3, 4, 5)
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6. A method for compensating for torque of a fuel cell electric vehicle, the method comprising:
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storing, in a storage, a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded; calculating, by a degradation rate calculator, a degradation rate (α
) based on a maximum voltage (VP) and an output voltage (VO) of the fuel cell stack;searching, by a correction coefficient searcher, for a correction coefficient (β
) corresponding to the calculated degradation rate using the first look-up table;detecting, by a pedal amount detector, a pedal amount (Pb) indicating a degree to which an acceleration pedal is pressed; and compensating, by a torque compensator, for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer readable medium containing program instructions for compensating for torque of a fuel cell electric vehicle, the computer readable medium comprising:
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program instructions that calculate a degradation rate (α
) using a maximum voltage (VP) and an output voltage (VO) of a fuel cell stack;program instructions that search for a correction coefficient (β
) corresponding to the calculated degradation rate using a stored first look-up table, in which pedal amount correction coefficients corresponding to degradation rates of the fuel cell stack are recorded;program instructions that detect a pedal amount (Pb) indicating a degree to which an acceleration pedal is pressed; and program instructions that compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using a stored second look-up table, in which torques corresponding to pedal amounts are recorded.
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Specification