Adaptation method for controlling shifting elements
AssigneeZF Friedrichshafen AG
InventorsWolfgang Kösling, Klaus Steinhauser
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Abstract
A system and method for correcting a control of relevant parameters of operation of an automatic transmission having shift elements of a hydraulically-shifted automotive automatic transmission. The influences of an alteration of the internal adaptation parameters on stored external adaptation parameters are taken into account, thus creating a quick-acting and robust adaptation system. The control algorithm is sensitive to a level of the stored external adaptation parameters, to compensate for internal parameter interactivity without requiring comprehensive evaluation of the interaction under all circumstances.
Claims33
A method for adapting parameters of an electronic transmission control for controlling an automatic transmission, wherein a set of external adaptation parameters are stored in a memory, comprising evaluating the value of a stored external adaptation parameter with respect to an evaluation level to determine a weighting to be applied to a calculation involving an internal adaptation parameter, calculating a modified set of external adaptation parameters in dependence thereon, and producing an output for controlling an automatic transmission in dependence on an algorithm together employing the modified set of external adaptation parameters, said modified set of parameters comprising at least two parameters.
An control for adaptively controlling parameters of an automatic transmission, comprising a memory for storing values of a set of external adaptation parameters, a processor for evaluating the value of the set of external adaptation parameters with respect to an evaluation level to determine, a weighting to be applied to a calculation involving at least one internal adaptation parameter, for determining a modified set of external adaptation parameters, and an output, for controlling the automatic transmission in dependence on the modified set of external adaptation parameters.
An adaptive control for an automatic transmission, comprising:
- a memory storing a set of external adaptation parameters;
- a processor for producing an output for controlling the automatic transmission, said output being produced based on an algorithm in dependence on a multivariate analysis involving the stored external adaptation parameters, weightings derived from a respective level of a stored external adaptation parameter, and an internal adaptation parameter.
A method for adapting parameters of an electronic transmission control for controlling an automatic transmission, wherein a set of external adaptation parameters are stored in a memory, comprising evaluating the value of a stored external adaptation parameter with respect to an evaluation level to determine a weighting to be applied to a calculation involving an internal adaptation parameter, calculating a modified set of external adaptation parameters in dependence thereon, and producing an output for controlling an automatic transmission in dependence on the modified set of external adaptation parameters, said modified set of parameters comprising at least two parameters, wherein said weighting comprises a decision to include or exclude a term in a calculation.
A control for adaptively controlling parameters of operation for an automatic transmission, comprising a memory for storing values of a set of external adaptation parameters, a processor for evaluating the value of the set of external adaptation parameters with respect to an evaluation level to determine a weighting to be applied to a calculation involving at least one internal adaptation parameter, for determining a modified set of external adaptation parameters, and an output, for controlling the automatic transmission in dependence on a plurality of parameters from the modified set of external adaptation parameters, wherein said weighting comprises a decision to include or exclude a term in a calculation.
An adaptive control for an automatic transmission, comprising:
- a memory storing a set of external adaptation parameters;
- a processor for producing an output for controlling the automatic transmission, said output being produced based on an algorithm in dependence on a multivariate analysis involving the stored external adaptation parameters, weightings derived from a respective level of a stored external adaptation parameter, and an internal adaptation parameter, wherein said processor makes a decision to include or exclude a term in a calculation.
Dependencies are inferred from the claim text.