METHOD AND APPARATUS FOR DEVELOPING A CONTROL ARCHITECTURE FOR COORDINATING SHIFT EXECUTION AND ENGINE TORQUE CONTROL
First Claim
1. Method for controlling a powertrain system including a transmission mechanically coupled to an engine and an electric machine to transfer power to an output member, said transmission selectively operative in one of a plurality of operating range states, said method comprising:
- monitoring operator inputs to an accelerator pedal;
determining a preferred operating point of said powertrain based upon said operator inputs;
determining a preferred operating range state of said transmission based upon said preferred operating point;
determining lead control signals for said engine and said transmission based upon said preferred operating point and said preferred operating range state of said transmission;
determining immediate control signals for said electric machine and said transmission, wherein said immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of said engine and said electric machine in order to effect changes to an actual electric machine output substantially simultaneously with changes to an actual engine output;
controlling operation of said engine based upon said lead control signals for said engine and said transmission; and
controlling operation of said electric machine based upon said immediate control signals for said electric machine and said transmission.
19 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling a powertrain system including a transmission mechanically coupled to an engine and an electric machine to transfer power to an output member, the transmission selectively operative in one of a plurality of operating range states includes monitoring operator inputs to an accelerator pedal, determining a preferred operating point of the powertrain based upon the operator inputs, determining a preferred operating range state of the transmission based upon the preferred operating point, determining lead control signals for the engine and the transmission based upon the preferred operating point and the preferred operating range state of the transmission, determining immediate control signals for the electric machine and the transmission, wherein the immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of the engine and the electric machine in order to effect changes to an actual electric machine output substantially simultaneously with changes to an actual engine output, controlling operation of the engine based upon the lead control signals for the engine and the transmission, and controlling operation of the electric machine based upon the immediate control signals for the electric machine and the transmission.
245 Citations
26 Claims
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1. Method for controlling a powertrain system including a transmission mechanically coupled to an engine and an electric machine to transfer power to an output member, said transmission selectively operative in one of a plurality of operating range states, said method comprising:
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monitoring operator inputs to an accelerator pedal; determining a preferred operating point of said powertrain based upon said operator inputs; determining a preferred operating range state of said transmission based upon said preferred operating point; determining lead control signals for said engine and said transmission based upon said preferred operating point and said preferred operating range state of said transmission; determining immediate control signals for said electric machine and said transmission, wherein said immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of said engine and said electric machine in order to effect changes to an actual electric machine output substantially simultaneously with changes to an actual engine output; controlling operation of said engine based upon said lead control signals for said engine and said transmission; and controlling operation of said electric machine based upon said immediate control signals for said electric machine and said transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Method for controlling a powertrain system including a transmission mechanically coupled to an engine and two electric machines to transfer power to an output member, said transmission selectively operative in one of a plurality of operating range states, said method comprising:
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monitoring operator inputs describing an operator torque request; determining a preferred operating point of said powertrain based upon said operator inputs; determining a preferred operating range state of said transmission based upon said preferred operating point; determining lead control signals for said engine and said transmission based upon said preferred operating point and said preferred operating range state of said transmission; determining immediate control signals for said electric machines and said transmission, wherein said immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of said engine and said electric machines in order to effect changes to actual electric machine outputs substantially simultaneously with changes to an actual engine output; and controlling operation of said powertrain based upon said lead control signals for said engine and said transmission and said immediate control signals for said electric machines and said transmission. - View Dependent Claims (20, 21, 22)
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23. Apparatus for controlling a powertrain system including a transmission mechanically coupled to an engine and an electric machine to transfer power to an output member, said transmission selectively operative in one of a plurality of operating range states, said apparatus comprising:
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a strategic control module including logic to determine a preferred operating point of said powertrain and a preferred operating range state of said transmission based upon an operator input; a shift execution module including logic generating lead control signals for said engine and said transmission and immediate control signals for said electric machine and said transmission, wherein said control signals are based upon said preferred operating point of said powertrain and said preferred operating range state of said transmission, and wherein said immediate control signals are based upon a lead period calibrated to a difference in control signal reaction times of said engine and said electric machine in order to effect changes to an actual electric machine output substantially simultaneously with changes to an actual engine output; an engine control module controlling said engine based upon said lead control signals for said engine and said transmission; and an electric machine module controlling said electric machine based upon said immediate control signals for said electric machine and said transmission. - View Dependent Claims (24, 25, 26)
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Specification