Method and apparatus for securing output torque in a distributed control module system for a powertrain system
First Claim
1. Method to monitor signal integrity in a control module for a hybrid powertrain system including a transmission and a plurality of torque generating machines connected to an energy storage device, the transmission operative to transfer power between an input member and the torque generating machines and an output member, wherein the control module performs the following steps comprising:
- determining an output torque command;
calculating motor torque commands for the torque generating machines based upon the output torque command;
determining torque corrections for the motor torque commands;
adjusting the motor torque commands based upon the torque corrections for the motor torque commands;
determining an input torque correction based upon the torque corrections for the motor torque commands;
determining an actual input torque to the input member;
estimating an output torque based upon the actual input torque, the input torque correction, and the adjusted motor torque commands; and
comparing the estimated output torque and the output torque command.
17 Assignments
0 Petitions
Accused Products
Abstract
A method to monitor integrity of a motor torque command for a transmission in a hybrid powertrain system includes calculating motor torque commands for the torque generating machines. Torque corrections for the motor torque commands are determined. The motor torque commands are adjusted based upon the torque corrections. The adjusted motor torque commands are verified based upon an estimated output torque.
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Citations
13 Claims
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1. Method to monitor signal integrity in a control module for a hybrid powertrain system including a transmission and a plurality of torque generating machines connected to an energy storage device, the transmission operative to transfer power between an input member and the torque generating machines and an output member, wherein the control module performs the following steps comprising:
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determining an output torque command; calculating motor torque commands for the torque generating machines based upon the output torque command; determining torque corrections for the motor torque commands; adjusting the motor torque commands based upon the torque corrections for the motor torque commands; determining an input torque correction based upon the torque corrections for the motor torque commands; determining an actual input torque to the input member; estimating an output torque based upon the actual input torque, the input torque correction, and the adjusted motor torque commands; and comparing the estimated output torque and the output torque command. - View Dependent Claims (2, 3, 4, 5)
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6. Method to monitor signal integrity in a control module for a hybrid powertrain system including a transmission and a plurality of torque generating machines connected to an energy storage device, the transmission operative to transfer power between an input member and the torque generating machines and an output member, wherein the control module performs the following steps comprising:
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determining an output torque command; calculating motor torque commands for the torque generating machines based upon the output torque command; determining torque corrections for the motor torque commands; adjusting the motor torque commands based upon the torque corrections for the motor torque commands; determining an input torque correction based upon the torque corrections for the motor torque commands; determining an actual input torque to the input member; estimating an output torque based upon the actual input torque, the input torque correction, and the adjusted motor torque commands; and comparing the estimated output torque and the output torque command; wherein the torque corrections for the motor torque commands comprise closed loop torque corrections based upon output speed; and wherein the torque corrections for the motor torque commands further comprise torque corrections for actively damping driveline pulsations.
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7. Method to monitor signal integrity in a control module for a hybrid powertrain system including a transmission and a plurality of torque generating machines connected to an energy storage device, the transmission operative to transfer power between an input member and the torque generating machines and an output member, wherein the control module performs the following steps comprising:
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determining an output torque command; calculating motor torque commands for the torque generating machines based upon the output torque command; determining torque corrections for the motor torque commands; adjusting the motor torque commands based upon the torque corrections for the motor torque commands; determining an input torque correction based upon the torque corrections for the motor torque commands; determining an actual input torque to the input member; estimating an output torque based upon the actual input torque, the input torque correction, and the adjusted motor torque commands; and comparing the estimated output torque and the output torque command; wherein the torque corrections for the motor torque commands comprise closed loop torque corrections based upon output speed; and wherein the torque corrections for the motor torque commands further comprise torque corrections for engine pulse cancellation.
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8. A method to monitor integrity of a signal in a distributed control module system operative to control an electro-mechanical transmission, the transmission operative to transfer power between an input member and a plurality of torque generating machines and an output member, wherein the distributed control module system performs the following steps comprising:
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calculating motor torque commands for the torque generating machines based upon an output torque command; determining torque corrections for the motor torque commands; adjusting the motor torque commands based upon the torque corrections for the motor torque commands; determining an input torque correction based upon the torque corrections for the motor torque commands; determining an actual input torque to the input member; estimating an output torque based upon the actual input torque, the input torque correction, and the adjusted motor torque commands; adjusting the estimated output torque based upon the input torque correction; and comparing the estimated output torque and the output torque command.
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9. A method to monitor integrity of a motor torque command in a distributed control module system operative to control an electro-mechanical transmission, the transmission operative to transfer power between an input member and a plurality of torque generating machines and an output member, wherein the distributed control module system performs the following steps comprising:
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calculating motor torque commands for the torque generating machines based upon an output torque command; determining torque corrections for the motor torque commands; adjusting the motor torque commands based upon the torque corrections for the motor torque commands; determining an input torque correction based upon the torque corrections for the motor torque commands; estimating an output torque based upon an actual input torque, the input torque correction, and the adjusted motor torque commands; and verifying the adjusted motor torque commands based upon the output torque command and the estimated output torque. - View Dependent Claims (10, 11)
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12. A method to monitor integrity of a motor torque command in a distributed control module system operative to control a powertrain system including an electro-mechanical transmission, the transmission operative to transfer power between an input member and a plurality of torque generating devices and an output member, wherein the distributed control module system performs the following steps comprising:
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determining an input torque; executing a first algorithm to determine motor torque commands for the torque generating devices based upon the input torque and an output torque command; determining torque corrections for the motor torque commands for the torque generating devices based upon autonomic operation of the powertrain system; determining adjusted motor commands for each of the torque generating devices based upon the torque corrections; determining an input torque correction based upon the torque corrections for the torque generating devices; executing a second algorithm to estimate an output torque based upon the input torque, the input torque correction and the adjusted commands for each of the torque generating devices; and comparing the output torque command and the estimated output torque. - View Dependent Claims (13)
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Specification