System and method for propulsion system control
First Claim
1. A vehicle comprising:
- a first propulsion system that includes a first torque generator, a first transmission in communication with the first torque generator, and a first drive member in communication with the first transmission;
a second propulsion system that includes a second torque generator, a second transmission in communication with the second torque generator, and a second drive member in communication with the second transmission;
a first speed sensor that measures a speed of the first drive member; and
a controller programmed to;
estimate a speed of the first drive member using at least one linear equation that models the first propulsion system with coefficients corresponding to a first rotational inertia and a first translational inertia and a first coupling between the first propulsion system and the second propulsion system;
compare the estimated speed of the first drive member to the measured speed of the first drive member;
determining an estimated speed error signal based upon the comparison; and
control the torque generated by the first propulsion system based upon the estimated speed error signal.
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Accused Products
Abstract
A method and system for controlling a vehicle that includes a first propulsion system with a first torque generator and coupled to a first drive member, a second propulsion system with a second torque generator and coupled to a second drive member. The method includes measuring a speed of the first drive member, estimating a speed of the first drive member using a model of the first propulsion system that includes a modeled first rotational inertia and a modeled first translational inertia that are rigidly connected to each other and a model of a first coupling between the modeled first propulsion system and a model of the second propulsion system, and comparing the measured speed of the first drive member to the estimated speed of the first drive member.
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Citations
18 Claims
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1. A vehicle comprising:
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a first propulsion system that includes a first torque generator, a first transmission in communication with the first torque generator, and a first drive member in communication with the first transmission; a second propulsion system that includes a second torque generator, a second transmission in communication with the second torque generator, and a second drive member in communication with the second transmission; a first speed sensor that measures a speed of the first drive member; and a controller programmed to; estimate a speed of the first drive member using at least one linear equation that models the first propulsion system with coefficients corresponding to a first rotational inertia and a first translational inertia and a first coupling between the first propulsion system and the second propulsion system; compare the estimated speed of the first drive member to the measured speed of the first drive member; determining an estimated speed error signal based upon the comparison; and control the torque generated by the first propulsion system based upon the estimated speed error signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling a vehicle that includes a first propulsion system with a first torque generator and coupled to a first drive member, a second propulsion system with a second torque generator and coupled to a second drive member, the method comprising:
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measuring a speed of the first drive member; estimating a speed of the first drive member using at least one linear equation that models the first propulsion system with coefficients corresponding to a first rotational inertia and a first translational inertia and a first coupling between the first propulsion system and the second propulsion system; comparing the measured speed of the first drive member to the estimated speed of the first drive member; determining an estimated speed error signal based upon the comparison; and controlling the torque generated by the first propulsion system based upon the estimated speed error signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification