Hybrid electric vehicle control system and method of use
First Claim
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1. A control system for a hybrid electric vehicle (HEV) comprising:
- a fuzzy gain-scheduling proportional integral (PI) controller that operates to control an engine power, engine speed, and vehicle powertrain in response to predefined operating conditions, said fuzzy gain-scheduling proportional integral (PI) controller comprising a fuzzy logic gain-scheduler having an associated output in communication with a PI controller, said output comprising an input to said PI controller, said input modified within said PI controller to produce a gain output from said (PI) controller, said gain output comprising an output of said fuzzy gain-scheduling proportional integral (PI) controller.
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Abstract
A rule-based fuzzy gain-scheduling proportional integral (PI) controller is provided to control desired engine power and speed behavior in a power-split HEV. The controller includes a fuzzy logic gain-scheduler and a modified PI controller that operates to improve on the control of engine power and speed in a power-split HEV versus using conventional PI control methods. The controller improves the engine power and speed behavior of a power-split HEV by eliminating overshoots, and by providing enhanced and uncompromised rise-time and settling-time.
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Citations
20 Claims
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1. A control system for a hybrid electric vehicle (HEV) comprising:
a fuzzy gain-scheduling proportional integral (PI) controller that operates to control an engine power, engine speed, and vehicle powertrain in response to predefined operating conditions, said fuzzy gain-scheduling proportional integral (PI) controller comprising a fuzzy logic gain-scheduler having an associated output in communication with a PI controller, said output comprising an input to said PI controller, said input modified within said PI controller to produce a gain output from said (PI) controller, said gain output comprising an output of said fuzzy gain-scheduling proportional integral (PI) controller. - 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. A control method for controlling a hybrid electric vehicle comprising:
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providing a fuzzy gain-scheduling proportional integral (PI) controller that operates to control an engine power, engine speed, and vehicle powertrain in response to predefined operating conditions, said fuzzy gain-scheduling proportional integral (PI) controller comprising a fuzzy logic gain-scheduler having an associated output in communication with a PI controller, said output comprising an input to said PI controller, said input modified within said PI controller to produce a gain output from said (PI) controller, said gain output comprising an output of said fuzzy gain-scheduling proportional integral (PI) controller; using said fuzzy gain-scheduling proportional integral controller to control said engine power, engine speed, and vehicle powertrain. - View Dependent Claims (20)
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Specification