Adaptive control strategy and method for optimizing hybrid electric vehicles
First Claim
1. A hybrid electric vehicle including an electric motor, a battery and an internal combustion engine, the vehicle comprising:
- a power control module having an adaptive control unit for interfacing with sensors and actuators of the electric motor, the battery and the internal combustion engine;
the adaptive control unit including an artificial neural network that is adapted to changing driving conditions or patterns, the artificial neural network comprising an input layer, a hidden layer and an output layer, wherein the input layer comprises between five and fifty neurons, the hidden layer comprises between five and fifty neurons and the output layer comprises between one and ten neuron; and
a combined control strategy for an entire operating range of the hybrid electric vehicle including a plurality of control strategies for a plurality of driving profiles with optimized operation points of each of the plurality of driving profiles, wherein the artificial neural network combines the optimized operation points of each of the plurality of driving profiles into the combined control strategy.
5 Assignments
0 Petitions
Accused Products
Abstract
This invention relates a control strategy for a hybrid electric vehicle having an electric motor, a battery and an internal combustion engine. The control strategy improves fuel economy and reduces emissions while providing sufficient acceleration over a varying set of driving conditions through an adaptive control unit with an artificial neural network. The artificial neural network is trained on a pre-processed training set based on the highest fuel economies of multiple control strategies and multiple driving profiles. Training the artificial neural network includes a training algorithm and a learning algorithm. The invention also includes a method of operating a hybrid electric vehicle with an adaptive control strategy using an artificial neural network.
-
Citations
20 Claims
-
1. A hybrid electric vehicle including an electric motor, a battery and an internal combustion engine, the vehicle comprising:
-
a power control module having an adaptive control unit for interfacing with sensors and actuators of the electric motor, the battery and the internal combustion engine; the adaptive control unit including an artificial neural network that is adapted to changing driving conditions or patterns, the artificial neural network comprising an input layer, a hidden layer and an output layer, wherein the input layer comprises between five and fifty neurons, the hidden layer comprises between five and fifty neurons and the output layer comprises between one and ten neuron; and a combined control strategy for an entire operating range of the hybrid electric vehicle including a plurality of control strategies for a plurality of driving profiles with optimized operation points of each of the plurality of driving profiles, wherein the artificial neural network combines the optimized operation points of each of the plurality of driving profiles into the combined control strategy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A hybrid electric vehicle including an electric motor, a battery and an internal combustion engine, the vehicle comprising:
-
a power control module having an adaptive control unit for interfacing with sensors and actuators of the electric motor, the battery and the internal combustion engine; the adaptive control unit including an artificial neural network that is adapted to changing driving conditions or patterns, wherein the artificial neural network includes an input layer having about 20 neurons, a hidden layer having about 20 neurons and an output layer having about 1 neuron; and a combined control strategy for an entire operating range of the hybrid electric vehicle including a plurality of control strategies for a plurality of driving profiles with optimized operation points of each of the plurality of driving profiles, wherein the artificial neural network combines the optimized operation points of each of the plurality of driving profiles into the combined control strategy. - View Dependent Claims (12, 13, 14, 15, 16)
-
-
17. A method of operating a hybrid electric vehicle comprising:
-
providing a hybrid electric vehicle having an adaptive control unit, wherein the adaptive control unit includes an artificial neural network; receiving input signals from sensors of the hybrid electric vehicle; calculating output signals in the adaptive control unit based on maximizing fuel economy, minimizing emissions, meeting peak power demands and providing acceptable transient response during changing driving conditions; sending output signals to an internal combustion engine or an electric motor of the hybrid electric vehicle; and training the artificial neural network with a plurality of control strategies for various driving conditions or profiles for a sufficient number of iterations and combining optimized operation points of each of the various driving conditions or profiles into a combined control strategy, wherein training includes a Levenberg-Marquardt training algorithm and a gradient decent learning algorithm with momentum weight/bias. - View Dependent Claims (18, 19, 20)
-
Specification