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US 12,409,779 B2Granted
Inverter phases and parameters as oscillator in vehicle sound generator
AssigneeBorgWarner US Technologies LLC
InventorEli David Hoopengarner
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Abstract
A sound synthesis system and method are provided for an electric or hybrid electric vehicle. The system receives an audio signal from an inverter of the vehicle comprising an analog waveform, a digital waveform, or a parameter. The audio signal from the inverter is synthesized and combined with another audio signal via at least one of combination, superimposition, mixing, multiplication, and adding, and the combined signal is amplified and output as a synthesized audio signal or as a visual display of a waveform of the amplified, combined signal.
Claims16
A sound synthesis method comprising:
- receiving a dynamic inverter signal from an inverter coupled between a battery and a direct current electric machine of a vehicle, wherein the dynamic inverter signal is dependent on at least one of a parameter of the inverter and an operation of the inverter;
- synthesizing a first audio signal based on the dynamic inverter signal;
- generating a combined signal based on the first audio signal and a second audio signal using at least one of a combination function, a superimposition function, a mixing function, a multiplication function, and an adding function;
- generating an amplified combined signal by amplifying the combined signal;
- and
- outputting the amplified combined signal, wherein at least one of the first audio signal and the second audio signal is associated with a temperature sensor disposed within the vehicle, and wherein the temperature sensor is configured to measure a temperature of at least one of:
- an alternating current bus bar of the inverter, a direct current bus bar of the inverter, a printed circuit board of the inverter, a location along a coolant path of the vehicle, an insulated gate bipolar transistor (IGBT) of the inverter, a metal-oxide semiconductor field-effect transistor (MOSFET) of the inverter, and one or more end windings of an electric motor of the vehicle.
4 more elements
A sound synthesis system comprising:
- an input configured to receive a dynamic inverter signal from an inverter coupled between a battery and a direct current electric machine of a vehicle, wherein the dynamic inverter signal is dependent on at least one of a parameter of the inverter and an operation of the inverter;
- a synthesizer operatively connected to the input and configured to synthesize a first audio signal based on the dynamic inverter signal;
- a combination module operatively connected to the synthesizer and configured to generate a combined signal based on the first audio signal and a second audio signal using at least one of a combination function, a superimposition function, a mixing function, a multiplication function, and an adding function;
- an audio amplifier operatively connected to the combination module and configured to generate an amplified combined signal by amplifying the combined signal;
- an output module configured to output the amplified combined signal;
- and
- a temperature sensor disposed within the vehicle, wherein at least one of the first audio signal and the second audio is based on an output of the temperature sensor, and wherein the temperature sensor is configured to measure a temperature of at least one of:
- an alternating current bus bar of the inverter, a direct current bus bar of the inverter, a printed circuit board of the inverter, a location along a coolant path of the vehicle, an insulated gate bipolar transistor (IGBT) of the inverter, a metal-oxide semiconductor field-effect transistor (MOSFET) of the inverter, and one or more end windings of an electric motor of the vehicle.
5 more elements
Dependencies are inferred from the claim text.