US 12,409,779 B2
Inverter phases and parameters as oscillator in vehicle sound generator
Eli David Hoopengarner, Avon, IN (US)
Assigned to BORGWARNER US TECHNOLOGIES LLC, Wilmington, DE (US)
Filed by BorgWarner US Technologies LLC, Wilmington, DE (US)
Filed on Dec. 2, 2022, as Appl. No. 18/074,442.
Prior Publication US 2024/0181963 A1, Jun. 6, 2024
Int. Cl. B60Q 5/00 (2006.01); B60L 3/12 (2006.01); G10K 15/02 (2006.01)
CPC B60Q 5/008 (2013.01) [B60L 3/12 (2013.01); G10K 15/02 (2013.01); B60L 2270/42 (2013.01); B60Y 2306/11 (2013.01)] 16 Claims
OG exemplary drawing
 
1. 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.