Method of managing available operating states in an electric vehicle powertrain

A method of managing available operating states in an electrified powertrain comprising:

• identifying a first plurality of operating states that are capable of being achieved by the electric powertrain;
• identifying a first operating state of the first plurality of operating states that is being used to drive a vehicle wheel at an output speed;
• determining a fault in a second operating state of the first plurality of operating states, the fault preventing the second operating state from being available to drive the vehicle wheel;
• determining, via a processor, if the fault in the second operating state prevents a third operating state of the first plurality of operating states from being available to drive the vehicle wheel;
• identifying a second plurality of operating states that are available to drive the vehicle wheel;
• determining a third plurality of operating states from the second plurality of operating states, wherein the output speed of the vehicle wheel is within a first range of output speeds for each of the operating states in the third plurality of operating states;
• determining a fourth plurality of operating states from the third plurality of operating states, wherein the output speed of the vehicle wheel is within a second range of output speeds for each of the operating states in the fourth plurality of operating states;
• wherein the first range of output speeds is within an extreme hardware-limited operating range by a first margin for each operating state of the fourth plurality of operating states;
• and wherein the second range of output speeds is within the first range of output speeds by a second margin for each operating state of the fourth plurality of operating states;
• and
• transitioning, via the processor, the electrified powertrain from the first operating state to a fourth operating state selected from the fourth plurality of operating states if the fourth operating state is available.