System and method for determining deceleration based on environmental information

A method for dynamically adjusting coasting regeneration for an electrified vehicle, the electrified vehicle having a first sensor that senses dynamic artifact data and provides a first signal indicative of the dynamic artifact data, a second sensor that senses one of static and pseudo-static artifact data and provides a second signal indicative of the static and pseudo-static artifact data, the method comprising:

• receiving, at a controller, a current velocity of the vehicle;
• determining, at the controller, a first candidate deceleration rate based on the first signal comprising:
• determining a first aggressive deceleration rate, a first mild deceleration rate and a first low deceleration rate;
• and
• interpolating an optimized first deceleration rate candidate based on the first aggressive, mild and low deceleration rate;
• determining, at the controller, a second candidate deceleration rate based on the second signal comprising:
• determining a second aggressive deceleration rate, a second mild deceleration rate and a second low deceleration rate;
• and
• interpolating an optimized second deceleration rate candidate based on the second aggressive, mild and low deceleration rate;
• selecting, at the controller, one of the optimized first and second deceleration rate candidates as a selected deceleration rate that corresponds to a most aggressive deceleration rate candidate;
• estimating, at the controller, a first proposed change in velocity over a first time based on the first and second deceleration rates;
• determining, at the controller, a second proposed change in velocity over a second time based on the first proposed change in velocity;
• determining, at the controller, a proposed total distance travelled by the vehicle based on the second proposed change in velocity;
• determining, at the controller, whether a target velocity has been reached based on the proposed total distance;
• selecting, at the controller, the proposed total distance as a confirmed calculated distance based on a determination that the target velocity has been reached;
• determining, at the controller, a wheel torque based on the selected deceleration rate and confirmed calculated distance;
• and
• executing, at the controller, the determined wheel torque by the electrified powertrain to achieve the selected deceleration rate while providing optimized regenerative braking energy to the battery system.