Patent ID: 7322659

Claim:
A braking distribution method in a vehicle having a regenerative braking system, comprising: receiving a braking request; receiving a first amount of braking that is available from front regenerative braking; receiving a second amount of braking that is available from rear regenerative braking; calculating a front base braking based at least in part on the braking request and a front base braking distribution; calculating a rear base braking based at least in part on the braking request and a rear base braking distribution; determining a front regenerative braking request based on the first amount of braking and the front base braking; and determining a rear regenerative braking request based on the second amount of braking and the rear base braking; allocating, if the rear regenerative braking request is equal to or exceeds the rear base braking, a front friction braking request equal to the result of the braking request less the front regenerative braking request and the rear regenerative braking request; and allocating, if the rear regenerative braking request is less than the rear base braking, a front friction braking request equal to the result of the braking request multiplied by the front base braking distribution less the front regenerative braking request; and allocating as a rear friction braking request the braking request less the front regenerative braking request less the rear regenerative braking request and less the front friction braking request.