A method for estimating a rear wheel acceleration of an electronically controlled suspension system, comprising:
- a distance based buffer using step in which a front wheel acceleration buffer is provided, the front wheel acceleration buffer is constituted by several cells, the several cells are distinguished by a distance index, an acceleration value of the front wheel corresponding to the distance index is stored in each of the several cells, and the acceleration value of a rear wheel is estimated as an acceleration value of the front wheel, which is stored in a cell positioned behind a location of the front wheel by a wheelbase distance.