Abstract: A method of adaptive Vold-Kalman order tracking (AVK_OT), based on instantaneous frequency estimation was introduced here. The parameters of weighting factor, filter bandwidth and rising affecting the result of AVK_OT, were described in detail. The relationships of weighting factor, filter bandwidth and rising time were summarized by means of mathematic expressions. Simulations verified the influence and action of the three parameters on the process of AVK_OT.