Thanks for your reply. That means , the moving force along the Y direction is the cogging force but as per the transient analysis, everything which comes under BAND will tend to experience force. and cogging force should exist in x and z direction if the translator is moving in y direction. Translator is moving due to band applied to it and this is experiencing force which is responsible for EMF, given as BiL. Please correct me as this been long i am struggling to sort this out.nThanks again.n