The Second-order Rotatable Designs And Slope Rotatable Designs In Response Surface

Box and Hunter(1959) put forward a way of rotating, which made it easier for the response surface to be merger and to provide the spherical information on the contour.This article put the relevant theoretical basis and system of the response surface firstly. Then it introduced the selection of point set of second rotatable design and improved the method of construction of the second order slope rotata.ble design. According to the selection of point set of the second rotatable design, it concluded the characteristics and the method of point set selec-tion, and analyzed the method of the dimension point set from k-1dimension into k dimension point set:finally, it introduced the construction of modified second-order slope rotatable design by central composite designs(CCD). balanced incomplete block designs(BIBD). symmetrical un-equal block arrangements(SUBA) with two unequal block sizes, pairwise balanced designs(PBD).