The invention discloses a patch-type
ultrasonic motor, and a drive platform and a drive method thereof and aims at solving the technical problem that the
ultrasonic motor which individually adopts a beam structure or disk structure
elastomer is not ideal in overall output performance and the like. The patch-type
ultrasonic motor comprises a fixed base, a first
elastomer, a second
elastomer, a rotating body, keys, a thrust
ball bearing, a belleville spring, a nut and an output shaft, wherein the first elastomer is in a beam structure; the second elastomer is in a slab structure; a d<31> excitation mode is adopted by a rectangular piezoelectric
ceramic piece; a deformation direction of the rectangular piezoelectric
ceramic piece and the axis of the first elastomer are arranged at a + / -
alpha angle; an
excitation signal of an ultrasonic band is applied to the piezoelectric
ceramic piece; the first elastomer and the second elastomer are excited to generate longitudinal and
flexural vibration modes respectively; drive
friction force is generated by superposing and
coupling of the vibration
modes; and movement outputs of the patch-type ultrasonic motor are achieved. The patch-type ultrasonic motor has the technical advantages of high output power, stable motor operation, wide application range and the like, and has a wide application prospect in the technical fields of precision driving and micro positioning.