Drive control device and ultrasonic motor system

Provided is a drive control device capable of prolonging the service life of an ultrasonic motor element. A drive control device (1) drives an ultrasonic motor element (2) having a vibrating body and a piezoelectric element provided on the vibrating body. A drive control device (1) is provided with: a speed detection unit (15) that detects the drive speed of an ultrasonic motor element (2); a control unit (16) that sets a drive condition for the ultrasonic motor element (2); and a drive circuit unit (17) that applies a drive voltage to a piezoelectric element on the basis of the drive condition set by the control unit (16). The control unit (16) sets the drive conditions of the ultrasonic motor element (2) on the basis of the cumulative operation time for each drive speed of the ultrasonic motor element (2). 提供一种驱动控制装置，能够实现超声波马达元件的长寿命化。驱动控制装置(1)是使超声波马达元件(2)驱动的驱动控制装置，该超声波马达元件(2)具有振动体和设置在振动体上的压电元件。驱动控制装置(1)具备检测超声波马达元件(2)的驱动速度的速度检测部(15)、设定超声波马达元件(2)的驱动条件的控制部(16)以及基于由控制部(16)设定的驱动条件向压电元件施加驱动电压的驱动电路部(17)。控制部(16)基于超