| Abstract |
This paper describes the operating principles of a miniaturized gate driver for a Shinsei USM60
Ultrasonic Motor (USM). The proposed driver consists of the following blocks: control algorithm
execution, speed calculation and task assignment, push-pull converter, USM piezo-deflection signal
detection, frequency generation, gating signal generation and communication between the PC and the
gate driver. Changes in control parameters and control strategy are facilitated through a Graphical
User Interface running in a Labview environment. Control algorithm execution, event tasking, setpoint
selection and speed/position calculation are executed by a PIC microcontroller. Gating generation and
frequency generation are performed by a field programmable gate array (FPGA) and a frequencysynthesizer
integrated circuit respectively. |
