Abstract:The article describes new operating principles of ultrasonic actuators. The technical limitations of driving the piezoelectric actuators using the pulse-width modulation (PWM) will be discussed. The limitations caused by parameters of high-speed switching transistors (namely ultra-fast MOSFETs), by speed of the field-programmable gate arrays (FPGA) and by parameters of piezoceramic actuators will be examinated. Further, usage possibilities of resonant converters for the driving of piezoceramic actuators with t… Show more
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