A design of a compact and low-cost programmable high-voltage pulser for a linear piezo-stepper motor, using an 8 bit reduce instruction set computers (RISC) microcontroller, a high-voltage complementary metal oxide semiconductor (HVCMOS) converter, and an adjustable three-terminal high-voltage regulator is presented. The design consists of 12 independent digital channels of high-voltage output ...

Two novel devices, torsional actuator and torsional stepper motor, are described and their performance is investigated in detail. Both devices were designed to produce large angular displacement and large torque output from the piezoelectric d15 shear response. In the torsional actuator, the large displacement can be achieved due to built-in amplification of piezoelectric strain using the aspec...

IBM PCs with parallel printer ports are widely available in teaching and research laboratories. This paper describes a novel system for controlling any equipment in general, positioning with stepping motors in particular via the parallel Centronics printer port of an IBM PC or compatible. Techniques are presented for exploring the unused parallel port or exploiting the Centronics printer port f...

Abstract The magnetic structure of the proposed variable period undulator consists cylindrical magnets. Each magnet can be rotated by a small stepper motor, in order to adjust field and form an arbitrarily shaped profile on-axis. Meanwhile, short prototype exists, equipped with scalable control system drive large amount motors. This paper describes details implementation, results tests on diffe...