IDEA #9G1SPY New High Torque Computerized Ultrasonic Piezoelectric Nanomotor Pm-22rs For Robotic Applications

THE SCIENCE AND TECHNOLOGY CENTER IN UKRAINE NEW HIGH TORQUE COMPUTERIZED ULTRASONIC PIEZOELECTRIC NANOMOTOR PM-22RS FOR ROBOTIC APPLICATIONS nano-positioning rotation Description piezoelectric LILEYA's nanomotor PM-22RS (fig. 1) on the bases standing wave combine high torque, variable speed, and high angular res­ olution using a shaft-mounted 1000 counts/revolution optical encoder. The piezoelectric motor PM-22RS can be used in either continuous or stepper mode to provide accu­ rate angular positioning. When the piezoelectric motor is de-energized, it operates as a positioning holder (brake) with practically undetectable backlash and drift. Piezoelectric motor PM-22RS with feedback sensor has been manufactured on the bases of the piezoelectric motor PM-22R (www.piezomotor.com.ua). The motor is con­ nected with the controller PSF-3 IVF IBM through the special cable. Communication with the computer is carried out through the COM port. The software PSF-3 IVF enable to work with 3, 6, 9, 12 motors simultaneously. Innovative Aspect and Main Advantages The motor operation employs the radial oscillation of a proprietary ring-based piezoelectric resonator operating at approximately 80 kHz. Each cycle of radial nano-oscilla- tion by means of the rotor produces a single step of angu­ lar movement. A continuous sequence of single angular steps results in a smooth angular/rotary movement of the shaft on which the rotor is mounted. The magnitude of the resulting nano-movement depends on the number of single angular steps made, which depends on the duration of exci­ tation. The minimum step approximately 0.5 arcsec corre­ sponds to duration of excitation of between 40 and 60 μβ. The light-weight rotor of the motor (approximately 40 g) and the high torque 0.50 N*m results in high acceleration, so that the time from a demand to maximum speed (30 rev/min) is less then 0.3 ms. The corresponding decelera­ tion torque is 0.55 N*m. These characteristics facilitate a smooth transition from an angular step of 0.5 arcsec to continuous motion, a wide range of angular velocities, from 0.5 arcsec/s to 30 rev/min (equivalent to about 6 orders of magnitude dynamic range). Technical data for piezoelectric nanomotor PM-22RS Maximum Torque Self-Braking Torque Maximum Speed Minimum Angular Step Dynamic Range Supply Voltage Operating Current Motor Weight Dimensions Controller Programmable accuracy. 0.5 arcsec 2 kHz 12 V PSF-3 IVF IBM series (3 channels) 0.50 N*m 0.55 N*m 30 rev/min no more than 400 mA 360 g 050x100 5.4 arcmin Fig. 1. Piezoelectric NanoMotor PM-22RS Devices on the bases PM-22RS Areas of Application LILEYA's advanced piezoelectric nanomotor PM-20RS is designed to meet a variety of positioning needs for the sci­ entific, biotechnology, medical, semiconductor and indus­ trial markets. It is suitable for applications such as: preci­ sion robotic applications (fig. 2, fig. 3), patch clamp and IVF micromanipulators on cells in culture, microinjection systems, MRI-guided robotic surgery applications, inte­ grated circuits applications, 1С mask generation and align­ ment, fiber optic assembly and alignment, laser production. Stage of Development LILEYA's unique designs is being patented : - in the World ( PCT Application) - in Ukraine ( Application Serial N 2006 11804) LILEYA builds motors with superior high performance characteristics and it can produce 1000 motors per year now, larger production is possible. Contact Details Contact person: Dr. Sc. Sergii Petrenko Small Scientific Production Enterprise LILEYA Ltd. Contact address: Kiev-03150, Predslavinskaya 39, off. 511 Tel/Fax: (380-44) 502-1376 Mob.: 8(067) 918-32-68 E-mail: tyll@naverex.kiev.ua Web-site: www.piezomotor.com.ua