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Home Biotechnologies New High Torque Computerized Ultrasonic Piezoelectric Nanomotor PM-22RS for Robotic Applications

New High Torque Computerized Ultrasonic Piezoelectric Nanomotor PM-22RS for Robotic Applications

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To see Youtube demo's click here or do Youtube search for "DTI Piezoelectric Valves"


LILEYA’s nano-positioning rotation piezoelectric nanomotor PM-22RS (fig.1) on the bases standing wave combine high torque, variable speed, and high angular resolution 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 accurate 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 ( The motor is connected 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-oscillation by means of the rotor produces a single step of angular 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 excitation. The minimum step approximately 0.5 arcsec corresponds to duration of excitation of between 40 and 60 μs. 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 deceleration 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 ––––––––––––––––– 0.50 N*m
  • Self-Braking Torque ––––––––––––––– 0.55 N*m
  • Maximum Speed –––––––––––––––––– 30 rev/min
  • Minimum Angular Step ––––––––––––– 0.5 arcsec
  • Dynamic Range ––––––––––––––––––– 2 kHz
  • Supply Voltage ––––––––––––––––––– 12 V
  • Operating Current ––––––––––––––––– no more than 400 mA
  • Motor Weight ––––––––––––––––––––– 360 g
  • Dimensions –––––––––––––––––––––– 50x100
  • Controller ––––––––––––––––––––––– PSF-3 IVF IBM series (3 channels)
  • Programmable accuracy –––––––––––– 5.4 arcmin

Areas of Application

LILEYA’s advanced piezoelectric nanomotor PM-20RS is designed to meet a variety of positioning needs for the scientific, biotechnology, medical, semiconductor and industrial markets. It is suitable for applications such as: precision robotic applications (fig.2, fig.3), patch clamp and IVF micromanipulators on cells in culture, microinjection systems, MRI-guided robotic surgery applications, integrated circuits applications, IC mask generation and alignment, fiber optic assembly and alignment, laser production.

Fig. 1 Piezoelectric NanoMotor PM-22RS

Devices on the bases PM-22RS

Fig. 2 MicroRobotic System PRS-3
for control of computer

Fig. 3 MicroRobotic System PRS-3
for well plate applications

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

Dr. Sergii Petrenko, Director
Organization: Small Scientific Production Enterprise "LILEYA'ltd
Address: Kiev-02002, 3G Lunacharskogo str.
Tel/Fax: (380-44) 580-1376, Mob.: 8(067) 918-32-68
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