Piezo Motors

MICROMO offers the following Piezo Motors:

	Piezo LEGS® Linear Motor	PiezoWave™ Motor	Piezo LEGS® Rotational Motor
Dimensions	22 mm X 10.8 mm X 11 mm	14 mm X 7.2 mm X 4.4 mm	27 mm X 23 mm
Weight	20 g	0.6 g	70 g
Velocity	12.5 mm/s	150 mm/s	13.5 rpm
Frequency Range	0 ...2100 Hz	91000 ...93000 Hz	0 ...3000 Hz
Stall Force/Torque	6.4 N	0.15 N	80 mNm
Holding Force/Torque	7.2 N	0.30 N	90 mNm
Phase Voltage	0 ...42 V	0 ...9 V	0 ...42V
Resolution	1 nm	500 nm	1 microrad
Step Displacement	3 micron	1 micron	0.35 mrad
Stroke	35 mm	8 mm	N/A
Phase Capicitance @ 22°C	430 nF	100 nF	645 nF
Power Consumption	5 mW/Hz		7.5 mW/Hz
Temperature Range	-20 ...+70°C	-20 ...+70°C	-20 ...+70°C
Links to the Data Sheets	[Piezo LEGS® Motor Data Sheet]	[PiezoWave™ Motor Data Sheet]	[Piezo LEGS® Rotational Motor Data Sheet]
Links to the Starter Kit information	[Piezo LEGS® Linear Motor Starter Kit]	[PiezoWave™ Motor Starter Kit]	[Piezo LEGS® Rotational Motor Starter Kit]

Piezo Basics
It all began in France more than 120 years ago. The two Curie brothers Jacques and Pierre discovered that by compressing a crystalline material such as Rochelle salt they could create electric voltage. The interesting thing is that the opposite is also true – if you place an electric field over a piezo crystal it changes shape. It is this shape-changing capacity that is the basis for PiezoMotor’s micro motor technology. Instead of Rochelle salt, piezoceramic materials have been developed to meet the requirements of modern applications.

Piezoelectric motors have been around for many decades. The first motors were developed fairly simultaneously by researchers in the former Soviet Union and in the USA. But it was not until the 1980’s that motors appeared in high  numbers in commercial products, the most well-known example being motors for camera lenses. Still, most of the piezo motors found on the market are targeted towards the research community and sold in fairly limited numbers.

Piezo LEGS® Motor

• Easily adapted to different specifications and demands
• Flexible design allows custom integration without concern of tuning surrounding mechanical structures
• Extremely stiff and stable performance make the motor ideal for dynamic positioning applications requiring nanometer precision
• High force to size ratio
• Easily manufactured in large qualities to reduce cost
• Simple drive and control electronics

PiezoWave™ Motor

• Designed for high volume applications and low cost
• Robust design giving stable performance in different environmental conditions as well as resistance to vibrations and shocks
• High force to size ratio
• Low power consumption
• High speed
• Easily integrated