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Advanced Engineering 2020

NEC, Birmingham(B40 1NT)

04/11/2020 - 05/11/2020

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Drives & Controls Exhibition

NEC, Birmingham(B40 1NT)

25/01/2021 - 27/01/2021

The show brings together key suppliers of state-of-the-art equipment representing the multi-tasking culture (more)

PPMA Show 2020

NEC, Birmingham(B40 1NT)

28/09/2021 - 30/09/2021

PPMA Show 2020 is the UK’s largest ever event dedicated to state-of-the-art processing and packaging (more)

Smaller Piezo LEGS motor with integrated encoder

Smaller Piezo LEGS motor with integrated encoder Expanding on the successful Piezo LEGS rotary motor series LR50/80 is a new reduced dimension LR17 with integrated encoder. This is the first step in the long-term aim to broaden the range of rotary motors as demanded by the market place. The LR17 is PiezoMotor's smallest rotary Piezo motor yet, and the first in a new series of rotary LEGS motors with integrated absolute encoders.

The company comments that the LR17 is the first motor in a series of four different sizes, which offers high resolution together with sensor from a very compact size with simple system integration. This small compact motor with diameter of just 17mm has all the benefits already established with the Piezo LEGS technology. Despite its small dimensions the motor develops a stall torque of 30mNm without any backlash. The company says that conventional motors of a similar size can only reach these torque levels with the addition of a gearhead, which adds to the size and introduces backlash into the system.

The motor construction is based around the established friction drive method which results in good self-locking characteristics meaning that the motor can hold position without consuming any power. The integrated 15-bit magnetic absolute encoder gives a closed loop resolution of 0.2 milli-radians (0.01º), and as always with the Piezo LEGS technology, you get sub-micro-radian resolution in open loop.

The Piezo LEGS technology makes it possible to continue improving existing customer designs when conventional motor technology has reached its limit.
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