# Home > Actuators > Precision measuring

```
```

**Download**

**98**

times
**Topic under **Precision measuring

**Source:** ntrs.nasa.gov

**File size:** **3.17 MB**

**File type:** **pdf**

**Last download on:**
Thu Apr 12, 2018 02:55:02 AM

__Short Desciption__:

... actuator, cryogenic actuator 1. INTRODUCTION Electromechanical actuators with large stroke and high precision are ... Cryogenic displacement measurement results. (a) actuator ...

__Summary__:

In this paper, PMN-PT single crystal piezoelectric stack actuators and flextensional actuators were designed, prototyped
and characterized for space optics applications. Single crystal stack actuators with footprint of 10 mm x10 mm and the
height of 50 mm were assembled using 10 mm x10mm x0.15mm PMN-PT plates. These actuators showed stroke > 65 –
85 ?m at 150 V at room temperature, and > 30 ?m stroke at 77 K. Flextensional actuators with dimension of 10mm x 5
mm x 7.6 mm showed stroke of >50 ?m at room temperature at driving voltage of 150 V. A flextensional stack actuator
with dimension of 10 mm x 5 mm x 47 mm showed stroke of ~ 285 ?m at 150 V at room temperature and > 100 ?m at
77K under driving of 150 V should be expected. The large cryogenic stroke and high precision of these actuators are
promising for cryogenic optics applications.

Bookmark or share this info on Google+ and leave comment at below :

```
```

```
```

```
People who downloaded this also viewed in this sites:
```

__Section 1-2 - Linear Measure and Precision__

Section 1-2 - Linear Measure and Precision A. Definitions 1. A line segment can be measured because it has two _____. a. A segment with endpoints A...__PRECISION MEASUREMENT OF SMALL DIAMETER HOLE IN A METALLIC OBJECT__

PRECISION MEASUREMENT OF SMALL DIAMETER HOLE IN A METALLIC OBJECT ... University of Science and Technology, Hong Kong INTRODUCTION ... with different...__PowerPoint Presentation__

A straightedge is a precision ground metal measuring gauge that is used to check the flatness of engine components when used with a feeler gauge....

```
Leave comment :
```

"Cryogenic Piezoelectric Actuator"

```
Related Free Files
```

```
Precision in situ volume measurement of... - Download:
```

**64** times

Introduction to Small Signal Displacement... - Download: **67** times

MECHANICAL DESIGN OF A PRECISION INSTRUMENT... - Download: **110** times

An Introduction to Modern Measurement Theory... - Download: **90** times

Precision Measurement Tools... - Download: **88** times

Optimal dynamic performance for... - Download: **56** times

PRECISION MEASUREMENT OF SMALL DIAMETER HOLE... - Download: **98** times

Design of a Precision Linear-Rotary... - Download: **66** times

Performance, Precision and Electrical Tools... - Download: **84** times

ACTUATOR 2006: New Linear Ultrasonic Piezo... - Download: **71** times