ACTUATION SYSTEMS

UNIT - 3

OUTLINE

Introduction

Cylinders

Cylinder Sequencing

Servo and Proportional control valves

CYLINDERS

The hydraulic or pneumatic cylinder is an example of a linear actuator.

The principles and form are the same for both hydraulic and pneumatic versions differences being purely a matter of size as a consequence of the higher pressures used with hydraulics.

The cylinder consists of a cylindrical tube along which a piston/ram can slide.

There arc two basic types, single- acting cylinders and double-acting cylinders.

CYLINDERS

CYLINDERS TYPES – SINGLE ACTING

CYLINDERS TYPES – DOUBLE ACTING

CYLINDERS TYPES – DOUBLE ACTING