The typical nonlinear characteristics of the pneumatic rotary actuator position servo system using proportional flow valves are experimentally studied.

A pneumatic rotary actuator angular position servo system is studied,which adopts 3-port proportional flow valve as a control device.

This paper studies the velocity stability of rotary cylinder with eccentric load.

To determine the influence of eccentric load on the motion of rotary cylinder mounted vertically quantificationally,a mathematic model was built and the simulation results show that the angular acceleration curves of rotary cylinder have distinguishing dual hump-shaped feature.

Based on advanced industry computer and high reliability integration singnal conditional modules,the on-line torque measurement facility of backrest angle adjuster,which drived by a swing cylinder,could test the torque and modulate angle accurately.

Analysis of rotary speed response characteristics of pneumatic vane motor

In order to study the dynamic characteristic of pneumatic vane motor,it is a key for us to determine the process parameters such as pressure and temperature of air chambers which are formed by vanes.

The paper expounds the structural characteristics of pneumatic vane motor and how to build the mathematic model based on mass flow rate continuity,law of thermodynamics and torque equilibrium principle.