Abstract
Calling it obsolete technology would be far too emphatic, but pneumatically operated cylindrical linear actuators draw the keen attention of engineers who are involved in the design of micro/nano positioning, where any electric or magnetic interferences are to be prohibited to secure a micro-machining in production of the latest μ-chips. This paper aims to describe our preliminary challenge to realize a precise pneumatic positioning system, which includes a very conventional pneumatic cylinder having inherent and tough stick-slips, a servo-valve with undesirable dead-zone and the Simple Adaptive Control Algorithm that accommodates non-linear functions to minimize the influence of stick-slip without risk of system instability. The stick-slip deteriorates both of transient and steady-state response, therefore the effectiveness of our proposal should have been confirmed by experiment in this paper.
