Follow-up control of pneumatic cylinders by passive dynamic control

The passive dynamic control (ldquoPDCrdquo) is a new mechanical system control method based on inherently safe design, having energy-saving effect and high safety. The authors made an experimental setup (PDC pneumatic cylinder), pneumatic cylinders equipped with an electromagnetic friction brake and a load cell, respectively, and demonstrated the effectiveness of the PDC-applied positioning control. This paper describes two types of follow-up controls using such PDC pneumatic cylinder: one is trajectory follow-up control to follow up a circular trajectory biaxially, and the other is time follow-up control to follow up a sine curve uniaxially.