Electro-pneumatic system for controlling a double-acting pneumatic actuator

US8375842B2 · kind B2 · utility

Assignee

• SAMSON AKTIENGESELLSCHAFT · DE

Inventors

• Stefan Kolbenschlag · Darmstadt, DE
• Dirk Klee · Gerolzhofen, DE

Key dates

• Filing date: Oct 21, 2009
• Grant date: Feb 19, 2013
• Expiry date: Dec 16, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2211/7053
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In an electro-pneumatic system for controlling a double-acting pneumatic actuator having first and second working chambers, first and second preliminary pneumatic control components generate first and second preliminary pneumatic control signals transferred to respective first and second main pneumatic control components having outputs connected to the respective first and second working chambers. An electronic splitter circuit precedes the first and second preliminary pneumatic control components for splitting and inverting an electrical control signal input to the splitter circuit around an electrical mean control value to create first and second mirror-inverted electrical control signals respectively connected to the respective first and second preliminary pneumatic control components. The electrical mean control value is adjustable such that the first and second preliminary control components respectively generate the respective first and second preliminary pneumatic control signals mutually inverted around a pneumatic mean value.