Abstract

An automatic control system for the electrostatic accelerator hasbeen developed by adopting the PLC (Programmable Logic Controller)control technique, infrared and optical-fibre transmission techniqueand network communication with the purpose to improve theintelligence level of the accelerator and to enhance the ability ofmonitoring, collecting and recording parameters. In view of thecontrol system' structure, some anti-interference measures have beenadopted after analyzing the interference sources. The measures inhardware include controlling the position of the corona needle,using surge arresters, shielding, ground connection and stabilizingthe voltage. The measures in terms of software involveinter-blocking protection, soft-spacing, time delay, and diagnosticand protective programs. The electromagnetic compatible ability ofthe control system has thus been effectively improved.

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