反力センサを有する射出装置における故障検出器の設計法(機械力学,計測,自動制御)

概要

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In this paper, we propose a design method of the fault detector of the injection unit. The injection unit is controlled as a speed control system with a reaction force sensor. We construct a residual generator by using a disturbance observer, and the residual signals are used for fault detection. The properties of the transfer functions from the sensor output and the control input to the residual signals are analyzed, and the frequency characteristics of the speed control system and that of the reaction force are utilized. We indicate the possibility of the fault isolation structurally by showing the design method of the post filter and the condition of the band width of the system. Our method can be executed on the normal operation mode. Usefulness of our method is verified by experiments for the actual system, and the fault detection and isolation for the several fault modes are demonstrated.
社団法人日本機械学会の論文
2007-09-25