ELECTROMAGNETIC VALVE CONTROL DEVICE

To provide an electromagnetic valve control device which can prevent that a current larger than a current target value flows to a coil of an electromagnetic valve having a pilot valve, a main valve and the coil.SOLUTION: An electromagnetic valve control device for controlling an electromagnetic valve having a pilot valve, a main valve and a coil, and opening and closing the pilot valve and the main valve by using a current flowing to the coil comprises: a current detection part for detecting the current flowing to the coil; an indication value decision part for sequentially deciding an indication value of a duty ratio for adjusting the current flowing to the coil; and a drive part for making the current flow to the coil on the basis of the indication value. The indication value decision part comprises a feedback control part (S5) for deciding a succeeding indication value to a large value as a current difference which is obtained by subtracting a current detection value from a current target value flowing to the coil in order to open the main valve is large. When the current detection value is equal to a preset minimum value or smaller, the feedback control part sets the succeeding indication value to a value which is obtained by adding a prescribed value to a preceding indication value irrespective of the current difference.SELECTED DRAWING: Figure 4 【課題】パイロット弁とメイン弁とコイルとを備えた電磁弁のコイルに電流目標値よりも大きい電流が流れてしまうことを抑制できる電磁弁制御装置を提供する。【解決手段】パイロット弁とメイン弁とコイルとを備え、コイルに通電される電流により、パイロット弁およびメイン弁が開閉する電磁弁を制御する電磁弁制御装置であって、コイルに流れる電流を検出する電流検出部と、コイルに流す電流を調整するためのデューティ比の指示値を、逐次、決定する指示値決定部と、指示値に基づいてコイルに電流を流す駆動部とを備え、指示値決定部は、メイン弁を開くためにコイルに流す電流目標値から電流検出値を引いた電流差が大きいほど、次回の指示値を大きい値に決定するフィードバック制御部（Ｓ５）を備え、フィードバック制御部は、電流検出値が予め設定した最小値以下である場合、電流差によらず、次回の指示値を、前回の指示値に所定値を加えた値とする。【選択図】図４