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1. 发明公开

EP0952507A1 CURRENT CONTROL APPARATUS 失效
标题翻译： STROMSTEUERUNGSGERÄT
公开(公告)号：EP0952507A1
公开(公告)日：1999-10-27
申请号：EP97930799.8
申请日：1997-07-15
申请人： KOMATSU LTD.
发明人： SHIMAZU, Mitsuhiro , AKUSHICHI, Shuki
IPC分类号： G05F1/56 , H01F7/18 , F16K31/06 , G05B11/28
CPC分类号： H01H47/325 , F15B13/044 , F15B21/045 , F15B21/087
摘要： A current control apparatus capable of accurately and stably controlling a current, which is supplied to a controlled system, such as a coil of a solenoid, even when a control target value varies greatly at predetermined time intervals. In this apparatus, a value (y3) of a current passing through the controlled system (33) is detected, and the detected current value (y3) is outputted at predetermined time intervals. On the basis of a preceding corrected current value (y4old) and a currently outputted current value (y3), a currently corrected current value (y4) is computed so that this value comes to be intermediate between the preceding corrected current value (y4old) and currently outputted current value (y3), and the resultant current value is outputted. On the basis of a preceding corrected duty (d3old) and a currently outputted duty (d1), a current corrected duty (d3) is computed so that the current corrected duty (d3) has a value intermediate between those of the preceding corrected duty (d3old) and the currently outputted duty (d1). On the basis of a target current value (x1) to be inputted, the outputted corrected current value (y4) and the outputting corrected duty (3d), the duty (d1) is computed, and the results are outputted.
摘要翻译：即使控制目标值以预定的时间间隔大幅变化，也能够精确稳定地控制提供给诸如螺线管的线圈的受控系统的电流的电流控制装置。在该装置中，检测通过受控系统（33）的电流的值（y3），并且以预定的时间间隔输出检测的电流值（y3）。基于先前校正的电流值（y4old）和当前输出的电流值（y3），计算当前校正的电流值（y4），使得该值变为在先前校正电流值（y4old）和当前输出电流值（y3），并输出合成电流值。根据先前校正的占空比（d3old）和当前输出的占空比（d1），计算当前校正的占空比（d3），使得当前校正的占空比（d3）具有在先前校正的占空比 d3old）和当前输出的占空比（d1）。根据要输入的目标电流值（x1），计算输出的校正电流值（y4）和输出校正占空比（3d），占空比（d1），并输出结果。

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