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CN101536301A 用于得到机械式换向的直流伺服电动机的转子的旋转位置的方法 失效 - 权利终止

用于得到机械式换向的直流伺服电动机的转子的旋转位置的方法
摘要：
一种用于得到机械式换向的直流伺服电动机(5)的转子的旋转位置的方法，该伺服电动机被安置在桥式电路的横向支路上，其电枢电流是由一个电机式操作的换向装置(28)给定的，配有一个控制和分析处理单元(17)，该单元分析处理包含在电枢电流(2)中的、并被反馈到机械式换向装置的电流波动(3)，其特征在于：从换向装置(28)的每个转换触点(6，7)，利用一个反馈转换电路(20)，分别将一个接触电压－反馈信号(9，10)反馈到控制和分析处理单元(17)；控制和分析处理单元(17)，在使用至少一个接触电压－反馈信号(9，10)的情况下，求出一个触点弹跳－时间间隔(4)，并且在此触点弹跳－时间间隔(4)内对电流波动(3)进行估计，而在该时间间隔内由于因至少一个转换触点(6，7)的换向过程所引起的触点弹跳之故而不能对电流波动进行分析处理。
摘要（英）：

Method for determining the angular position of the rotor of a mechanically commutated DC servo motor (5), which is arranged in the transverse branch of a bridge circuit, and the armature current of which is preset by an electromechanically activated switching device (28), - with a control and analysis unit (17) which analyzes the current ripple (3) present in the armature current (2) and attributable to the mechanical commutation, characterized in that - from each switch contact (6, 7) of the switching device (28), a contact-voltage feedback signal (9, 10) is fed back to the control and analysis device (17) by means of a feedback circuit (20), and in that the control and analysis unit (17), by using the at least one contact-voltage feedback signal (9, 10), determines a contact vibration time interval (4) and performs an estimate of current ripple (3) during this contact vibration time interval (4), during which an analysis of the current ripple due to contact vibrations which are caused by a switching process of at least one of the switch contacts (6, 7) is not possible.

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