公开(公告)号：EP3174192A1

公开(公告)日：2017-05-31

申请号：EP16200408.9

申请日：2016-11-24

申请人： Gefran S.p.A.

发明人： COLOMBO, Davide ,  MOLTENI, Roberto ,  VISIOLI, Antonio ,  SIMONI, Luca

IPC分类号： H02P8/18 ,  F04D15/00 ,  H02P6/10 ,  F04B1/00 ,  H02P23/00

CPC分类号： H02P23/0004 ,  B29C45/7666 ,  B29C2945/76692 ,  F04B1/06 ,  F04B49/06 ,  H02P6/10

摘要： The invention relates to a method for controlling an electric motor (M) associated with a servo-pump (200) of an industrial machine in order to modify a hydraulic pressure applied by the servo-pump (200) to a hydraulic load (10). The electric motor can be moved on the basis of electric actuation signals generated by an electronic control unit (100). The method comprises the steps of:
- providing the electronic control unit with a first signal (Pfed) indicative of a current pressure value detected in a hydraulic circuit (11) of the servo-pump;
- providing the electronic control unit with a second signal (Pref) indicative of a reference pressure value;
- providing the electronic control unit with a third signal (Sfed) indicative of a displacement (θ) angle of a rotor of the motor, detected on a plane orthogonal to the rotation axis from a reference position;
- generating, based on said first, second and third signals, a fourth signal (BTref) indicative of a driving torque value which can be applied to the motor and associated with a torque control signal (Tref) configured to control the movement of the motor of the servo-pump. The method further comprises the following steps carried out by the electronic control unit:
- comparing the first and the second signals to generate a pressure error signal (PE);
- multiplying the pressure error signal by a trigonometric function calculated in relation to the displacement angle obtained from the third signal to generate a first transformed signal (PEt);
- integrating over time the first transformed signal to generate a first integrated signal (PEint);
- multiplying the first integrated signal by the trigonometric function calculated in relation to the sum of said displacement angle (θ) and an offset angle (θ off ) to generate a second transformed signal (Tff), which is representative of a compensation driving torque value;
- adding the second transformed signal to the fourth signal to generate the control signal (Tref).

摘要翻译： 本发明涉及一种用于与工业机械的伺服泵（200），以修改由伺服泵（200）施加的液压至液压负载相关联的电动机（M）的控制（10） ， 电动马达可以在电子控制单元（100）生成的由电致动信号的基础上被移动。 该方法包括以下步骤： - 提供电子控制单元，其具有第一信号（PFED）指示所述伺服泵的液压回路（11）检测出的当前的压力值的; - 提供电子控制单元与第二信号（县）指示的基准压力值; - 提供电子控制单元与第三信号（SFED）表示位移（¸）的电动机的转子，垂直于从基准位置的旋转轴线的平面上的检测到的角度; - 产生，基于所述第一，第二和第三信号，第四信号（BTref）表示可以应用到电动机和相关联的与被配置为控制所述电机的运动的转矩控制信号（TREF）的驱动扭矩值的 伺服泵。 该方法进一步包括由电子控制单元执行的以下步骤： - 比较所述第一和第二信号，以产生一个压力误差信号（PE）; - 通过相对于计算从所述第三信号获得的位移角三角函数相乘的压力误差信号，以产生转化的（PET）的第一信号; - INTEGRA婷加班所述第一变换信号来生成第一积分信号（PEINT）; - 通过相对于计算值到所述位移角（¸）的总和，并在偏移角三角函数相乘的第一积分信号（°关闭），以产生第二变换的信号（TFF），所有它是代表一个补偿的驱动转矩值 ; - 将第二变换信号与第四信号，以产生所述控制信号（TREF）。