公开(公告)号：US06211636B1

公开(公告)日：2001-04-03

申请号：US09155717

申请日：1998-10-05

申请人： Shunsuke Matsubara ,  Yasusuke Iwashita ,  Hidekatsu Hamatani

发明人： Shunsuke Matsubara ,  Yasusuke Iwashita ,  Hidekatsu Hamatani

IPC分类号： H02K1732

CPC分类号： B30B15/14

摘要： A torque command Tc is restricted to a torque limit value Tm′ by torque limiting means and delivered to current restricting means for a motor. The torque limit value Tm′ is derived by adding a torque limit correction value &Dgr;Tm as calculated by torque limit correction value calculating means to a torque limit value Tm corresponding to the target pressing force F. The torque limit correction value &Dgr;Tm is supplied in accordance with the acceleration value when the motor is accelerated or decelerated. This acceleration is calculated from the feedback velocity Vf from the velocity detector, or the command velocity Vc. Alternatively, it may be derived from the output of an observer which inputs the torque command Tc′ supplied to the current control means of the motor, and the feedback velocity Vf.

摘要翻译： 扭矩指令Tc通过转矩限制装置被限制在转矩极限值Tm'，并传送到电动机的电流限制装置。 转矩限制值Tm'通过将由转矩极限修正值计算装置算出的转矩极限校正值DELTATm加到与目标按压力F相对应的转矩极限值Tm而导出。转矩极限校正值DELTATm根据 电机加速或减速时的加速度值。 该加速度是从速度检测器的反馈速度Vf或指令速度Vc计算的。 或者，可以从输入提供给电动机的电流控制装置的转矩指令Tc'和反馈速度Vf的观测器的输出导出。