发明名称 |
Method for calculating speed estimated value in speed control system. |
摘要 |
A method for calculating a speed estimated value in a speed control system, comprises the steps of: (a) storing the number of speed detection pulses obtained at each interval of a speed control process and time that the speed detection pulse was obtained; (b) calculating a detection speed from the number of latest speed detection pulses and its detection time, and the number of the previously stored speed detection pulses and its detection time; (c) executing an averaging process of motor model output corresponding to time that the detection speed was obtained; (d) obtaining a difference between an output obtained at said step (c) and the detection speed; (e) executing a calculation of a load torque estimation by multiplying the difference of the step (d) by an observer gain; (f) executing an estimation of a motor speed for next processing from the difference of the step (d) and a difference between the detection speed and the motor model output; (g) calculating an output of a speed amplifier by constituting the speed amplifier by a proportion element and from a speed estimated value obtained in the step (f); (h) obtaining a torque command by summing the speed amplifier and the load torque estimated value; and (i) outputting the torque command of the step (h) at a start point of the next speed control interval. Therefore, an output time of the torque command becomes clear, and the estimated value of the motor speed at a correct time can be obtained. <IMAGE> |
申请公布号 |
EP0670626(A3) |
申请公布日期 |
1997.12.17 |
申请号 |
EP19950102994 |
申请日期 |
1995.03.02 |
申请人 |
KABUSHIKI KAISHA MEIDENSHA |
发明人 |
YOSHIDA, YASUHIRO;YAMAMOTO, YASUHIRO |
分类号 |
H02P29/00;G01P3/489;H02P23/00 |
主分类号 |
H02P29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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