Title:
NUMERICAL CONTROLLER
Document Type and Number:
Japanese Patent JPH03290706
Kind Code:
A
Abstract:
PURPOSE:To obtain the optimum gain and the optimum parameter of each compensation in order to secure the highly accurate and stable position control of a machine movable part at a high speed by showing the dynamic characteristic of the movable part in the form of a model of a spring mass system. CONSTITUTION:A storage part 5 samples and stores the velocity of a movable part, the acceleration of the movable part, and the motor current feedback value received from a velocity detector 106, an acceleration detecting part 4, and a current detector 104 respectively at the prescribed time. A calculation part 6 reads those velocity, acceleration and feedback value out of the part 5 and calculates the mass, the viscous frictional coefficient, and the Coulomb frictional force of the movable part. Then a storage part 7 stores these results of calculation obtained by the part 6. Thus it is possible to obtain the mass, the viscous frictional coefficient, and the Coulomn frictional force of the movable part which are necessary for attaining the highly accurate correction in a high speed machining state.
Inventors:
TEJIMA TAKEO
Application Number:
JP9354790A
Publication Date:
December 20, 1991
Filing Date:
April 09, 1990
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05B19/18; G05B13/02; G05B19/19; G05B19/404; G05B19/4063; G05D3/12; (IPC1-7): G05B13/02; G05B19/18; G05B19/19; G05D3/12
Domestic Patent References:
| JPS6444510A | 1989-02-16 | |||
| JPS59612A | 1984-01-05 | |||
| JPH0276692A | 1990-03-16 | |||
| JPS6474085A | 1989-03-20 |
Attorney, Agent or Firm:
Kaneo Miyata (3 outside)