Servomotor control device
First Claim
1. A servomotor control device comprising:
- a servomotor;
a driven body that is driven by way of the servomotor;
a connection mechanism. that connects the servomotor and the driven body to transmit power of the servomotor to the driven body;
a first position detection section that detects a position of the servomotor;
a second position detection section that detects a position of the driven body; and
a motor control unit that controls the servomotor,wherein the motor control unit includes;
a force estimation section that estimates a drive force acting on the driven body at a connection part between the connection mechanism and the driven body;
a rigidity estimation section. that estimates a magnitude of rigidity of the connection mechanism based on a position of the servomotor detected. by the first position detection section, a position of the driven body detected. by the second position detection section, and a drive force estimated by the drive force estimation. section; and
a rigidity variation detection section that detects a change in rigidity of the connection mechanism, based on the magnitude of rigidity estimated by the rigidity estimation section.
1 Assignment
0 Petitions
Accused Products
Abstract
A servomotor control device includes: a servomotor; a driven body that is driven by the servomotor; a connection mechanism that connects the servomotor and the driven body; a first position detection section that detects a position of the servomotor; a second position detection section that detects a position of the driven body; and a motor control unit, in which the motor control unit includes: a force estimation section that estimates a drive force acting on the driven body at a connection part between the connection mechanism and the driven body; a rigidity estimation section that estimates a magnitude of rigidity of the connection mechanism based on a detected position of the servomotor, a detected position of the driven body, and an estimated drive force; and a rigidity variation detection section that detects a change in rigidity of the connection mechanism, based on the estimated magnitude of rigidity.
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Citations
10 Claims
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1. A servomotor control device comprising:
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a servomotor; a driven body that is driven by way of the servomotor; a connection mechanism. that connects the servomotor and the driven body to transmit power of the servomotor to the driven body; a first position detection section that detects a position of the servomotor; a second position detection section that detects a position of the driven body; and a motor control unit that controls the servomotor, wherein the motor control unit includes; a force estimation section that estimates a drive force acting on the driven body at a connection part between the connection mechanism and the driven body; a rigidity estimation section. that estimates a magnitude of rigidity of the connection mechanism based on a position of the servomotor detected. by the first position detection section, a position of the driven body detected. by the second position detection section, and a drive force estimated by the drive force estimation. section; and a rigidity variation detection section that detects a change in rigidity of the connection mechanism, based on the magnitude of rigidity estimated by the rigidity estimation section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification