Servo motor with a built-in drive circuit

Details Servo motor with a built-in drive circuit Servo motor with a built-in drive circuit

2006-05-09

2006-05-09

Duda, Rina (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

C318S560000, C318S638000, C318S650000, C318S132000, C318S434000

Reexamination Certificate

active

07042188

ABSTRACT:
A servo motor with a built-in drive circuit is provided in which, when power is off, positional data including multiple-rotation counting values is stored in a nonvolatile memory to thereby eliminate battery back-up, and in which the CPU of a drive control circuit portion is in charge of the multiple-rotation counting itself to thereby eliminate the circuit for multiple-rotation counting. Due to a reduction in the number of lines involved and an elimination of battery back-up, a reduction in size is achieved. The servo motor with a built-in drive circuit includes an absolute encoder for detecting rotation of a servo motor portion and an electromagnetic mechanical brake, in which, when the power is off, the positional data at that time is stored in a nonvolatile memory.

REFERENCES:
patent: 2906983 (1959-09-01), Jenney
patent: 4350941 (1982-09-01), McClure et al.
patent: 5327055 (1994-07-01), Danielson et al.
patent: 5384069 (1995-01-01), Yoshinaga et al.
patent: 5912541 (1999-06-01), Bigler et al.
patent: 6445154 (2002-09-01), Toyozawa et al.
patent: 01-292505 (1989-11-01), None
patent: 04-210753 (1992-07-01), None
patent: 07-039190 (1995-02-01), None
patent: 2002-136057 (2002-05-01), None
patent: 2003-052148 (2003-02-01), None
Laplante, P (Editior-in-Chief)., “Comprehensive Dictionary of Electrical Engineering”, 1999, CRC Press, IEEE Press, p. 441.

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