ALFRED HOLT MEBANE
Pilots at Semillon Blvd, San Diego, CA
License number
California A4130673
Issued Date
Feb 2016
Expiration Date
Feb 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
12304 Semillon Blvd, San Diego, CA 92131
Professional information
Hybrid Sample Rate Servo Motor Controller
US Patent:
4893066, Jan 9, 1990
Filed:
Sep 19, 1988
Appl. No.:
7/246240
Inventors:
Lowell J. Stewart - Poway CA
Alfred H. Mebane IV - San Diego CA
Alfred H. Mebane IV - San Diego CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G05B 1929
US Classification:
318600
Abstract:
A hybrid sample rate servo motor employing rate feedback compensation is disclosed. The system employs a shaft encoder having a predetermined resolution to provide position data which are pulses indicating the shaft has moved another resolution unit. Under high motor velocity conditions the rate compensation feedback loop is operated at a conventional constant sample rate. Under low velocity conditions, the sample rate at which the rate compensation feedback loop is operated is modified so that rate samples are taken and calculated only when new position data are available from the motor encoder. Rate quantization error is substantially reduced, thereby leading to more robust controller operation.