DR. MICHAEL WESLEY HARPER, DDS
Dentist at Bell Rd, Phoenix, AZ
License number
Arizona D6113
Category
Dentist
Type
General Practice
Address
Address
4025 W Bell Rd #21, Phoenix, AZ 85053
Phone
(602) 978-2922
(602) 978-2924 (Fax)
(602) 978-2924 (Fax)
Professional information
Director Of Talent Development At Intercontinental Hotels Group
Position:
Director of Talent Development at InterContinental Hotels Group, Director of Talent Development at InterContinental Hotels Group
Location:
Phoenix, Arizona Area
Industry:
Leisure, Travel & Tourism
Work:
InterContinental Hotels Group
-
Director of Talent Development
Attorney At Walker &Amp; Harper, Pc
Position:
Attorney at Walker & Harper, PC
Location:
Phoenix, Arizona Area
Industry:
Law Practice
Work:
Walker & Harper, PC
-
Attorney
Dr. Michael W Harper, Phoenix AZ - DDS (Doctor of Dental Surgery)
Specialties:
Dentistry
Address:
4025 W Bell Rd STE 21, Phoenix 85053
(602) 978-2922 (Phone), (602) 978-2924 (Fax)
(602) 978-2922 (Phone), (602) 978-2924 (Fax)
Languages:
English
Actuator Positioning Apparatus
US Patent:
5132602, Jul 21, 1992
Filed:
Oct 2, 1990
Appl. No.:
7/594859
Inventors:
Gary C. Jorgensen - Phoenix AZ
Michael D. Harper - Phoenix AZ
Michael D. Harper - Phoenix AZ
Assignee:
Calsonic International, Inc. - Irvine CA
International Classification:
G05B 102
US Classification:
318608
Abstract:
A method and apparatus for accurately and reliably positioning an actuator arm (12) is disclosed. The actuator arm (12) is driven by a conventional DC motor (38). The conductors which supply current to the motor (38) serve as primary windings (60) of a current transformer (58). The signal induced on secondary windings (62) of the transformer (58) responds to fluctuations in average current flowing in the motor (38). These fluctuations are amplified (64) and filtered (66) so that an AC burst (68) is produced in response to each commutation of the motor (38). The AC burst (68) triggers a one-shot timing circuit (72), which generates a pulse that remains active until the AC burst (68) has decayed. The pulse disappears prior to a subsequent commutation of the motor (38). Thus, one pulse is generated for each commutation of motor (38).