Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1996-04-17
1998-03-17
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
212273, 212276, 356 306, G01B 1126, G01C 300, B66C 1306
Patent
active
057293392
ABSTRACT:
A swing angle measuring apparatus generates feedback signals for closed loop regulation of a load swinging motion in operation of a crane. The swing angle measuring apparatus measures two-dimensional swing angles, and includes a rope fixed to a hoisting device, two laser displacement sensors, laser reflecting plates, and a rectangular box attached to a hoisting device. Two steel reflecting plates are installed on the periphery of the fixed rope. Two laser displacement sensors are installed in a rectangular box such that the heading of the sensors are configured to perpendicularly intersect the faces of the laser reflecting plates. The configuration of the displacement sensors and the reflecting plates can be reversed. The rectangular box is attached to the hoisting device, and the laser reflecting plates are placed at an offset distance away from the face of the laser displacement sensors, at which a sensor signal of 0 volts is obtained. The swing angle of the rope or cable is determined from the distance between the laser displacement sensors and the laser reflecting plates.
REFERENCES:
patent: 3826380 (1974-07-01), Lenander et al.
patent: 4471877 (1984-09-01), Whitly
patent: 4969745 (1990-11-01), Ibe
patent: 5112126 (1992-05-01), Graebner
patent: 5127533 (1992-07-01), Virkkunen
patent: 5491549 (1996-02-01), Wichner
patent: 5550733 (1996-08-01), Yun et al.
"Automatic Control of an Overhead Crane", Ohnishi et al, Computer Systems Development Dept., Fukuyama Works, Nippon Kokan Kabushiki Kaisha, pp. XIV-37-XIV-42.
Automatica, vol. 23, No. 4, pp. 437-447, "Time Optimal Control of Overhead Cranes with Hoisting of the Load", Auernig et al, 1987.
Keyence, LB-70/LB-11, LB-72/LB-12, Laser Displacement Sensor Instruction Manual, pp. 2-17.
Lee Jae-Sol
Park Byung-Suk
Park Hyun-Soo
Yoon Ji-Sup
Buczinski Stephen C.
Korea Atomic Energy Research Institute
LandOfFree
Swing angle measuring apparatus for swing free operation of cran does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Swing angle measuring apparatus for swing free operation of cran, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swing angle measuring apparatus for swing free operation of cran will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-962838