Title:
SPEED CONTROLLING METHOD OF ACTUATOR
Document Type and Number:
Japanese Patent JPS58154017
Kind Code:
A
Abstract:
PURPOSE:To attain an accurate target speed of a traveling truck by compensating the distance traveled of a traveling truck at a fixed position by comparing the number of revolutions of wheels with the actual distance and controlling the speed of the truck. CONSTITUTION:The pulses are produced 2 for each revolution of the wheel of a track 1 to measure 3 the rotary distance, and distance signals l2 produced from a tachometer are supplied to a subtractor counter 4 and a comparison compensator 12. At the same time, the actually traveled distance L is detected 11 by >=1 limit switches 14 which are attached along the rails of the truck 1 and supplied to the compensator 12. The compensating signal l'2 is obtained from L, i.e., the signal l2 and supplied to the counter 4, and then the remainder distance l3 is obtained by performing subtraction from the distance L1 which is previously stored. Then a speed controller 5 is driven to attain a prescribed speed at a target point for the truck 1. The compensator 12 stops the truck 1 via a command device 13 when the distance between the signals l2 and L is larger than the threshold value. In such a way, the speed of the truck 1 can be accurately controlled.
Inventors:
TAKE TATSUO
Application Number:
JP3698082A
Publication Date:
September 13, 1983
Filing Date:
March 09, 1982
Export Citation:
Assignee:
FUJI DENKI SOGO KENKYUSHO KK
International Classes:
G05D13/62; B60K31/00; (IPC1-7): G05D13/62
Attorney, Agent or Firm:
Iwao Yamaguchi
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