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Patent Searching and Data


Title:
LIFT CONTROLLING APPARATUS
Document Type and Number:
Japanese Patent JP3044189
Kind Code:
B2
Abstract:

PURPOSE: To suppress excessive acceleration of a tilling apparatus and to perform smooth control of lifting motion.
CONSTITUTION: This lift controlling apparatus is provided with a positional deviation detection means A to get the deviation of the present level of a rotary tiller from an arbitrarily set target level and with a controlling level setting means C to receive the positional deviation from the positional deviation detection means, convert the deviation value to a membership value by a preset membership function, determine the control target based on the membership value and the membership function and use the control target as a value for adjusting the opening of a control valve V of a hydraulic actuator 7 to vertically move the rotary tiller to a side to decrease the positional deviation.


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Inventors:
Iida, Satoshi
Nakai, Shohei
Application Number:
JP1996000052976
Publication Date:
May 22, 2000
Filing Date:
March 11, 1996
Export Citation:
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Assignee:
KUBOTA CORP
International Classes:
A01B63/111; F15B9/08; G05B13/02; (IPC1-7): A01B63/111; F15B9/08; G05B13/02
Attorney, Agent or Firm:
北村 修一郎