Title:
CONTROL METHOD FOR SAMPLING
Document Type and Number:
Japanese Patent JPS56101209
Kind Code:
A
Abstract:
PURPOSE:To reduce the load of a control computer, by making sampling in synchronizing with the power supply at the system start and taking the sampling time longer. CONSTITUTION:When a switch SW1 is closed to start the system, the timer t1' is started and the frequency of the power supply 8 is detected from the power supply sychronizing detector 13 to form the sampling period Ts1 at the clock generating circuit and the period is given to the computer 2. The computer 2 detects a current flowing to a load 10 at the period Ts1 to correct the deviation with the control command from the command set circuit 3. This control command controls the trigger angle of a thrysitor converter 9. When the leading of the system is finished, the timer t1' is opened, the switch SW2 is closed, and the pulse in the period Ts2 from the pulse generator 15 is given to the computer 2 as the sampling period.
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Inventors:
SUZUKI SHIYOUJI
KAMIYAMA KENZOU
KAMIYAMA KENZOU
Application Number:
JP396180A
Publication Date:
August 13, 1981
Filing Date:
January 17, 1980
Export Citation:
Assignee:
HITACHI LTD
HITACHI ENG CO LTD
HITACHI ENG CO LTD
International Classes:
G06F3/05; G05B15/02; G05B21/02; H02H3/02; (IPC1-7): G05B21/02; G06F3/05; H02H3/02
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