Matsushita Electric Industrial Co., Ltd.

Hirotaka Mega

Saburo Kubota

Yasuhiro Kametani

A double spindle synchronous driving apparatus for synchronously driving first and second spindles, including: first and second motors for driving the first and second spindles, respectively; first and second rotational detection members for detecting rotational positions of the first and second motors so as to output first and second detection signals, respectively; first and second deviation counters which outputs first and second deviation signals in response to a position command signal and the first detection signal and in response to the position command signal and the second detection signal, respectively; a correction member which formulates first and second correction signals for the first and second deviation signals, respectively in accordance with a difference between the first and second deviation signals by fuzzy inference; first and second arithmetic members for performing arithmetic operation of the first deviation signal and the first correction signal and of the second deviation signal and the second correction signal so as to output first and second control signals, respectively; and first and second drive members for driving the first and second motors on the basis of the first and second control signals, respectively.

Double spindle synchronous driving apparatus

A bi-axial synchronous driving apparatus which includes: a set of motors for respectively driving two axes; rotation detecting devices for detecting rotational positions of the respective motors; a set of deviation counters to which a common position instruction signal and detection signals of the respective rotation detecting devices are applied; a correcting unit to which deviation signals outputted from the respective deviation counters are applied, so as to form correction signals with respect to the respective deviation signals based on an integration of a difference between each one of the deviation signals and the other corresponding deviation signal; a set of adding devices for adding the deviation signals outputted from the respective deviation counters to the correction signals; and a set of driving devices for driving the respective motors based on control signals outputted from said respective adding devices.

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Kadoma, Japan

Hirotaka Mega