SERVO CONTROL METHOD

WIPO Patent Application WO/2002/025390

A1

Flexible structures with two ore more inertia systems connected through spring elements have heretofore presented problems that instructions and loads do not in perfect accord and that complicated calculations required involve an enormous amount of calculation. A servo control method using feedforward is characterized by comprising the steps of expressing the position of a load and the position of a motor in respective functions capable of higher order differentiation, determining such functions capable of higher order differentiation from operating conditions (4) and mechanical parameters (5), calculating the motor position, speed and torque instruction from the determined functions capable of higher order differentiation, and using the calculated motor position, speed and torque instruction as feedforward instructions or of calculating a motor torque instruction from the determined function capable of higher order differentiation, inputting the calculated torque instruction into a mechanical model, and using the obtained motor position, speed and torque instruction as feedforward instructions.

JPH0612492	INDUSTRIAL APPLICABILITY: Method for controlling flow rate of liquid supply system
JP4192393	air conditioner
JPH0744863	[Title of Invention] Electric motor control device

HAGIHARA JUN (JP)
IMAZU ATSUSHI (JP)
YASUDA KEN ICHI (JP)
OGURO RYUICHI (JP)

PCT/JP2001/007851

March 28, 2002

September 10, 2001

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YASKAWA DENKI SEISAKUSHO KK (JP)
HAGIHARA JUN (JP)
IMAZU ATSUSHI (JP)
YASUDA KEN ICHI (JP)
OGURO RYUICHI (JP)

G05B11/32; B25J9/10; G05B19/19; G05D3/12; H02P29/00; (IPC1-7): G05D3/12

JP2000148210A	2000-05-26
JPH11309646A	1999-11-09
JP2000172341A	2000-06-23
JPH11265202A	1999-09-28

See also references of EP 1338937A4

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