Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1996-09-20
1998-10-13
Dougherty, Thomas M.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310328, H02N 200
Patent
active
058216669
ABSTRACT:
Control units U.sub.i-1, U.sub.i and U.sub.i+1, each having a piezoelectric actuator 3, are aligned on a resilient substrate 1 at predetermined intervals, so as to constitute a united control system. An actuator controller, formed on a circuit substrate 4 of control unit U.sub.i, receives target displacements of neighboring other control units U.sub.i-1 and U.sub.i+1. Then, using a discrete difference equation derived from the partial differential equation describing the distributed parameter system model of the united control system, the displacement amount of control unit U.sub.i can be determined based on the target displacement of the control unit U.sub.i and the target displacements of the neighboring other control units U.sub.i-1 and U.sub.i+1 thereby driving piezoelectric actuator 3 smoothly.
REFERENCES:
patent: 3947708 (1976-03-01), Fulenwider
patent: 4849668 (1989-07-01), Crawley et al.
patent: 4928030 (1990-05-01), Culp
patent: 4953413 (1990-09-01), Iwata et al.
patent: 5043621 (1991-08-01), Culp
patent: 5237236 (1993-08-01), Culp
patent: 5257669 (1993-11-01), Kerley et al.
patent: 5268621 (1993-12-01), Hamers et al.
patent: 5281899 (1994-01-01), Culp
patent: 5337732 (1994-08-01), Grundfest et al.
patent: 5525853 (1996-06-01), Nye et al.
patent: 5585956 (1996-12-01), Lee et al.
Mizukami,et al: "Cooperation Control of Uniformly Distributed Actuators using Gradient of State Function", 9th Annual Conference Of The Robotics Society Of Japan, pp. 29-30, No. 27-29, 1991.
Hirose et al: "Study of Articulated Body Mobile Robot Koryu", 9th Annual Conference Of The Robotics Society Of Japan, pp. 311-312, Nov. 27-29, 1991.
Murakami et al: A Control of Multi-degree-of-Freedom System by Millimachine Technology I, Precision Engineering Institute Report, vol. 60, No. 3, 1994, pp. 352-357.
Idogaki Takaharu
Kaneko Takahisa
Matsumoto Naoki
Ogusu Koji
Otsuka Manabu
Dougherty Thomas M.
Nippondenso Co. Ltd.
LandOfFree
United control system comprising a plurality of control units in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with United control system comprising a plurality of control units in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and United control system comprising a plurality of control units in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-315937