Device for the transmission of electrical power signals to a rot

Details Device for the transmission of electrical power signals to a rot Device for the transmission of electrical power signals to a rot

1994-07-28

1995-09-19

Martin, David S.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318503, 318521, 318811, H02P 528

Patent

active

054518563

ABSTRACT:
A device for the transmission of electrical power signals of variable frequencies and phases from a stationary assembly to a rotary assembly wherein the primary winding of a rotary transformer is supplied by an electrical power source of fixed frequency, and the power output from the secondary winding of the transformer is supplied to a chopping feed of a signal generating system including a digital memory storing a digital signal having the desired characteristics of the signal to be generated, a digital-to-analogue converter for receiving the digital signal from the memory under the control of a clock pulse generator, and an amplifier connected to the converter to give the desired power to the analogue signal received from the converter.

REFERENCES:
patent: 4527120 (1985-07-01), Kurosawa
patent: 4529922 (1985-07-01), Ono
patent: 4604575 (1986-08-01), Shimiza et al.
patent: 4962331 (1990-10-01), Smith
A New Approach to Power Supplies for Robots--IEEE Transactions on Industry Applications 27(1991) Sep./Oct., No. 5, New York pp. 872-875.
Research Disclosure, Mar. 1992, No. 335, Emsworth, GB--Rotary Transformer Power and Data Transfer, p. 165.
Patent Abstracts of Japan, Nov. 16, 1985, vol. 10, No. 87, Inventor: Sugi Tokio--Signal Transmitting Device from Rotary Body.

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