Brushless tachometer

Details Brushless tachometer Brushless tachometer

1983-06-14

1986-02-25

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318327, 322DIG5, 322 31, G05B 501

Patent

active

045729999

ABSTRACT:
A brushless tachometer in which output signal switching is achieved using field effect transistors and which is capable of achieving linearity over a broad range, particularly the zero speed region. According to a preferred embodiment, the brushless tachometer is operated in a current mode as part of the servo loop to substantially reduce tachometer voltage switching requirements. A ROM can be used to control commutation switching. Commutation is preferable line-to-neutral to reduce ripple.

REFERENCES:
patent: 3754175 (1973-08-01), Girault
patent: 3771036 (1973-11-01), Roggero
patent: 4017858 (1977-04-01), Kuipers
patent: 4088943 (1978-05-01), Schmidt
patent: 4103215 (1978-07-01), Naydan et al.
patent: 4364005 (1982-12-01), Kohzai et al.
patent: 4406983 (1983-09-01), Ramirez

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