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US 4,066,958 AGranted
Compensated galvanometer
AssigneeMFE Corporation
InventorEdward Burke, Jr.
Life of this patent
Estimating the term…
Abstract
A limited-displacement device is provided with an extended frequency range by critically damping it and compensating its frequency characteristics with a pair of series lead compensation circuits whose break-point frequency matches the natural frequency of the mechanical parts of the system.
Claims5
A galvanometer of the type comprising a limited displacement motor, an output element displaced by said motor in response to an input signal applied to the galvanometer, and resilient means urging said motor to a neutral position, the galvanometer having a resonant angular frequency, .omega..sub.o, said galvanometer further comprising
- A. means for essentially critically damping said motor so that the amplitude of the displacement of said output element varies with the frequency of the galvanometer input signal in essentially the same manner as the transfer function of a two-section lag circuit, and
- B. a series compensation circuit
- 1. connected to pass the galvanometer input signal to said motor,
- 2. having a double-lead characteristic, and
- 3. having a break-point angular frequency of .omega..sub.o.
2 more elements
Dependencies are inferred from the claim text.