Electronic speed governor for a turbine

Claim 2

An electronic speed governor for a turbine wherein the speed of the turbine is controllable by a pneumatically controlled valve, comprising: digital signal generating means for producing an electrical signal which is a function of the rotational speed of said turbine; means for converting said digital signal into a D. C. voltage velocity signal which is proportional to the speed of the turbine; reference generating means for generating a preselectable reference voltage signal indicative of a desired speed of said turbine; comparison means for comparing said velocity signal to said reference voltage signal and for generating an error signal indicative of the difference between said voltage velocity signal and said reference voltage signal; control signal generating means responsive to said error signal for generating a control signal; and a transducer means having a housing wherein said transducer means generates a pneumatic signal to said controlled valve in response to said control signal thereby controlling the speed of said turbine and wherein said converting means, said reference generating means, said comparison means, and said control signal means are located within said transducer housing whereby said air within said transducer housing prevents corrosion and reduces heating of said electronic elements.

Claim 3

The electronic speed governor of claim 1 wherein said control signal comprises a time integral function of said error signal.

Claim 4

The electronic speed governor of claim 1 wherein said control signal comprises a proportional function of said error signal.

Claim 5

The electronic speed governor of claim 1 wherein said control signal comprises a proportional function plus a time integral function of said error signal.

Claim 6

The electronic speed governor of claim 1 further comprising an indicator means, a portion of which is located within said transducer housing, for providing an instantaneous readout of said turbine speed.

Claim 7

The electronic speed governor of claim 1 wherein said reference voltage signal generating means comprises a means for remotely selecting said reference voltage signal.

Claim 8

An improved electronic speed governor for a turbine wherein the speed of the turbine is controlled by the output from a pneumatic transducer and wherein said pneumatic transducer includes a hollow housing, the improvement comprising: digital signal generating means associated with said turbine for producing an electrical signal which is a function of the rotational speed of said turbine; a first platform means located within said transducer housing; a means located on said first platform means for converting said digital signal into a D. C. voltage velocity signal which is proportional to the speed of the turbine; reference generating means located on said first platform means for generating a preselectable Reference voltage signal indicative of a desired speed of said turbine; comparison means located on said first platform means for comparing said velocity signal to said reference voltage signal and generating an error signal indicative of the difference between said voltage velocity signal and said reference voltage signal; and control signal generating means located on said first platform means and responsive to said error signal for generating a control signal to said transducer means whereby said transducer means in response to said control signal generates a pneumatic signal which controls the speed of said turbine.

Claim 9

An improved electronic speed governor for a turbine wherein the speed of the turbine is controlled by the output from a pneumatic transducer and wherein said pneumatic transducer includes a hollow housing, the improvement comprising: digital signal generating means associated with said turbine for producing an electrical signal which is a function of the rotational speed of said turbine; a first platform means located within said transducer housing; a means located on said first platform means for converting said digital signal into a D. C. voltage velocity signal which is proportional to the speed of the turbine; reference generating means located on said first platform means for generating a preselectable Reference voltage signal indicative of a desired speed of said turbine; comparison means located on said first platform means for comparing said velocity signal to said reference voltage signal and generating an error signal indicative of the difference between said voltage velocity signal and said reference voltage signal; and control signal generating means located on said first platform means and responsive to said error signal for generating a control signal to said transducer means whereby said transducer means in response to said control signal generates a pneumatic signal which controls the speed of said turbine.

Claim 10

The improvement of claim 7 further comprising an indicator means for providing an instantaneous readout of said turbine speed.

Claim 11

The improvement of claim 7 wherein said reference generating means comprises a means for remotely selecting said reference voltage signal.

Claim 12

The improvement of claim 8 further comprising a second platform means located within said housing wherein a portion of said indicator means is located on said second platform means.

Claim 13

The improvement of claim 9 further comprising a second platform means located within said housing wherein a portion of said means for remotely selecting said reference velocity voltage is located on said second platform means.