Frequency signal shaping and isolating device of generator
A frequency signal, isolation device technology, applied in the direction of conversion equipment such as intermediate conversion to DC conversion, can solve the problem that the area and height cannot meet the needs of the miniaturization of the engine, and achieve simplified circuit design, good sinusoidal signal shaping and conversion. Effect
Active Publication Date: 2016-10-19
BEIJING AUTOMATION CONTROL EQUIP INST
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The traditional transformer isolation and filtering method cannot meet the needs of engine miniaturization in terms of area and height
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0018] like figure 1 As shown, a generator frequency signal shaping and isolation device provided by the present invention includes a half-wave rectification circuit 1 , an amplitude attenuation + filter shaping circuit 2 , a photoelectric isolation circuit 3 and a power conversion circuit 4 . The output end of the half-wave rectification circuit 1 is connected to the a input end of the amplitude attenuation + filter shaping circuit 2; the output end of the amplitude attenuation + filter shaping circuit 2 is connected to the d input end of the photoelectric isolation circuit 3 to provide a relative generator output sinusoidal frequency The TTL signal d of the signal -; the output terminal of the power conversion circuit 4 is respectively connected with the c input terminal of the amplitude attenuation + filter shaping circuit 2, and the c inpu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a frequency signal shaping and isolating device of a generator, and belongs to the field of aircraft engine control. The frequency signal shaping and isolating device comprises a half-wave rectification circuit, an amplitude attenuation plus filtering shaping circuit, a photoelectric isolation circuit and a power transformation circuit; the output end of the half-wave rectification circuit is connected with the input end a of the amplitude attenuation plus filtering shaping circuit; the output end of the power transformation circuit is connected with the input end c of the amplitude attenuation plus filtering shaping circuit and the input end c of the photoelectric isolation circuit; a sine frequency signal + output by the generator is connected with the input end a of the half-wave rectification circuit; a sine frequency signal - output by the generator is connected with the input end b of the amplitude attenuation plus filtering shaping circuit and the input end b of the power transformation circuit; and the photoelectric isolation circuit outputs a TTL signal relative to a processor power supply position to the outside. According to the invention, good sine signal shaping and transformation effects are achieved via simplified circuit design within a smaller circuit area.
Description
technical field [0001] The invention belongs to the field of aircraft engine control, in particular to a generator frequency signal shaping and isolation device. Background technique [0002] The speed of engine speed plays an important role in aircraft control, and the accuracy of engine speed measurement is directly related to the accuracy of system control and the quality of system safety performance. In a certain project, the engine and the generator are installed coaxially, and the engine shaft drives the generator to rotate. The AC voltage signal output by the generator contains frequency information that changes with the engine speed. Therefore, it can be realized by measuring the frequency of the generator AC voltage signal. Measurement of engine speed. [0003] The output frequency signal of the generator is composed of signal + and signal -, and signal + relative to signal - is a zero-crossing sine wave. The frequency range is 0~5kHz, and the voltage amplitude ch...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/44
Inventor 袁寰罗延明赵振涌赵浩王宁李婷婷
Owner BEIJING AUTOMATION CONTROL EQUIP INST