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Digitalization method for angle signal

An angle signal and angle technology, applied in the direction of speed/acceleration/shock measurement, measuring devices, instruments, etc., can solve the problems of slow dynamic response and low precision, and achieve the effect of high dynamic response, high precision and good impedance characteristics

Active Publication Date: 2018-06-01
WUHAN AVIATION INSTR
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Problems solved by technology

[0003] Purpose of the invention: To provide a digital method for the angle-of-attack angle signal of the multi-function probe sensor, which is used to solve the problems of slow dynamic response and low precision when the multi-function probe sensor obtains the digital angle of attack from the flight control system

Method used

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  • Digitalization method for angle signal
  • Digitalization method for angle signal

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Embodiment Construction

[0014] The present invention will be described in further detail below.

[0015] refer to Figure 1 ~ Figure 2 . The digitization method of the angle signal of the present invention adopts a solving circuit, and the circuit includes a rotary transformer, an isolation circuit, a subtraction circuit, a rectification filter circuit, and an A / D converter. The signal is converted into an electrical signal, and the resolver and the isolation circuit are connected by wires, the isolation circuit, the subtraction circuit, the rectification filter circuit, and the A / D converter are integrated on the printed circuit board, and the AC voltage signal output by the resolver is converted into a digital signal , the angle calculation algorithm solves the digital angle through the pre-calibrated data table and interpolation algorithm.

[0016] The principle realized by this method is: the rotary transformer converts the angle signal into electrical signals H, CT, L, and connects them to the...

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Abstract

The invention belongs to an angle signal solving technology, in particular relates to a digitalization method for an angle signal of an attack angle of a multifunctional probe sensor. The multifunctional probe sensor needs to introduce a digitalized attack angle signal when correcting static pressure, and the attack signal is obtained by means of an atmospheric data computer via a bus, thus, the dynamic response and precision of the attack angle are affected. The digitalization method adopts a solving circuit, establishes a relational data table of Pratio and a digital quantity angle in a controller DSP in advance, calculates the Pratio by means of the controller DSP for a received rotation angle, and checks the table to determine the corresponding digital quantity angle. The digitalization method is simple in implementation, high in dynamic response to angle signals and high in digitization precision, and is suitable for being used in integrated and highly-digitalized angle sensors.

Description

technical field [0001] The invention belongs to the angle signal calculation technology, in particular to a digital method for the angle signal of the angle of attack of a multifunctional probe sensor. Background technique [0002] The multi-function probe sensor provides the aircraft with atmospheric parameters such as angle of attack, total pressure, static pressure, etc., and the analog signal of the angle of attack signal is provided to the flight control system. After the flight control system digitizes the analog signal of the angle of attack signal, it sends it to the atmospheric data through the bus Computer; when the static pressure is corrected, the multi-function probe sensor needs to introduce the digitized angle of attack signal, which is obtained from the air data computer through the bus. In this way, the dynamic response and accuracy of the angle of attack are affected. Contents of the invention [0003] Purpose of the invention: To provide a digital method...

Claims

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Application Information

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IPC IPC(8): G01P13/02
CPCG01P13/025
Inventor 李根马民
Owner WUHAN AVIATION INSTR
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