Decoder and decoding method for two speed resolver

Abstract

The invention discloses a decoder for a two speed resolver. The decoder for the two speed resolver comprises an excitation source, an analog-digital converter, a multiplier, a differentiator, a phase sensitive demodulator, an integrator, a control circuit and an operational circuit. The excitation source is connected with the two speed resolver and the phase sensitive demodulator respectively. The two speed resolver, the analog-digital converter multiplier, the differentiator, the phase sensitive demodulator and the integrator are connected in sequence. The control circuit is connected with the integrator and the operational circuit respectively. The operational circuit is connected with the multiplier, and the operational circuit further comprises a processor. The invention discloses a decoding method for a two speed resolver, the output signal of the two speed resolver is input into the processor of the operational circuit to carry out integration and operation after being operated through decoder hardware, and angle information after being integrated is output. The decoder and the decoding method for the two speed resolver combine software and hardware, and can directly calculate the angle information of the two speed resolver, and is fast in decoding speed, high in precision, capable of adapting harsh environmental conditions, and high in reliability.

Description

technical field [0001] The invention relates to a decoder, in particular to a decoder for a dual-channel resolver and a decoding method thereof. Background technique [0002] The resolver is an electromagnetic induction sensor, which is used to measure the position, angle and speed of objects in the field of servo control. The dual-channel resolver contains two-phase windings of coarse machine and fine machine, and is usually used in high-precision detection systems, such as detection systems in the fields of ships, weapons, water conservancy, and electric power. Converting the physical signal of the dual-channel resolver into readable detection information requires decoding. At present, the decoding technology of the dual-channel resolver mainly includes software decoding and hardware decoding. However, both the software decoding method and the hardware decoding method have certain problems. Software decoding methods mainly include calling arctangent function method and t...

AI Technical Summary

Problems solved by technology

The decoding speed of the hardware decoding method is fast, but the algorithm is complicated and difficult to understand, which makes the design and use of the decoder more difficult

Moreover, the existing dual-channel resolver software decoding method and hardware decoding method are designed for ground test equipment and systems, and cannot adapt to harsh environmental conditions such as weightlessness, high radiation, low air pressure, and thermal vacuum, such as the use of space microwave radar environmental needs

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