Exciting-resolving integrated device of sine-cosine resolver

Abstract

The invention discloses an exciting-resolving integrated device of a sine-cosine resolver, wherein an ARM processor outputs square wave to an isolating circuit, the output of the isolating circuit is connected to a filter circuit, the output of the filter circuit is connected to a voltage-controlled constant current source, the output of the voltage-controlled constant current source outputs an amplified sine / cosine alternating-current signal as an excitation signal which is connected to the primary side of the resolver to drive the resolver to work, and then the secondary side of the resolver is enabled to output an alternating-current voltage signal for measuring an axial angle; the head end of the secondary side of the resolver is connected with an A / D conversion chip, the data bus, the chip selection wire and the control wire of the A / D conversion chip are connected with the ARM processor, the ARM processor controls the A / D conversion chip to perform sampling and analogue-digital conversion on the secondary side signal of the resolver and to resolve the axial angle according to a conversion value, and finally, a resolving result is sent to a client through a communication port. The exciting-resolving integrated device of the sine-cosine resolver is low in cost, small in volume, high in integration level, low in power consumption, high in maintainability and high in adaptability.

Description

technical field [0001] The invention relates to an excitation and resolution device for a resolver, in particular to an integrated excitation and resolution device for a sine-cosine resolver, which is suitable for a shaft angle measurement system based on a resolver and belongs to the technical field of resolver applications. Background technique [0002] As a precision angle measuring tool, the sine-cosine resolver (resolver for short) has been widely used in the modern industrial system and national defense system for a long time. At present, most of the occasions using resolvers adopt the mode of "custom excitation module for driving and special signal processing module for calculation" to construct the shaft angle measurement device. The advantages of this multi-module construction scheme are convenient design and short development cycle. The disadvantages are high overall cost, complex hardware structure, and engineering practice also reflects that the adaptability of s...

AI Technical Summary

Problems solved by technology

The advantage of this multi-module construction scheme is that it is easy to design and the development cycle is short. The disadvantage is that the overall cost is high, the hardware structure is complex, and engineering practice also reflects that the adaptability of special modules is poor.

For example, the dedicated modules are divided into two types: single-channel bipolar resolver calculation and dual-channel multi-pole resolver calculation, which are incompatible with each other; especially the multi-pole resolver calculation module has high requirements on the electrical characteristics of the resolver, so that based on The adaptability of the angle measuring device designed by the special module becomes poor, and the cost increases

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