Fault detection method for resolver circuit of aero starter motor using AD2S1210 resolver decoding chip

Abstract

The invention proposes a fault detection method for a resolver circuit of an aero starter motor using an AD2S1210 resolver decoding chip. Through the combination of a resolver in the aero starter motor and the resolver decoding chip AD2S1210 inside a controller, rotor position information of the motor is obtained. When the starter motor is stationary and the resolver circuit is open or short-circuited, an ABZ pulse signal output by the resolver decoding chip AD2S1210 is used, a digital signal processor (DSP) and a field programmable gate array (FPGA) are used for performing signal acquisitionto obtain the position information; and according to the detection method that assists in detecting resolver circuit faults, in combination with a fault signal indication of the resolver decoding chip, the reliable control of the aero starter motor is completed.

Description

technical field [0001] The invention relates to the technical field of fault detection of a resolver circuit of an aviation starter motor, in particular to a fault detection method for a resolver circuit of an aviation starter motor using an AD2S1210 resolver decoding chip. Background technique [0002] At present, with the development of aviation power supply and power electronics technology, high-power aero-engines have also begun to use electric starting methods, and foreign countries have begun to use high-power brushless frequency conversion AC starting / generating systems on large civil aircraft. The starter motor is a key part of the engine's power plant, and the position detection of its rotor is very important in the control of the aviation starter motor. The technology of non-position control in the high-power starting system is not yet mature, and it is difficult to ensure the precise control of the starter motor. At present, the high-performance AC speed control ...

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Problems solved by technology

[0004] However, after the localization of the AD2S1210 resolver decoding chip, due to various reasons such as the current domestic technology, the applicant found that there is a problem in the starter motor product using the AD2S1210 resolver decoder chip: when the starter motor is in a static state, the starter motor and the control Whether the resolver circuit between the converters is normal or there is an open circuit or short circuit, the fault indication of the LOS and DOS pins of the domestically produced AD2S1210 resolver decoding chip is a fault state, which makes it impossible to simply pass through the resolver. The fault indication terminal of the decoding chip performs fault judgment and processing

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