Unmanned aerial vehicle, engine, control device and missing tooth recognition method

Abstract

The invention discloses an unmanned aerial vehicle, an engine, a control device and a missing tooth recognition method. The missing tooth recognition method is applied to the control device, and the control device comprises a controller, a fluted disc is driven by the engine to rotate, the fluted disc is provided with teeth and missing teeth, a detection point is arranged in the circumferential direction of the fluted disc, a sensor is installed on the detection point, the sensor is connected with the controller, and the missing tooth recognition method comprises the steps of S1, collecting rotation information of the fluted disc; S2, identifying a plurality of pieces of position information of the missing teeth according to the rotation information; and S3, judging effective missing teeth and invalid missing teeth in the pieces of position information. According to the missing tooth recognition method, the situation that the engine cannot be started due to the fact that missing teeth cannot be recognized and missing teeth are wrong is avoided by accurately recognizing the effective missing teeth and the invalid missing teeth under the conditions of discontinuous operation and even springback, the starting difficulty of the engine is lowered, the starting inertia of the engine is reduced, and the anti-interference capacity of the engine is improved.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a tooth-missing identification method. It also relates to a control device. An engine is also involved. A drone is also involved. Background technique [0002] In the field of piston engines, the engine appears discontinuous at the moment of starting (the speed fluctuates up and down in a single circle), and even rebounds (the top dead center cannot be passed at one time, and the three-phase motor needs to be run again to pass), resulting in ECU (Electronic Control Unit) ) cannot effectively identify the missing tooth signal, and it is more difficult to form an effective ignition on the ignition, and it is difficult to start the engine. [0003] For the tooth-missing signal recognition method in the prior art, there are usually methods for judging adjacent teeth and acceleration. These methods are all based on the relationship between adjacent teeth to det...

AI Technical Summary

Problems solved by technology

These methods are all based on the relationship between adjacent teeth to determine the missing teeth, which can be used reasonably and effectively solve the problem under continuous operation, but especially for discontinuous operation or even springback during startup. In the case of high compression ratio and small inertia, it will exceed the calculation ability of the above identification methods, resulting in difficulty in identifying missing teeth, and even the situation that missing teeth cannot be identified and errors may occur, making the engine unable to start

[0004] Therefore, how to provide a method for identifying missing teeth that solves the problem of identifying missing teeth under the condition of discontinuous operation or even rebound is a technical problem urgently needed by those skilled in the art.

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