A kind of unmanned aerial vehicle, engine, control device and missing tooth identification method

Abstract

The invention discloses an unmanned aerial vehicle, an engine, a control device and a method for identifying missing teeth. The method for identifying missing teeth is applied to the control device, and the control device includes a controller; The disk is provided with teeth and missing teeth, and detection points are set in the circumferential direction of the tooth disk, sensors are installed on the detection points, and the sensors are connected to the controller. The method for identifying missing teeth includes: S1. Rotation information of the disk; S2, identifying a plurality of position information of the missing teeth according to the rotation information; S3, judging valid missing teeth and invalid missing teeth among the plurality of position information. The above missing tooth recognition method, by accurately identifying effective missing teeth and invalid missing teeth under conditions of discontinuous operation or even springback, avoids engine failure due to unidentifiable and missing teeth errors, reduces the difficulty of starting the engine, and reduces The starting inertia of the engine is improved, and the anti-interference ability 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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