Nitrogen and oxygen sensor control system

Abstract

The invention belongs to the field of automobile electronic sensing detection and particularly discloses a nitrogen and oxygen sensor control system. The system comprises a cascade controller, a two-way fuzzy controller, and a nitrogen and oxygen sensor suitable for a main pump, a secondary pump and a measurement pump. The cascade controller is used for stabilizing Ip1 according to Vp0 and Vp1, the fuzzy controller is used for performing decoupling control on V1 and V2 and performing real-time control on Nernst voltages of the secondary pump and the measurement pump by V1 and V2 obtained by control, wherein Vp0, Vp1 is the pump voltage of the main pump and the secondary pump, Ip1 is the pump current of the secondary pump, and V1 and V2 are the Nernst voltages of the secondary pump and themeasurement pump. According to the system, the efficient decoupling control can be performed on a complex nitrogen and oxygen sensor, and the sensor can work in a stable state for a long time. The system also has the characteristics of high stability and high anti-interference ability.

Description

technical field [0001] The invention belongs to the field of automotive electronic sensing and detection, and more specifically relates to a nitrogen and oxygen sensor control system. The time runs stably with high precision. Background technique [0002] With the rapid development of the world economy and the continuous increase of per capita income, the number of cars in various countries has continued to rise. Although the development of the automobile industry has greatly promoted the progress of human society, it has also aggravated environmental pollution and energy shortages to a large extent due to the limitation of its power source. With the promulgation of the latest emission standards of China V, China VI and Europe, traditional vehicle oxygen sensors can only complete the oxygen measurement function required by the standard, but cannot complete the detection requirements of nitrogen oxides in exhaust gas. Nitrogen oxide detection sensors have long been blocked ...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the object of the present invention is to provide a nitrogen and oxygen sensor control system, wherein by improving the internal composition and data processing method of the key details of the controller, it is different from the prior art Compared with the control problem of the nitrogen and oxygen sensor with complex three-chamber structure, this system can efficiently decouple the complex nitrogen and oxygen sensor, so that it can work in a stable state for a long time

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