摘要：
Precision location technology is one of basic technologies to realize the farmland working machine automatic driving and prescription agriculture; it is an important content of modern intelligent agricultural machinery research. In order to study a low-cost and high-precision location system which can be applied in the small machine worked in the south paddy field, the study proposed a double laser sources location technology. With the known distance between two laser emitter, the dynamic emission angle of laser emitter can be acquired and the location coordinate of the moving machine can be accumulated. Then the real-time coordinate information and moving attitude also can be obtained. It lays a foundation for unmanned working machine and data acquisition from fixed-point in the paddy field. First, the principle of laser location was introduced in the paper, and it focused on the design of mechanical structure and controlling unit. Then, the automatic tracking and location experiment was carried when the system was fixed on the rice transplanter. And the experiment shows, the distance shifting of tracking curve is less than 7cm in the measurement of 100m, and the advantage of the high precision, low cost and high portability is very suitable for the location requirement of south farmland working machine.
作者机构：
[蒋蘋; 罗亚辉; 胡文武; 吴畏] College of Engineering, Hunan Agricultural University, Changsha 410128, China;[蒋蘋; 罗亚辉] Hunan Provincial Engineering Technology Research Center for Modern Agricultural Equipment, Changsha 410128, China
通讯机构：
College of Engineering, Hunan Agricultural University, China
通讯机构：
[Jiang, Ping] C;Cent S Univ, Coll Mech & Elect Engn, Changsha 410083, Peoples R China.
关键词：
INERTIAL SENSOR;LASER;LOCALIZATION;MOBILE STATION
摘要：
To realize the precise localization of the working machinery in the paddy field, a 3-point laser localization system has been designed based on the experiments of Inertial Localization. This system is composed of the base station with the fixed distance and the moving station fixed on the carrier. The base stations mainly control the laser emission device to trace the corresponding laser receiving device, while the mobile station mainly collects the data of the sensors and calculates the position coordination. The experiment shows that the localization error is less than 10 cm on the test range of 50 meters, and the system is reliable localization.
关键词：
construction machine;multi-Agent technology;fuzzy;fault diagnosis
摘要：
The number of construction machinery faults is too much and its diagnosis are fuzzy and complex. We construct the fault hierarchy model by the means of hierarchy analysis and obtain all kinds of Possibility degree of faults factors through the triangular fuzzy complementary judgment matrix. Take the fault diagnosis of diesel engine fuel system, this paper establish intelligent fault diagnosis system, which has the ability of self-learning and self-correction using multi-agent technology.
作者机构：
[谢方平; 孙松林; 胡文武; 蒋蘋; 罗亚辉] College of Engineering, Hunan Agricultural University, Changsha 410128, China;[蒋蘋] College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
通讯机构：
College of Engineering, Hunan Agricultural University, China
