Hunan Sany Intelligent Control Equipment Co., Ltd.

Sany Heavy Industry Co., Ltd.

Xiang Zhou

Xiaogang Yi

Antao Chen

Xianli Cao

Qiulian Deng

A control method of a mechanical articulated arm, wherein at least two tilt sensors are arranged in different positions of the articulated arm, comprising: calibrating zero positions of tilt sensors when articulated arm does not have elastic deformation, setting position of tail end of articulated arm as point P and point P' before and after elastic deformation of articulated arm, and selecting point R on the articulated arm; detecting angles of two different positions of the articulated arm with the tilt angles before and after the elastic deformation, obtaining the angle offset &#x394;&#x3b8; of the articulated arm due to the elastic deformation, and calculating the length parameter Land the angle parameter &#x3b8;of the articulated arm after deformation based on the lengths of OR and RP&#x2032;; and controlling the action of the articulated arm according to position parameters X&#x2032; and Y&#x2032; (to the point P&#x2032;) obtained according to length parameter Land angle parameter &#x3b8;.

Method and device for controlling mechanical articulated arm

A character parameters obtaining method for a displacement control mechanism of a hydraulic pump and a detecting device for carrying out the method are disclosed. The method involves constructing a hydraulic system; outputting hydraulic energy by the hydraulic pump driven by a primary motor; detecting pressure of a displacement control mechanism; obtaining middle parameters by obtaining the time required for preset change of the pressure at the output end of the displacement control mechanism; obtaining character parameters of the displacement control mechanism according to the middle parameters. The method can obtain the character parameters of the displacement control mechanism by the pressure detection, so that the performance of the displacement control mechanism can be judged according to the obtained character parameters. The method avoids the need of obtaining the output flow of the hydraulic pump so as to eliminate the problem caused by using a flow meter or using an obliquity sensor to obtain the character parameters.

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Changsha, China

Xiang Zhou