The Study of Mechanical Arm and Intelligent Robot

Abstract

As an important part of the automation industrial system, the mechanical arm robot plays an important role in service, exploration, automation engineering and other fields, and has broad application prospects. The traditional mechanical arm and Sobel edge detection methods have some shortcomings: 1. The PID method is separated from the ontology model and only carries out simple and multiple calculations according to the code of the steering engine, which is not stable enough and will take more time; 2. In some complex environments, while Sobel edge detection detects the shape of objects, the separation between the subject and background is not clear, making it impossible to obtain accurate object information. Therefore, this paper proposes a new PID method and Canny edge detection algorithm: 1. The PID method combined with three-dimensional coordinate system modeling, achieves a more stable, faster and more robust calculation formula, to complete the mechanical arm grasping function; 2. Use of Canny edge detection and the three-dimensional coordinate system to analyze the object image to obtain accurate information about the target object.

A Study of the Vibration Characteristics of Flexible Mechanical Arms for Pipe String Transportation in Oilfields

“…It can be seen that the displacement and driving torque curves of the flexible arm with different-sized strings presented only slight differences. The results of the 2 1 2 and 2 7 8 inch strings were the most similar. Specifically, the impact on the flexible arm inevitably increased as the string size increased.…”

“…In this simulation, arm 3 and block 3 were selected. We adopted strings of 2 1 2 , 2 7 8 , and 4 1 2 inches with 15 s of lifting time and the trapezoidal curve drive to investigate their effect on the lifting characteristics. The displacement and driving torque distributions for different sizes of string clamped the mechanical arm are shown in Figures 18 and 19, respectively.…”

“…The characteristics of this kind of equipment are a large work scope and harsh environment. Because the length of the large arm is related to the derrick, the elastic deformation, vibration, and parameters of the arm in the "flexible macro-rigid micro" system [1,2] during the rotation operation will affect the movement accuracy, response speed, controllability, etc., which is the core issue of pipe string moving devices [3][4][5].…”

Super-linear speedup for real-time condition monitoring using image processing and drones

“…In computer vision-based applications, canny edge detection is used to extract useful structural information from different objects which reduces the amount of data to be processed [14], and a canny detector is used to get the accurate information of the target object [15]. In this paper, a canny edge detector is used where the input image is converted to a binary image.…”

“…The threshold would be more difficult due to the low contrast problem, it is solved by the pre-processing processes by Gaussian filter and histogram equalization for the input images. After image pre-processing, setting the value of the highest pixel is done using (15). The ( 16) is used to determine where the neighboring pixels are linked to the hot pixel, assigning them as seed pixels 𝑆 𝑃 , or to the background pixels 𝐵 𝑃 .…”