Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Zong, Kai; Zhang, Peng; Wang, Pengjiang; Fu, Shichen; Li, Yiming; Zhang, Minjun; Wu, Miao

doi:10.1155/2018/2387408

Cited by 8 publications

(9 citation statements)

References 20 publications

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“…As a result, in most cases, manual control is used, which is time-consuming and unreliable, and it puts workers in a high-risk environment. erefore, realizing intelligent control is an urgent issue in underground coal mines [4][5][6]. e cutting arm, which is the key cutting component of the roadheader, is driven by a hydraulic cylinder.…”

Section: Introductionmentioning

confidence: 99%

Multiparameter Control Strategy and Method for Cutting Arm of Roadheader

Wang

Yang

et al. 2021

Shock and Vibration

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A multiparameter control strategy and method for the cutting arm of a roadheader is proposed through the operation analysis of roadheader. The method can address the problems of low intelligence and low cutting efficiency faced by the roadheader in the cutting process. The control strategy is divided into two parts: the cutting load identification part and the swing speed control part. The former part is designed using a backpropagation neural network that is optimized by an improved particle swarm optimization algorithm. The latter part is optimally designed using a fuzzy PID controller with improved simulated annealing particle swarm optimization. The simulation analysis in SIMULINK showed that the response time was reduced, proving the robustness of the method. In addition, experimental studies verified the good control effect of the method under different cutting states. The proposed method uses multiparameter to intelligently change the swing speed, providing a theoretical and practical basis for the realization of intelligent and unmanned cutting of roadheader.

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Section: Introductionmentioning

confidence: 99%

Multiparameter Control Strategy and Method for Cutting Arm of Roadheader

Wang

Yang

et al. 2021

Shock and Vibration

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“…It is worth noting that, We have analyzed the body pose responses of boom-type roadheader during the horizontal cutting process [17], and the multibody large-scale displacement responses of roadheader during the vertical cutting process [18], aiming at the flat coal seams. However, concerning the steep coal seams, which are much different from the flat coal seams, theoretical model and response characteristics of roadheader's attitude are still none reported in existed literatures.…”

Section: Introductionmentioning

confidence: 99%

Modeling and response analysis of the attitude angles of roadheader for steep coal seam

Zong

2021

SN Appl. Sci.

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This study presents a dynamical model of the attitude angles of boom-type roadheader, to reveal the response characteristics of the attitude angles in steep coal seam. Based on the Lagrange equation, the dynamical model of the attitude angles of roadheader is established, then the simulation system is constructed in Simulink, to solve the dynamical model. Afterwards, a calculating method of the cutting load is proposed, to formulate the external loads of the roadheader during cutting process. Focused on the steep coal seam, of which the dip angle is 30°, the dynamical model is solved, and the solving results influenced by different factors are obtained. The results show that, the variations of roadheader's attitude are affected greatly by the cutting load, while the influence of swing angle of the cutting arm is relatively slight. Among the three attitude angles, the pitch angle varies most greatly, which can reach up to 9.1° and 8.7° during horizontal and vertical cutting process respectively. Finally, the numerical simulation results are verified by experimental data. The dynamical model and response characteristics of roadheader's attitude angle presented in this paper, can provide useful basis for prediction of roadheader's operating status and rectification of roadheader's attitude in steep coal seam. Article Highlights1. The dynamical model of roadheader's attitude is established, to accurately describe dynamic behaviors of roadheader during cutting process.2. The response regularities of roadheader's attitude in steep coal seam, under effects of different factors, are revealed comprehensively. 3. A method to calculate the cutting load is proposed, upon which the three dimension forces on the cutting head can be obtained.

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“…This is a problem unique to underground mining equipment. [3][4][5] Roadheaders are core equipment for excavation in underground coal mines. These are used primarily to excavate roadways prior to coal mining.…”

Section: Introductionmentioning

confidence: 99%

“…This is a problem unique to underground mining equipment. 3–5…”

Section: Introductionmentioning

confidence: 99%

Multisensor information-based adaptive control method for cutting head speed of roadheader

Wang

Yang

Zong

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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An adaptive control method to improve the cutting head speed of roadheaders using multisensor information is proposed, so as to solve the problems of low cutting efficiency and low intelligence of roadheaders during underground tunnelling. The operation of a roadheader is analysed, and a control strategy for its cutting head speed is proposed. In addition, the cutting head speed is categorised into five gears according to the multisensor information of different cutting states. The controller for speed estimation is designed using a back propagation neural network optimised using an improved particle swarm optimisation algorithm. A control system is established in MATLAB to analyse the effectiveness of the method. The simulation results show that an IPSO-BP controller has the best control effect and can attain the target speed. The response time was lower than those of fuzzy logic controllers and traditional PI controllers by 46% and 68%, respectively, and the overshoot decreased by 4.69% and 12.19%, respectively. Furthermore, experimental research verified the effectiveness of this method. This method can adaptively adjust the cutting head speed of a roadheader using multisensor information and is important (both theoretical and practically) for extending the service life of roadheaders and improving tunnelling efficiency.

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Multifactor Analysis of Roadheader’s Body Pose Responses during the Horizontal Cutting Process

Cited by 8 publications

References 20 publications

Multiparameter Control Strategy and Method for Cutting Arm of Roadheader

Multiparameter Control Strategy and Method for Cutting Arm of Roadheader

Modeling and response analysis of the attitude angles of roadheader for steep coal seam

Multisensor information-based adaptive control method for cutting head speed of roadheader

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