Research On The Optimization Method Of Human-machine Interface Layout Of Mining Excavator Driving Space

With the continuous advancement of my country’s industrialization process,the working performance of mining excavators and other construction machinery has achieved a qualitative leap in the past few decades,and the mining efficiency of mining machines has been continuously improved.In the process of performance improvement,the driving space is often ignored as a factor affecting the large input and the small output.The design of the human-machine interface is often copied and applied to the existing design,and less consideration is given to the operating performance of the driver and the whole machine.In the new era,my country has new expectations and requirements for the design of construction machinery.As the only way for operators to interact with large-scale machinery,human-machine interface not only affects the comfort of operators,but also restricts breakthroughs in mechanical performance.The machine interface design also represents the real level of my country in the field of construction machinery.Therefore,the exploration of human-machine interface design methods is imminent.The advantages and disadvantages of the layout of man-machine interface in the cab of mining excavator will directly affect the accuracy and effectiveness of the operator’s operation process.As a complex engineering machinery,mining excavators often carry a number of functions such as operation and walking.There are many design factors that need to be considered in the layout of man-machine interface.It is necessary to take into account the principles of ergonomics and the real working situation of mining excavators,so the solution process is very complicated.How to effectively undertake multi-objective optimization of layout design and produce effective human-machine interface layout is an urgent problem to be solved at present.After sorting out previous theories on human-machine interface and layout optimization,combined with the working situation of mining excavators,the following methods are proposed to apply the man-machine interface layout scheme output:(1)Divide the functional areas of the human-machine interface of the cab.Based on the two functional interfaces of display interface and control interface,put forward the layout principles of various interfaces and display control components respectively to guide the output of layout methods.(2)reference to the relevant theories of human body size in man-machine engineering model,determine the position of the drivers in mine excavator cab,and according to the key points of human body model,or H point(hip),eyespots,hand and interface display and control interface in the driving room layout,drive man-machine interface and coordination.(3)NSGA-Ⅱ algorithm and layout optimization theory are applied to solve the layout of a large number of control components in the human-machine interface.The idea of energy method is introduced to geometrize cloth space and elements to be distributed.According to the importance principle,operation frequency principle and spatial compatibility principle,the layout optimization objective function is constructed to ensure that the human-machine interface layout meets the operation requirements of drivers.Finally,NSGA-Ⅱ algorithm was used to solve the layout optimization model,which reduced the difficulty of multi-objective optimization of the layout model and improved the solving speed.Taking the man-machine interface of a large mining excavator cab as an example,the feasibility of the proposed layout optimization method was verified,and the validity of the output scheme was verified by fuzzy mathematical evaluation method.The final results show that the HMI layout optimization method can effectively output the layout scheme,and the final output layout scheme can meet the multi-objective needs of complex HMI layout,and take into account the operation needs of drivers and the work needs of mining excavators.The method has universality and can be extended to the layout optimization of the human-machine interface of similar construction machinery cab to assist designers in the design of complex human-machine interface.