The Research Of Memory-Impact Testing Machine And Its Application

Along with our country material industry development, the people have not satisfied to a material impact performance survey and only survey the impact total work, increasingly hoped can further understand the material in moves the detailed situation which under the load function destroys, the survey dynamic mechanics performance index, the traditional impact testing machine cannot satisfy this request.This topic memory type impact test function effectively records the material test specimen in the 20ms instantaneous coherency, elastic and the plastic embattlement change process which attacks, and direct-viewing responds the process with the curve form.The paper first explained the memory type to attack the testing machine the overall structure, simply introduced the machinery structure, the electrically controlled part and the sensor composition, introduced the work flow chart. Has produced the energy survey theory basis and the concrete formula from the principle of conservation energy theory, and turns into formula Jan the model which software may operate. After namely obtains the impact the pivot angle and has custom-made the good impact constant, the impact coefficient, and after the impact before Zero Angle, the elevation angle , the pivot angle then extracts the energy which the impact loses, simultaneously produces the strength value the measuring technique ,how the key point is the sign strength in meditation value method.The paper carries on the discussion in afterwards the chapter to some essential electric circuits, has analyzed between classics 8051CPU and the advanced C8051F060 difference relation, including the internal XRAM size, the difficulty which outside the piece XRAM expands, as well as internal whether has AD, the DA integration, performance how ,internal whether included the key component DMA controller and the FLASH programming ability, the on-line debugging performance has carried on the comparison, why obtained this topic through the contrast to have to use C8051F060 to mix the microprocessor the reason.To the electricity encoder principle circuit design discussion foundation in, has produced the realization angle Displacement gathering algorithm, the design search algorithm four frequency multiplication technologies, carries on the precision measuring using the electricity encoder opposite angle displacement, the measuring accuracyAfterwards the chapter paper discussed the realization angle displacement signal survey hardware and the software flow before, to surveys the instrument calibration module has carried on the key discussion, explained Zero Angle, the elevation angle, the pivot angle survey principle method with the graphic method and produces the software detail flow chart. Afterwards the paper explained with emphasis to the strength value survey hardware design, and produced has realized the electric circuit, in order to effective addressing strength value data acquisition process the zero spot floated moves the question, the paper produced DA which user controller oneself carried to carry on a dynamic accent zero method and the electric circuit, for solved when CPU oneself carried the DA precision insufficient question, proposed used the internal 2 piece of DA controller separately to output the big signal and the differential pressure obtains the small signal, reached 24 DA output the proceed signal supreme position processing realization theory precision, afterward thread DA to adjust zero processing the software flow chart. Paper after above two essential technical introduction, but also has carried on the discussion to the key auxiliary circuit. 16 1MHZ carries which to 060 oneself the frequency AD switch has carried on the discussion , has produced the schematic diagram, establishes the register the content, starts AD the method and the initialization example. In an essential chip which uses to this project, when high speed XRAM 62LV1024 introduction, emphatically explained 060 if connection processing, uses non- duplicate uses the way, enhanced CPU and the XRAM visit speed, simultaneously has fully displayed the CPU performance, has produced the connection diagram, the connection circuit diagram and the initialization example regulation.The present paper uses the DMA controller technology is a this topic characteristic, solved low cost realization high speed gathering to save and to request the microsecond level real-time multitask the difficult problem, the DMA controller use decisive function, the paper first has afterwards analyzed in the DMA controller use back ground principle and 060 microprocessors in the chapter sets at the DMA controller structure, the register definition, the initialization method, the start method and the example regulation.Afterwards in the chapter the paper carried on the discussion to the topic 10 concrete functions modules to produce one by one realizes the algorithm and the flow, practicality and picture, and introduced developed this topic the development environment. With the computer on-line function module is a this topic expansion module, the goal is lets the user through the computer realization to the material test specimen impact test, and transmitted the data, the computer to carry on processing, comprehensively analyzes the conclusion. The paper to attacked the coefficient, the impact constant, the experimental parameter 11 has carried on the design method explanation. Computation content involves which to this topic in, has produced the method with emphasis, because of this project use assembly language, control nimble at the same time, the computation brought has not been convenient, this topic in view of this adverse condition, in addition, used the assembly language primarily, transferred the Language system function entry point address the method to solve this difficult problem, successfully unified the assembly language merit and the C language strong point, and the success applied to this topic, has solved the COS function solution problem. If thoroughly studies, the assembly language may transfer any higher order language .In view of the liquid crystal display free curve topic, the paper has produced this topic realization algorithm, and produces the solution . To asks Mean value ,the printing module, the paper has briefly produced the algorithms explanation.In the final chapter, key and finally carried on the key explanation analysis to the installment test method, the test data form has produced, separately to Zero Angle, the elevation angle, the spatial pivot angle, the impact pivot angle, AD parameter and so on gathering speed and resolution has carried on the detailed explanation, the analysis and gives the conclusion.