Method for testing and extracting single-step acting force state under continuous gaits
A state test and extraction method technology, applied in the direction of measuring force components, special data processing applications, instruments, etc., to achieve the effect of improving test extraction accuracy, reducing time and steps, and high precision
Active Publication Date: 2020-04-17
HUAIYIN INSTITUTE OF TECHNOLOGY
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By associating the reaction force F z , adaptively set the search threshold, which solves the measurement error caused by the difference in the measurement load
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[0026] The technical solution of the present invention will be further introduced below in conjunction with the accompanying drawings and specific implementation methods.
[0027] figure 1 It is a method flowchart of the present invention, comprising the following steps:
[0028] a. Use relevant measuring devices to collect and store the force and moment values of each dimension synchronously, and the vertical ground reaction force F z must be included;
[0029] b. Search and find the ground reaction force F from the stored data z The maximum value of F p and the corresponding position I p ;
[0030] c. Judgment F p Whether it meets the set trigger threshold F min , if satisfied, go to the next step, otherwise end;
[0031] In one embodiment, the trigger threshold F min The setting is obtained through experiments. The person with the lightest weight in the application space is selected to generate force to obtain the waveform of the collected data, and the value of ...
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The invention discloses a method for testing and extracting a single-step acting force state under continuous gaits. The method comprises the following steps: synchronously acquiring and storing eachdimensional force and a torque value thereof according to a time sequence; searching for the maximum value Fp of stored ground reaction force Fz and corresponding storage position Ip; judging whetherthe Fp is greater than a set trigger threshold Fmin or not, if so, entering the next step, and otherwise, ending; setting a search threshold FSmin, respectively traversing and searching forwards and backwards from the Ip until the Fz is less than the FSmin, and respectively determining the positions of corresponding points as Ia and Ib; extracting data of test forces and test moments of all dimensions between Ia and Ib as a single gait value of this time, and deleting all test data between Ia and Ib; and repeating the search to search the maximum value of the ground reaction force Fz until jumping out of the cycle. According to the method, the single gait force state is effectively extracted by utilizing the non-negative characteristic of the measured vertical ground reaction force Fz, andthe technology has very practical value in solving the scientific research and engineering problems of the human gait test force.
Description
technical field [0001] The invention relates to a test and extraction method of an active force state, in particular to a single-step active force state test and extraction method under continuous gait. Background technique [0002] With the development of society, architects are constantly pursuing the slender and beautiful appearance of structures in the process of civil engineering design, which brings problems that the scale of structural systems is increasing, and the resonant frequency and damping energy dissipation capacity of structures are decreasing. Small, when the frequency is reduced to a certain extent and close to the human excitation frequency, it is easy to cause resonance, which brings many problems of unsuitable structural use and structural damage. In order to explore the vibration mechanism of the structure under the action of pedestrians, engineers and researchers need to test the reaction force generated by the human feet on the structure to extract th...
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IPC IPC(8): G01L5/16G06F16/2455G06F16/28
CPCG01L5/16G06F16/24565G06F16/283
Inventor 高延安
Owner HUAIYIN INSTITUTE OF TECHNOLOGY