心肺功能评估训练系统的恒功率控制

doi:10.13229/j.cnki.jdxbgxb20170437

Abstract

Abstract: For the non-constant exercise workload (power) due to the fluctuation of pedaling rate in cardiopulmonary function and training system, a new magnetic-resistance generator was designed to adjust the resistance real-timely, instantly and precisely. The constant power can be maintained independent of the pedaling rate within certain range by applying fuzzy PID control theory. To validate the effect of constant power control, experiments were carried out on the improved cardiopulmonary function evaluation and training system and on the Monark cardiopulmonary function evaluation and training system, respectively. Results show that, for the improved system, the instant power curve fluctuates within 8 W of the target power curve, and the control error between the average power during two minutes of the test and the target power is less than 2 W as the pedaling rate changes in the range of 50 r/min to 70 r/min. The new system overcomes the influence of non-constant power output due to the fluctuation of pedaling rate. Compared with the Monark system, the new system improves the constant power control accuracy by 2 W and reduces the control error under the same target power and the same change of pedaling rate.

Key words: automation technology, constant power, fuzzy PID control, cardiopulmonary function evaluation and training, cycle ergometer

CLC Number:

TP29

ZHANG Ru-bin, ZHAN Li-kui, PENG Wei, SUN Shao-ming, LIU Jun-fu, REN Lei. Constant power control in cardiopulmonary function evaluation and training system[J].吉林大学学报(工学版), 2018, 48(4): 1184-1190.

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Constant power control in cardiopulmonary function evaluation and training system

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