Accurate assessment of the brake torque on a rope-braked cycle ergometer     

Gordon  R. S.  Franklin  K. L.  Baker  J.  Davies  B. 《Sports Engineering》2004,7(3):131-138

Sports Engineering - A Monark cycle ergometer is a device globally used in physiological studies to measure the work and energy levels of exercising humans. In this paper a rope-braked cycle...  相似文献   

视觉与本体感觉的反馈信息控制在横马分腿腾越教学中的应用与研究     

刘智丽  唐宁  刘轶茜 《四川体育科学》2002,(2):27-28,31

本文将视觉与本体感觉的反馈信息控制应用于横马分腿腾越动作的教学中，对学生的视觉、本体感觉等反馈信息进行动态调控，并进行对比实验研究．实验结果显示：视觉与本体感觉的反馈信息控制能有效地诱导学生“寻找”完成规定动作所必须的肌肉本体感觉，加速建立正确的运动动力定型，显著地提高教学效率。  相似文献   

BIODEX在大腿、膝关节伤后功能诊断及康复中的应用   总被引：1，自引：0，他引：1  

杨静宜  赖柳明 《北京体育大学学报》1993,(2)

42名有大腿前、后群肌肉拉伤或膝关节急、慢性损伤史的运动员为受试者。用BIODEX 多关节等速测力及康复系统测定膝关节屈、伸肌群肌力,取60(°)/s 向心、离心及240(°)/s 向心收缩的最大力矩(PT)等指标,用“评价表格”进行分析评定,并对力矩曲线加以分析。初步认为,力矩曲线异常具有功能诊断参考价值,并可用于选拔运动员时及时发现伤情。参照BIODEX 测试结果,有针对性的进行康复锻炼,可收到良好效果。  相似文献   

The cumulative and residual fatigue response associated with soccer-specific activity performed on different playing surfaces     

Richard Michael Page  Ben Langley  Mitchell James Finlay  Matt Greig  Christopher Brogden 《Journal of sports sciences》2020,38(5):568-575

ABSTRACT

This study aimed to assess the effect of playing surface (Natural [NT] and Artificial [AT] Turf) on the fatigue response to a soccer-specific exercise protocol (SSEP). Eighteen male soccer players completed the SSEP on NT and AT with pre-, post-, and 48 h post-assessments of eccentric knee flexor (eccKF) and concentric knee extensor peak torque (PT), peak countermovement (CMJ) and squat jump (SJ) height, and Nordic hamstring break angle. No significant main effects for surface or any surface and time interactions were observed for any of the outcome measures, except for eccKF PT recorded at 3.14 rad·s^-1, which was significantly lower 48 h post-trial in the AT condition (AT = 146.3 ± 20.4 Nm; NT = 158.8 ± 24.7 Nm). Main effects for time were observed between pre- and post-trial measures for eccKF PT at all angular velocities, Nordic break angle, CMJ and SJ height. Nordic break angle, and both CMJ and SJ height were significantly impaired 48 h post-trial when compared to pre-trial. The findings of the current study suggest surface dependent changes in eccKF PT which may have implications for recovery and subsequent performance after competition on AT.  相似文献   

智能转矩转速测量仪     

朱维怡 《昆明师范高等专科学校学报》1988,(1)

本文叙述了用微型计算机和相应的接口构成智能转矩转速测量仪。它与同类仪器相比,具有精度高、构造简单、体积小,能自动测量、显示、打印、绘图等特点。  相似文献   

Direct - Torque, Neuro - Fuzzy Control of Induction Motor     

徐君鹏 《河南科技学院学报》2007,35(3):62-65

Fuzzy systems are currently being used in a wide field of industrial and scientific applications. Since the design and especially the optimization process of fuzzy systems can be very time consuming, it is convenient to have algorithms which construct and optimize them automatically. In order to improve the system stability and raise the response speed, a new control scheme, direct - torque neuro - fuzzy control for induction motor drive, was put forward. The design and tuning procedure have been described. Also, the improved stator flux estimation algorithm, which guarantees eccentric estimated flux has been proposed.  相似文献   

电动车能量再生技术     

陈家新  江建中  汪信尧 《上海大学学报(英文版)》2003,7(2):173-177

1　Introduction　Therateddistanceisoneofkeyfactorstolimitthedevelopmentofelectricvehicle (EV)sinceEVwasin vented .Itisawayforincreasingtherateddistancetoputtheadvancedenergyregenerationtechnologyintouse .Manyexperimentsprovethattheactualrateddistanceofaelectricscooterunderthecityroadsur roundingsisabout 35 - 45kmwhileitisabout 5 5 - 6 5kmunderthestandard proving ground .Moreover ,JapanToyotaalsoprovedthattherateddistancecouldbeincreasedby 2 0 %whenusingtheenergyregenera tionsysteminEV .Soi…  相似文献   

浅谈主次梁交叉部位负筋的合理排放     

修昱  夏克 《鸡西大学学报》2003,3(4):71-71,75

本文结合计算分析，得出在主次梁交叉部位负筋的合理排放位置为次梁负筋放在主梁负筋上面。  相似文献   

闽中麻鸡肌纤维生长发育规律的研究     

王立克  李如兰  程云 《安徽科技学院学报》2007,21(1):6-9

选择160只闽中麻鸡在相同的环境条件饲养下,分别于0、7、14、21、28、35、42日龄各随机抽取10只宰杀,研究腿肌、胸肌、翅肌肌纤维直径的变化规律.结果表明:随着日龄的增加,不同部位肌纤维的直径均显著增加(P＜0.01);不同部位肌纤维直径在不同时期发育速度不同,肌纤维发育速度与机体发育速度相关性不明显.  相似文献   

起重机力矩限制器单片机控制系统分析     

许德良  马忠海 《中国教育技术装备》2011,(30)

介绍起重机力矩限制器的工作原理,利用AT89C52单片机设计起重机力矩限制器控制系统。  相似文献