TY - GEN
T1 - Study on compound control of high speed hydraulic torque-load simulator
AU - Cui, Mingshan
AU - Wang, Shaoping
AU - Jiao, Zongxia
PY - 2005
Y1 - 2005
N2 - With the rapid development of maneuverability of missile, the performance of hydraulic torque-load simulator that loads the air torque to the missile rudder becomes higher and higher. Especially to hydraulic torque-load simulator with high speed, the classical control method is difficult to reach the high performance. This paper presents a combined control method based on fuzzy, PID and phase-correction, which is suitable to high-speed (maximal speed is 500 degree per second) hydraulic load simulator. In the method, the fuzzy rules are modified to be sensitive to large error and large error-differential to increase the dynamic response, shorten the transition time. On the other hand, the fuzzy method is not sensitive to small error and small error-differential that can prevent to produce the small fluctuation in small range and avoid prolonging system response time. In the method, the integral coefficient of PID is used to improve the system stable accuracy. In order to enhance stiffness to exterior disturbance within operational frequency band (10Hz), a phase-correction unit is added to reduce the phase delay at 10Hz frequency point and the extraneous torque at high frequency is reduced rapidly. At the early stage of process of dynamic response, the modified fuzzy method is major to decrease the error and reduce the rising time, whereas the PID has major effect at the end of the stage of dynamic process to reduce the error within 5% error-band rapidly. The application with the new combined control method indicates that the transition time cuts down 40%. At 10 Hz frequency point, phase delay is reduced from - 10 degree to - 3 degree. At the same time, extraneous torque generated by motion of missile rudder, reduces to 50%, that means no more than 20 N m and the dynamic-tracing accuracy is close to 50% of classical method. In a word, the new combined control method not only is very effective in hydraulic torque-load simulator with high speed, but also is applied to those systems with large exterior disturbance.
AB - With the rapid development of maneuverability of missile, the performance of hydraulic torque-load simulator that loads the air torque to the missile rudder becomes higher and higher. Especially to hydraulic torque-load simulator with high speed, the classical control method is difficult to reach the high performance. This paper presents a combined control method based on fuzzy, PID and phase-correction, which is suitable to high-speed (maximal speed is 500 degree per second) hydraulic load simulator. In the method, the fuzzy rules are modified to be sensitive to large error and large error-differential to increase the dynamic response, shorten the transition time. On the other hand, the fuzzy method is not sensitive to small error and small error-differential that can prevent to produce the small fluctuation in small range and avoid prolonging system response time. In the method, the integral coefficient of PID is used to improve the system stable accuracy. In order to enhance stiffness to exterior disturbance within operational frequency band (10Hz), a phase-correction unit is added to reduce the phase delay at 10Hz frequency point and the extraneous torque at high frequency is reduced rapidly. At the early stage of process of dynamic response, the modified fuzzy method is major to decrease the error and reduce the rising time, whereas the PID has major effect at the end of the stage of dynamic process to reduce the error within 5% error-band rapidly. The application with the new combined control method indicates that the transition time cuts down 40%. At 10 Hz frequency point, phase delay is reduced from - 10 degree to - 3 degree. At the same time, extraneous torque generated by motion of missile rudder, reduces to 50%, that means no more than 20 N m and the dynamic-tracing accuracy is close to 50% of classical method. In a word, the new combined control method not only is very effective in hydraulic torque-load simulator with high speed, but also is applied to those systems with large exterior disturbance.
KW - Compound control
KW - Fuzzy control
KW - High speed
KW - Hydraulic simulator
UR - https://www.scopus.com/pages/publications/84961253643
M3 - 会议稿件
AN - SCOPUS:84961253643
T3 - Proceedings of the 6th International Conference on Fluid Power Transmission and Control, ICFP 2005
SP - 650
EP - 654
BT - Proceedings of the 6th International Conference on Fluid Power Transmission and Control, ICFP 2005
A2 - Lu, Yongxiang
A2 - Wang, Qingfeng
A2 - Wei, Li
PB - Inernational Academic Publishers
T2 - 6th International Conference on Fluid Power Transmission and Control, ICFP 2005
Y2 - 5 April 2005 through 8 April 2005
ER -