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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文    专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 The effect of bionic V-ring surface on the aerodynamic noise of a circular cylinder 会议论文 4th International Conference of Bionic Engineering, ICBE 2013, August 13, 2013 - August 16, 2013, Nanjing, China Shi L.; Wang W. Q.; Zhang C. C.; Wang J.; Ren L. Q. 收藏  |  浏览/下载：20/0  |  提交时间：2015/04/27 Linear auto disturbance rejection controller for vector-controlled PMSM drive system (EI CONFERENCE) 会议论文 2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011, December 16, 2011 - December 18, 2011, Changchun, China Du L.; Zhang K.; Jin G. 收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25 A high-performance robust controller of permanent-magnet synchronous motor (PMSM) drive with cascade linear auto disturbance rejection controller (LADRC) is proposed. The robust controller combines the simplicity of linear controller and the merit of the auto disturbance rejection controller (ADRC). First  a systematic mathematical model is derived according to the required specifications for the PMSM drive system. Then  for the model  this paper designs the controller that includes three first-order LADRCs. The controller does not rely on the accurate mathematical model of motor. The controller can estimate and compensate the disturbances that include load disturbance and systematic parameters changes by the linear extended state observer (LESO). Simulation results show that compared with conventional PI controller  the proposed approach has strong robustness. In the same load disturbance  the speed fluctuation of the LADRCs accounts for 30% of PI controller. 2011 IEEE.   Friction compensation with repeat control at low speed for an optoelectronic system (EI CONFERENCE) 会议论文 Optomechatronic Systems III, November 12, 2002 - November 14, 2002, Stuttgart, Germany Chen J.; Guo J.; Chen T.; Bai W. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Concerning the disturbances at low speed  such as friction at zero crossings and the moment fluctuation of the motor  we explore the repeat control method rooted in study law to compensate the low-speed-disturbances  and the system's properties at low speed are improved greatly. Here we present our works. Section 1 is the introduction. The friction and moment fluctuation of the motor at low speed for the optoelectronic system are tested out which are shown in section 2. We introduce a repeat controller to the system to compensate the low-speed disturbances in section 3. Concerning the stability  a filter is added to the repeat controller. The experimental results are discussed in section 4. Not only the repeat control can overcome some low-speed-disturbances  but is more useful when tracking a periodic input signal.   Low speed compensation for the fluctuation of the motor moment in an optoelectronic tracking systems 会议论文 2002 Chen J.; Guo J.; Zhai B. C.; Liu J. 收藏  |  浏览/下载：5/0  |  提交时间：2013/03/28