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1. 发明专利

JPH02155405A CONTROLLER FOR MOTOR-DRIVEN VEHICLE 失效
公开(公告)号：JPH02155405A
公开(公告)日：1990-06-14
申请号：JP30891888
申请日：1988-12-08
申请人： HITACHI LTD
发明人： KURIHARA SHIRO , ABE KINGO
IPC分类号： B60L9/18 , B60L13/03
摘要： PURPOSE:To enable a predetermined acceleration or deceleration of speed with respect to variations in air gap between a linear induction motor and a reaction plate and the gradient railway line by detecting the real acceleration or deceleration of a train, and controlling the train driving motor so that the real acceleration or deceleration coincides with a target acceleration or deceleration. CONSTITUTION:When a train is moved, an acceleration/deceleration detection circuit 6 detects a real acceleration alpha by an input power drive command 10 and a train speed signal 9. A reference acceleration/deceleration generation circuit 7 generates a target acceleration alphaP, an operation part 4 compares the real acceleration alpha with the alphaF, and sends its deviation to an arithmetic circuit 5. The circuit 5 calculates a control signal with the deviation being zero, and controls an inverter 2. Thus, it can control the train at a predetermined acceleration/deceleration against variations in the air gap between the train linear induction motor and the ground reaction plate and the gradient of railway line.

2. 发明专利

JPH01291603A INVERTER CONTROLLER FOR ELECTRIC ROLLING STOCK 失效
公开(公告)号：JPH01291603A
公开(公告)日：1989-11-24
申请号：JP11700888
申请日：1988-05-16
申请人： HITACHI LTD
发明人： ABE KINGO , KURUSU KEIKI , KURIHARA SHIRO
IPC分类号： B60L3/08 , B60L9/18
摘要： PURPOSE:To detect fault of a speed sensor reliably even at a low speed, by providing a means for detecting the abnormality of a speed sensor based on whether a signal state representing the vehicular speed corresponding to a commanded slip frequency is established under powering operation. CONSTITUTION:Rotation frequencies f1-f4 of induction motors 2 are fed through a frequency selecting/switching section 9 to a minimum value selecting section 10 and a maximum value selecting section 11. When the highest frequency in the rotation frequencies f1-f4 is higher than 10Hz, a highest frequency judging section 6 produces a signal. A speed sensor exhibiting the minimum value when the difference between the highest and lowest frequencies exceeds over 10Hz is judged to be faulty through a frequency comparing section 7. A speed sensor exhibiting rotation frequency lower than a predetermined value upon elapse of predetermined time after provision of a powering command is judged to be faulty through a frequency detecting section 19.

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