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1. 发明专利

JP2010151235A Magnetic bearing control device 有权
标题翻译：磁力轴承控制装置
公开(公告)号：JP2010151235A
公开(公告)日：2010-07-08
申请号：JP2008330129
申请日：2008-12-25
申请人： Kawasaki Heavy Ind Ltd , 川崎重工業株式会社
发明人： YOSHIHARA TAKEHIRO , MATSUO KAZUYA , ABE KAZUHIRO , SHINDO YUJI , KINOSHITA YUJI , KUJIME TAISUKE
IPC分类号： F16C32/04
CPC分类号： F16C32/0457 , F16C32/0444
摘要： PROBLEM TO BE SOLVED: To suppress generation of ripple current without increasing a circuit scale. SOLUTION: Saw-tooth-wave generation circuits 33, 43 generate saw-tooth-wave signals S33, S43 in synchronous with synchronizing S20a, S20b signals having phases different from each other at 180°, respectively. A current control sub-circuit 61 synchronizes with the saw-tooth-wave signal S33 and performs ON/OFF control of transistors Tr1, Tr2 so that a difference between a current command value It1 and a current detection value Id1 of a coil L1 becomes zero. A current control sub-circuit 62 synchronizes with the saw-tooth-wave signal S43 and performs ON/OFF control of transistors Tr3, Tr4 so that a difference between a current command value It2 and a current detection value Id2 of a coil L2 becomes zero. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：抑制纹波电流的产生而不增加电路规模。解决方案：锯齿波发生电路33,43与同步S20a同步地产生锯齿波信号S33，S43，分别具有彼此相位相差180°的S20b信号。电流控制子电路61与锯齿波信号S33同步，对晶体管Tr1，Tr2进行ON / OFF控制，使得电流指令值It1和线圈L1的电流检测值Id1之间的差成为零。电流控制子电路62与锯齿波信号S43同步，并对晶体管Tr3，Tr4进行ON / OFF控制，使得电流指令值It2与线圈L2的电流检测值Id2之间的差成为零。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2002303563A DEVICE FOR CONTROLLING COLLECTION TUNNEL PRESSURE OF BLOWOUT TYPE WIND TUNNEL 失效
公开(公告)号：JP2002303563A
公开(公告)日：2002-10-18
申请号：JP2001106222
申请日：2001-04-04
申请人： KAWASAKI HEAVY IND LTD
发明人： KIMURA FUMIHITO , MORITA ISAMU , KUJIME TAISUKE
IPC分类号： G01M9/02
摘要： PROBLEM TO BE SOLVED: To prevent deformation and breakage of a straightening member 63 such as a punching metal in a collection tunnel and a model 64 or the like in a measurement chamber 58 by preventing a phenomenon that a pressure in the collection tunnel 56 of a blowout type wind tunnel fluctuates periodically positively and negatively during stop of ventilation measurement. SOLUTION: An opening of a regulator 55 is controlled so that the pressure in the collection tunnel 56 detected by a sensor 71 during the ventilation measurement becomes a pressure P1 for ventilation measurement set by a pressure setting means 72 for ventilation measurement. The opening of the regulator 55 is controlled so that a pressure P2 detected by the sensor 71 during stop of the measurement becomes the atmospheric pressure P0 set by an atmospheric pressure setting means 73. Thereby, during the stop of the measurement, the pressure in the collection tunnel 56 is maintained to the atmospheric pressure. Therefore, the pressure in the collection tunnel 56 does not fluctuate periodically, and the air flows in one direction the same as during the ventilation measurement and without flow back.

3. 发明专利

JP2002276590A SURGING DETECTING DEVICE FOR COMPRESSOR 失效
公开(公告)号：JP2002276590A
公开(公告)日：2002-09-25
申请号：JP2001076898
申请日：2001-03-16
申请人： KAWASAKI HEAVY IND LTD
发明人： KIMURA FUMIHITO , MORITA ISAMU , KUJIME TAISUKE
IPC分类号： F04D27/02
摘要： PROBLEM TO BE SOLVED: To prevent a delay of surging detection of a compressor, and to quickly detect the surging. SOLUTION: A sensor S is provided at a suction side or a discharge side of the compressor 1 to detect at least any one of pressure, flow quantity and flow speed. Output of the sensor W is commonly given to a first and a second first order time-lag circuits 11 and 12 forming a frequency and gain characteristic means 9. Output A and B of each first order time-lag circuit 11 and 12 is given to a subtracting means 13, and an output C expressing a difference between the output A and B is given to a first and a second level discrimination means 23 and 24 forming a variable counting means 22 and having a hysteresis characteristic, and output D and E of the level discrimination means 23 and 24 are counted by a counter 62 when a mutual judging circuit 9 judges that the output is mutually generated. When a count value X of the counter reaches the preset value X0 or more within the preset time W1 set by the timer 65, surging is decided to be generated.

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