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141. 发明授权

US06456324B1 Image shifting image pickup apparatus using filter for removing spatial frequency component 失效
标题翻译：使用滤波器去除空间频率分量的图像移位图像拾取装置
公开(公告)号：US06456324B1
公开(公告)日：2002-09-24
申请号：US08997559
申请日：1997-12-23
申请人： Eiji Yamada , Toshiaki Harada , Tetsuo Iwaki
发明人： Eiji Yamada , Toshiaki Harada , Tetsuo Iwaki
IPC分类号： H04N5225
CPC分类号： H04N9/045 , H04N5/20 , H04N5/21 , H04N5/349 , H04N9/646
摘要： An image pick-up apparatus is provided with: a charge-coupled device for picking up imaging light from a subject and forming image data; an image-shift mechanism for shifting the charge-coupled device to a plurality of relative positions with respect to the imaging light so as to allow the charge-coupled device to form the image data at the relative positions; an LPF constituted by a filter for removing a spatial frequency component that appears due to a light-quantity difference between a plurality of pieces of image data generated by the charge-coupled device through the image-shift mechanism; and a memory control section for combining the plurality of image data. With this arrangement, it is possible to suppress a striped pattern due to the light-quantity difference, and consequently to improve the image quality.
摘要翻译：图像拾取装置具有：电荷耦合装置，用于拾取来自被摄体的成像光并形成图像数据; 图像转换机构，用于将电荷耦合器件相对于成像光线移动到多个相对位置，以允许电荷耦合器件在相对位置形成图像数据; 由滤光器构成的LPF，该滤波器用于去除由于由电荷耦合器件通过图像转换机构产生的多条图像数据之间的光量差而出现的空间频率分量; 以及用于组合多个图像数据的存储器控制部分。通过这种布置，可以抑制由于光量差引起的条纹图案，从而提高图像质量。

142. 发明授权

US06340847B1 Power output apparatus and method of controlling the same 失效
标题翻译：动力输出装置及其控制方法
公开(公告)号：US06340847B1
公开(公告)日：2002-01-22
申请号：US09484795
申请日：2000-01-18
申请人： Yasutomo Kawabata , Shigeru Matsuhashi , Nobuyoshi Takagi , Akihiko Kanamori , Eiji Yamada
发明人： Yasutomo Kawabata , Shigeru Matsuhashi , Nobuyoshi Takagi , Akihiko Kanamori , Eiji Yamada
IPC分类号： F02N1102
CPC分类号： B60W20/11 , B60K6/365 , B60K6/40 , B60K6/448 , B60K2006/262 , B60L7/14 , B60L11/005 , B60L11/123 , B60L11/14 , B60L11/1861 , B60L15/20 , B60L2210/40 , B60L2220/12 , B60L2220/14 , B60L2220/16 , B60L2220/52 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/441 , B60L2240/443 , B60L2250/26 , B60W10/02 , B60W10/06 , B60W10/08 , B60W20/00 , Y02T10/56 , Y02T10/6217 , Y02T10/6243 , Y02T10/6286 , Y02T10/641 , Y02T10/645 , Y02T10/7005 , Y02T10/7022 , Y02T10/7044 , Y02T10/705 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275 , Y02T10/92 , Y10S903/903 , Y10S903/906 , Y10S903/91 , Y10S903/914 , Y10S903/945 , Y10S903/946 , Y10S903/951
摘要： In a power output apparatus of the present invention, a control unit sets a WOT (wide open throttle) line L2, where the maximum torque of an engine attains, as a boundary between an over drive area and an under drive area in the case where a rotor shaft of an assist motor is set in a state of over drive linkage. The control unit determines a target working point of an outer rotor shaft of a clutch motor, which functions as a drive shaft, based on an externally required output, and selects the WOT line L2 as a performance line of the engine in the case where the target working point of the outer rotor shaft is present in the under drive area. The control unit then sets a switching instruction flag, in order to change the state of linkage of the rotor shaft of the assist motor from the state of over drive linkage to a state of under drive linkage. This arrangement of the invention reduces the maximum load capacity of the assist motor and decreases the maximum electric current of an inverter circuit for driving the assist motor.
摘要翻译：在本发明的动力输出装置中，控制单元将发动机的最大转矩达到的WOT（宽油门）线路L2设定为过驱动区域和下驱动区域之间的边界，辅助马达的转子轴被设定为越过驱动连杆的状态。控制单元基于外部所需的输出来确定用作驱动轴的离合器电动机的外转子轴的目标工作点，并且选择WOT线L2作为发动机的性能线，在这种情况下外转子轴的目标工作点位于下驱动区域。然后，控制单元设定切换指示标志，以便将辅助马达的转子轴的联动状态从过驱动连杆的状态变为下驱动连杆的状态。本发明的这种布置降低了辅助马达的最大负载能力，并且降低了用于驱动辅助马达的逆变器电路的最大电流。

143. 发明授权

US5952810A Motor control apparatus and method of controlling motor 有权
标题翻译：电动机控制装置及其控制方法
公开(公告)号：US5952810A
公开(公告)日：1999-09-14
申请号：US157619
申请日：1998-09-21
申请人： Eiji Yamada , Yasutomo Kawabata
发明人： Eiji Yamada , Yasutomo Kawabata
IPC分类号： B60L11/14 , H02P6/18 , H02P6/20 , H02P21/00 , H02P27/04 , H02P27/06 , H02P1/46
CPC分类号： B60L11/1803 , B60L11/123 , B60L11/1851 , B60L15/025 , B60L15/20 , H02P6/18 , H02P6/20 , B60L2220/14 , Y02T10/6217 , Y02T10/643 , Y02T10/7005 , Y02T10/705 , Y02T10/7077 , Y02T10/72 , Y02T10/7275
摘要： The object of the present invention is to provide a technique that detects an electrical angle of a synchronous motor with a high accuracy and adequately controls the synchronous motor even when the synchronous motor is driven under a non-loading condition. The direction that passes through a rotating shaft of the motor and causes a magnetic flux to pass through permanent magnets is defined as a d-axis. Even when the motor is driven under the non-loading condition and no flow of electric currents through windings is required in response to a torque requirement, the method of the present invention applies a voltage to the d-axis, based on an estimated electrical angle. Application of the voltage is realized by switching on and off a transistor inverter with a delay of a dead time. The method solves voltage equations with the applied voltages and the electric currents corresponding to the voltages, and controls the motor while correcting the electrical angle with errors of the arithmetic operations. A dead-time correction is carried out prior to the solution of the voltage equations, based on the direction of the flow of the electric current through the d-axis. This eliminates the effects of the dead time on the switching operations.
摘要翻译：本发明的目的是提供一种即使在非负载状态下驱动同步电动机的情况下也能够高精度地检测同步电动机的电角度并充分地控制同步电动机的技术。通过电动机的旋转轴并使磁通量通过永磁体的方向被定义为d轴。即使当电动机在非负载状态下被驱动并且响应于转矩要求而不需要通过绕组的电流时，本发明的方法基于估计的电角度向d轴施加电压。电压的施加是通过在延迟死区时间来接通和关断晶体管逆变器来实现的。该方法利用所施加的电压和对应于电压的电流来解决电压方程，并且通过算术运算的误差来校正电角度来控制电动机。基于电流通过d轴的流动的方向，在解决电压方程之前执行死区时间校正。这消除了死区时间对切换操作的影响。

144. 发明授权

US5903112A Power output apparatus and method of controlling the same 失效
标题翻译：动力输出装置及其控制方法
公开(公告)号：US5903112A
公开(公告)日：1999-05-11
申请号：US638556
申请日：1996-04-26
申请人： Eiji Yamada , Takao Miyatani , Yasutomo Kawabata , Akihiko Kanamori
发明人： Eiji Yamada , Takao Miyatani , Yasutomo Kawabata , Akihiko Kanamori
IPC分类号： H02P15/00 , B60K6/20 , B60K6/448 , B60K6/52 , B60K17/356 , B60K23/08 , B60L7/14 , B60L11/12 , B60L11/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W10/30 , B60W20/00 , H02K7/11 , H02K51/00 , B60K1/00
CPC分类号： B60W20/10 , B60K17/356 , B60K6/22 , B60K6/26 , B60K6/365 , B60K6/40 , B60K6/448 , B60K6/52 , B60L11/123 , B60L11/14 , B60L7/003 , B60L7/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , H02K51/00 , B60K2006/262 , B60K23/0808 , B60L2220/52 , B60L2240/421 , B60L2240/423 , B60L2240/486 , B60L2260/28 , B60W2510/244 , B60W2710/0644 , B60W2710/0666 , B60W2710/081 , B60W2710/083 , B60W2710/105 , B60W2710/1061 , Y02T10/6217 , Y02T10/6243 , Y02T10/6265 , Y02T10/6286 , Y02T10/641 , Y02T10/646 , Y02T10/648 , Y02T10/7005 , Y02T10/7077 , Y10S903/903 , Y10S903/906 , Y10S903/91 , Y10S903/916 , Y10S903/947 , Y10S903/951 , Y10T477/76
摘要： A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked with a crankshaft (56) of a gasoline engine (50) and an inner rotor (34) connecting with a drive shaft (22). The assist motor (40) includes a rotor (42) connecting with the drive shaft (22). When the residual capacity of a battery (94) is less than an allowable minimum value, a control CPU (90) of the controller (80) controls a first driving circuit (91) to enable the clutch motor (30) to carry out the power operation and apply a first torque to the drive shaft (22) in the direction of rotation of the drive shaft (22). The control CPU (90) concurrently controls a second driving circuit (92) to enable the assist motor (40) to carry out the regenerative operation and apply a second torque to the drive shaft (22) in the reverse of the rotation of the drive shaft (22). The second torque is substantially equal in magnitude but opposite in direction to the first torque. The electric power regenerated by the assist motor (40) is supplied to the battery (94) to supplement the electric power of the battery (94). The power output apparatus (20) of the invention can thus make the torque output to the drive shaft (22) approximately equal to zero.
摘要翻译：本发明的动力输出装置（20）包括离合器马达（30），辅助马达（40）和用于控制离合器马达（30）和辅助马达（40）的控制器（80）。离合器马达30包括与汽油发动机50的曲轴56和与驱动轴22连接的内转子34的外转子32。辅助马达（40）包括与驱动轴（22）连接的转子（42）。当电池（94）的剩余容量小于允许的最小值时，控制器（80）的控制CPU（90）控制第一驱动电路（91）以使离合器电动机（30）能够执行动力操作，并且在驱动轴（22）的旋转方向上向驱动轴（22）施加第一扭矩。控制CPU（90）同时控制第二驱动电路（92），以使得辅助马达（40）能够执行再生操作，并且与驱动轴（22）的旋转相反地向驱动轴（22）施加第二扭矩轴（22）。第二扭矩的幅度基本相等，但与第一转矩相反。由辅助马达（40）再生的电力被供给到电池（94）以补充电池（94）的电力。因此，本发明的动力输出装置（20）能够使驱动轴（22）的扭矩输出大致等于零。

145. 发明授权

US5873801A Power output apparatus and method of controlling the same 失效
标题翻译：动力输出装置及其控制方法
公开(公告)号：US5873801A
公开(公告)日：1999-02-23
申请号：US639438
申请日：1996-04-29
申请人： Yoshiaki Taga , Eiji Yamada , Takao Miyatani , Yasutomo Kawabata
发明人： Yoshiaki Taga , Eiji Yamada , Takao Miyatani , Yasutomo Kawabata
IPC分类号： H02P15/00 , B60K6/20 , B60K6/448 , B60K6/52 , B60K17/356 , B60K23/08 , B60L7/14 , B60L11/12 , B60L11/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W10/30 , B60W20/00 , H02K49/10 , H02K51/00 , B60K41/02
CPC分类号： B60W20/10 , B60K17/356 , B60K6/22 , B60K6/26 , B60K6/365 , B60K6/40 , B60K6/448 , B60K6/52 , B60L11/123 , B60L11/14 , B60L7/003 , B60L7/14 , B60W10/06 , B60W10/08 , B60W30/20 , H02K51/00 , B60K2006/262 , B60K23/0808 , B60L2220/52 , B60L2240/421 , B60L2240/423 , B60L2240/486 , B60L2260/28 , B60W20/00 , B60W2510/244 , B60W2710/0644 , B60W2710/0666 , B60W2710/081 , B60W2710/083 , B60W2710/105 , B60W2710/1061 , Y02T10/6217 , Y02T10/6243 , Y02T10/6265 , Y02T10/6286 , Y02T10/641 , Y02T10/642 , Y02T10/7005 , Y02T10/7077 , Y10S903/903 , Y10S903/906 , Y10S903/91 , Y10S903/916 , Y10S903/947 , Y10S903/951 , Y10T477/26 , Y10T477/32 , Y10T477/327
摘要： A power output apparatus (20) includes an engine (50), a clutch motor (30) connecting with a crankshaft (56), an assist motor (40) connecting with a drive shaft (22), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). When an electrical angle of the rotors in the clutch motor (30) is equal to .pi./2, a constant current is made to flow through three-phase coils (36) of the clutch motor (30) in order to enable a torque equal to or greater than a maximum torque ripple of the engine (50) to be applied from the clutch motor (30) to a drive shaft (22) and the crankshaft (56). This locks up an outer rotor (32) and an inner rotor (34) of the clutch motor (30). This structure enables the torque and rotation of the engine (50) to be directly transmitted to the drive shaft (22) at a high efficiency.
摘要翻译：动力输出装置（20）包括发动机（50），与曲轴（56）连接的离合器马达（30），与驱动轴（22）连接的辅助马达（40），以及用于控制离合器马达30和辅助马达40。当离合器马达（30）中的转子的电角度等于π/ 2时，使恒定电流流过离合器马达（30）的三相线圈（36），以使转矩等于达到或大于从离合器马达（30）施加到驱动轴（22）和曲轴（56）的发动机（50）的最大扭矩波动。这锁定离合器马达（30）的外转子（32）和内转子（34）。这种结构使得发动机（50）的转矩和转速能够以高效率直接传递到驱动轴（22）。

146. 发明授权

US5844342A Power output apparatus and method of controlling the same 失效
标题翻译：动力输出装置及其控制方法
公开(公告)号：US5844342A
公开(公告)日：1998-12-01
申请号：US886458
申请日：1997-07-01
申请人： Takao Miyatani , Yasutomo Kawabata , Shigetaka Nagamatsu , Eiji Yamada , Tetsuya Miura , Akihiko Kanamori , Shigeru Matsuhashi , Yutaka Taga , Ryuji Toh , Satoshi Koide , Hiroaki Urano , Norihiko Akao , Shinji Kogure , Yoshiaki Taga, deceased , Shigeo Taga, heir , Takiko Taga, heiress
发明人： Takao Miyatani , Yasutomo Kawabata , Shigetaka Nagamatsu , Eiji Yamada , Tetsuya Miura , Akihiko Kanamori , Shigeru Matsuhashi , Yutaka Taga , Ryuji Toh , Satoshi Koide , Hiroaki Urano , Norihiko Akao , Shinji Kogure , Yoshiaki Taga, deceased , Shigeo Taga, heir , Takiko Taga, heiress
IPC分类号： F02D29/02 , B60K1/02 , B60K6/20 , B60K6/24 , B60K6/26 , B60K6/36 , B60K6/387 , B60K6/40 , B60K6/448 , B60K6/543 , B60L11/02 , B60L11/12 , B60W10/02 , B60W10/06 , B60W10/08 , B60W10/26 , B60W20/00 , H02K16/00 , H02K7/20 , H02K7/10 , F16H3/72
CPC分类号： B60W20/40 , B60K6/22 , B60K6/448 , B60K6/543 , B60L11/123 , B60L11/14 , B60L15/20 , B60W10/02 , B60W10/06 , B60W10/08 , B60W10/10 , B60W10/26 , B60W20/00 , B60K1/02 , B60K2006/262 , B60L2210/40 , B60L2220/14 , B60L2220/52 , B60L2240/421 , B60L2240/423 , B60L2240/429 , B60L2240/441 , B60L2240/443 , B60L2240/445 , B60W2510/244 , B60W2710/0616 , B60W2710/065 , B60W2710/0666 , Y02T10/56 , Y02T10/6217 , Y02T10/6243 , Y02T10/6286 , Y02T10/641 , Y02T10/645 , Y02T10/646 , Y02T10/648 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275 , Y10S903/903 , Y10S903/905 , Y10S903/906 , Y10S903/909 , Y10S903/914 , Y10S903/918 , Y10S903/945 , Y10S903/946 , Y10S903/951
摘要： A power output apparatus 20 includes an engine 50, a clutch motor 30 having rotors 31 and 33 respectively linked with a crankshaft 56 and a drive shaft 22, an assist motor 40 attached to a rotor-rotating shaft 38, a first clutch 45 for connecting and disconnecting the rotor-rotating shaft 38 to and from the crankshaft 56, a second clutch 46 for connecting and disconnecting the rotor-rotating shaft 38 to and from the drive shaft 22, and a controller 80 for controlling the motors 30 and 40. The controller 80 operates the clutches 45 and 46 according to the states of the engine 50 and the drive shaft 22 and changes the connection of the rotor-rotating shaft 38, so as to enable power output from the engine 50 to be efficiently converted by the motors 30 and 40 and output to the drive shaft 22.
摘要翻译：动力输出装置20包括发动机50，具有分别与曲轴56和驱动轴22连接的转子31和33的离合器马达30，安装在转子旋转轴38上的辅助马达40，用于连接的第一离合器45 并将转子旋转轴38与曲轴56分离，用于将转子转动轴38与驱动轴22连接和分离的第二离合器46以及用于控制马达30和40的控制器80。控制器80根据发动机50和驱动轴22的状态来操作离合器45和46，并且改变转子转动轴38的连接，从而能够通过马达有效地转换来自发动机50的动力输出 30和40，并输出到驱动轴22。

147. 发明授权

US5804934A Power output apparatus and method of controlling the same 失效
标题翻译：动力输出装置及其控制方法
公开(公告)号：US5804934A
公开(公告)日：1998-09-08
申请号：US644261
申请日：1996-05-10
申请人： Eiji Yamada , Takao Miyatani , Yasutomo Kawabata , Ryouji Mizutani , Yoshiaki Taga
发明人： Eiji Yamada , Takao Miyatani , Yasutomo Kawabata , Ryouji Mizutani , Yoshiaki Taga
IPC分类号： H02K7/11 , B60K6/20 , B60K6/448 , B60K6/52 , B60K17/356 , B60K23/08 , B60L7/14 , B60L11/12 , B60L11/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W10/30 , B60W20/00 , H02K51/00 , H02P5/46
CPC分类号： B60W20/13 , B60K17/356 , B60K6/22 , B60K6/26 , B60K6/365 , B60K6/40 , B60K6/448 , B60K6/52 , B60L11/123 , B60L11/14 , B60L7/003 , B60L7/14 , B60W10/06 , B60W10/08 , B60W10/26 , B60W10/30 , B60W20/00 , H02K51/00 , B60K2006/262 , B60K23/0808 , B60L2220/52 , B60L2240/421 , B60L2240/423 , B60L2240/486 , B60L2260/28 , B60W2510/244 , B60W2710/0644 , B60W2710/0666 , B60W2710/081 , B60W2710/083 , B60W2710/105 , B60W2710/1061 , Y02T10/6217 , Y02T10/6243 , Y02T10/6265 , Y02T10/6286 , Y02T10/641 , Y02T10/646 , Y02T10/648 , Y02T10/7005 , Y02T10/7077 , Y10S903/903 , Y10S903/906 , Y10S903/91 , Y10S903/916 , Y10S903/947 , Y10S903/951
摘要： A power output apparatus (20) of the present invention includes a clutch motor (30), an assist motor (40), and a controller (80) for controlling the clutch motor (30) and the assist motor (40). The clutch motor (30) includes an outer rotor (32) linked with a crankshaft (56) of a gasoline engine (50) and an inner rotor (34) connecting with a drive shaft (22). The assist motor (40) includes a rotor (42) connecting with the drive shaft (22). An electric current flowing through three-phase coils (36) in the clutch motor (30) enables the outer rotor (32) to be coupled with the inner rotor (34) with a certain slip. Electrical energy corresponding to the certain slip is recovered as an electric power via a first driving circuit (91). The assist motor (40) is controlled with the electric power via a second driving circuit (92) so as to apply a torque to the drive shaft (22). The power output apparatus (20) of the invention can transmit the power generated by the gasoline engine (50) to the drive shaft (22) at a high efficiency and produce a torque in the direction of rotation of the crankshaft (56).
摘要翻译：本发明的动力输出装置（20）包括离合器马达（30），辅助马达（40）和用于控制离合器马达（30）和辅助马达（40）的控制器（80）。离合器马达30包括与汽油发动机50的曲轴56和与驱动轴22连接的内转子34的外转子32。辅助马达（40）包括与驱动轴（22）连接的转子（42）。流过离合器马达30中的三相线圈36的电流使外转子32能够以一定的滑差与内转子34连接。通过第一驱动电路（91）将对应于该滑差的电能恢复为电力。辅助马达（40）经由第二驱动电路（92）通过电力进行控制，以向驱动轴（22）施加扭矩。本发明的动力输出装置（20）能够以高效率将由汽油发动机（50）生成的动力传递给驱动轴（22），并且在曲轴（56）的旋转方向上产生转矩。

148. 发明授权

US5608300A Electrical angle-detecting apparatus and driving system of synchronous motor using the same 失效
标题翻译：电动角度检测装置和同步电动机的驱动系统
公开(公告)号：US5608300A
公开(公告)日：1997-03-04
申请号：US328063
申请日：1994-10-24
申请人： Yasutomo Kawabata , Eiji Yamada , Tetsuya Miura , Yoshiaki Taga
发明人： Yasutomo Kawabata , Eiji Yamada , Tetsuya Miura , Yoshiaki Taga
IPC分类号： H02P6/20 , B60L11/18 , B60L15/02 , H02P6/16 , H02P6/18 , H02P6/22
CPC分类号： B60L11/1807 , B60L15/025 , H02P6/185 , H02P6/22 , B60L2220/14 , H02P6/182 , Y02T10/643 , Y02T10/7005
摘要： The present invention provides a system for detecting a rotational orientation or electrical angle of a rotor without any specific sensor so as to efficiently control a synchronous motor even while the rotor is at a stop or rotates at a relatively low speed. An electrical angle of a rotor (50) is determined according to a previously stored relationship between inductances of different interphases and electrical angles. At a first step, an electrical angle .phi. is calculated either in a range of 0 through .pi. or in a range of .pi. through 2.pi. by approximation. At a second step, a range where the electrical angle .phi. belongs to is specified by taking advantage of asymmetrical property of a maximum current in response to a voltage applied to each interphase. An equivocal electrical angle .theta. is then determined in a range of 0 through 2.pi.. In order to control the driving current of a three-phase synchronous motor (40) at better efficiency, a preferable system of the invention determines the electrical angle according to the above method while the rotor (50) is under inactivating condition or rotates at a speed of less than a predetermined rotating speed, and detects the electrical angle with a reverse electromotive voltage while the rotor (50) rotates at a speed of not less than the predetermined rotating speed.
摘要翻译：本发明提供了一种用于检测没有任何特定传感器的转子的旋转取向或电角度的系统，以便即使在转子停止或以相对低的速度旋转时也能有效地控制同步电动机。根据先前存储的不同相间电感和电角度的关系确定转子（50）的电角度。在第一步骤中，通过近似，在0至pi的范围内或在pi至2π的范围内计算电角度phi。在第二步骤中，通过利用响应于施加到每个相间的电压的最大电流的不对称性来指定电角度phi所属的范围。然后在0至2π的范围内确定不明确的电角度θ。为了以更高的效率来控制三相同步电动机（40）的驱动电流，本发明的优选系统根据上述方法确定电角度，同时转子（50）处于失活状态或在一个速度小于预定转速，并且当转子（50）以不小于预定旋转速度的速度旋转时，用反向电动势检测电角度。

149. 发明授权

US5488636A Digital data detector 失效
标题翻译：数字数据检测器
公开(公告)号：US5488636A
公开(公告)日：1996-01-30
申请号：US266755
申请日：1994-06-28
申请人： Eiji Yamada , Hitoshi Takeuchi
发明人： Eiji Yamada , Hitoshi Takeuchi
IPC分类号： G11B20/14 , H03H17/02 , H04L7/02 , H04L7/033 , H04L25/02 , H03D1/00
CPC分类号： H03H17/02 , H04L7/0334
摘要： A digital data detector samples a signal at twice the data rate and calculates a phase interval from a zero crossing point to the current sampling point. The phase of the current sampling point is predicted based on the phase of a sampling point located before the current sampling point, the phase of a sampling point located at least two points before the current sampling point, and a zero crossing detection signal. A predicted error is calculated between a calculated phase interval and a predicted current phase. The frequency band of the predicted error is limited, and the phase of the current sampling point is calculated according to the band-limited predicted error, the predicted current phase, and the zero crossing detection signal. A data detection clock is detected in synchronization with a received digital data according to the calculated phase of each sampling point. A digital data value is detected using the phase interval, the calculated current phase, and sampling data. The predicted error is band-limited, and the phase of the current sampling point is calculated to follow only fluctuation due to wow and flutter in a relatively low frequency band. Since a clock signal is detected for data detection according to the calculated phase, digital data can be detected with a small data error rate even from received digital data having a low signal to noise ratio.
摘要翻译：数字数据检测器以两倍的数据速率对信号进行采样，并计算从过零点到当前采样点的相位间隔。基于位于当前采样点之前的采样点的相位，位于当前采样点之前至少两点的采样点的相位和过零检测信号来预测当前采样点的相位。在计算的相位间隔和预测的电流相位之间计算预测误差。预测误差的频带受到限制，根据带限预测误差，预测电流相位和过零检测信号计算当前采样点的相位。根据计算出的每个采样点的相位，与接收到的数字数据同步地检测数据检测时钟。使用相位间隔，计算出的电流相位和采样数据来检测数字数据值。预测误差为带限制，并且计算当前采样点的相位，以仅在相对低频带中由于哇音和颤振引起的波动。由于根据计算出的相位检测到用于数据检测的时钟信号，所以即使从具有低信噪比的接收数字数据也可以以小的数据错误率检测数字数据。

150. 发明授权

US5220264A Control system for an AC servomotor having a permanent magnet type 失效
标题翻译：具有永久磁铁型的交流伺服电机的控制系统
公开(公告)号：US5220264A
公开(公告)日：1993-06-15
申请号：US740895
申请日：1991-08-06
申请人： Eiji Yamada
发明人： Eiji Yamada
IPC分类号： H02P6/06 , H02M5/458 , H02P27/04
CPC分类号： H02M5/4585 , H02P27/045 , H02P2201/03
摘要： In an AC servomotor control system consisting of an inverter for controlling a rotational speed and an output torque of an AC servomotor, a converter for controlling a DC voltage at a connecting point between an inverter and a converter, and a controller, the DC voltage is controlled at a constant voltage when the rotational speed is under a rated speed .omega..sub.b, and controlled as an increasing voltage in proportion to the rotational speed when it is over the rated speed .omega..sub.b so that the output torque of the servomotor is maintained at a constant torque.
摘要翻译：在由用于控制交流伺服电机的转速和输出转矩的逆变器构成的交流伺服电动机控制系统中，用于控制逆变器与转换器之间的连接点的直流电压的转换器以及控制器，所述直流电压为当旋转速度低于额定转速ωb时，以恒定的电压被控制，并且当其超过额定速度ωb时，作为与转速成比例的增加的电压被控制，使得伺服电动机的输出转矩维持在恒转矩。

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