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1. 发明申请

US20110040450A1 ELECTRIC POWER STEERING APPARATUS 有权
标题翻译：电动转向装置
公开(公告)号：US20110040450A1
公开(公告)日：2011-02-17
申请号：US12989187
申请日：2009-06-10
申请人： Keisuke Izutani , Hiroshi Kawamura
发明人： Keisuke Izutani , Hiroshi Kawamura
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： B62D5/0481 , B62D5/0484
摘要： An electric power steering apparatus drives a motor to generate a steering assist force according to a steering torque and includes an output circuit for supplying the motor with electric power from at least one of a battery and an auxiliary power supply. The electric power steering apparatus has a control circuit which at or after detection of a breakdown of the battery, determines a length of time to the end of steering assist (decreasing time t1) based on the amount of energy stored in the auxiliary power supplies and which takes the determined length of time to perform output decreasing control to gradually decrease the upper limit of power supplied for the steering assist to practically zero according to a constant gradient. Thus is provided an electric power steering apparatus which is adapted to prevent a sudden fall of the steering assist force in the event of a battery breakdown while effectively utilizing the available stored energy.
摘要翻译：电动助力转向装置驱动电动机以根据转向转矩产生转向辅助力，并且包括用于向电动机提供来自电池和辅助电源中的至少一个的电力的输出电路。电动助力转向装置具有控制电路，其在检测到电池故障之后或之后，基于存储在辅助电源中的能量的量来确定转向辅助结束时的时间长度（减小时间t1）;以及其采用所确定的时间长度来执行输出减小控制，以根据恒定梯度逐渐减小为转向辅助提供的功率的上限，几乎为零。因此，提供了一种电动助力转向装置，其适于在有效利用可用的储存能量的同时防止在电池击穿的情况下转向辅助力的突然下降。

2. 发明授权

US08473161B2 Electric power steering apparatus 有权
标题翻译：电动助力转向装置
公开(公告)号：US08473161B2
公开(公告)日：2013-06-25
申请号：US12989187
申请日：2009-06-10
申请人： Keisuke Izutani , Hiroshi Kawamura
发明人： Keisuke Izutani , Hiroshi Kawamura
IPC分类号： A01B69/00 , B62D6/00 , B63G8/20
CPC分类号： B62D5/0481 , B62D5/0484
摘要： An electric power steering apparatus drives a motor to generate a steering assist force according to a steering torque and includes an output circuit for supplying the motor with electric power from at least one of a battery and an auxiliary power supply. The electric power steering apparatus has a control circuit which at or after detection of a breakdown of the battery, determines a length of time to the end of steering assist (decreasing time t1) based on the amount of energy stored in the auxiliary power supplies and which takes the determined length of time to perform output decreasing control to gradually decrease the upper limit of power supplied for the steering assist to practically zero according to a constant gradient. Thus is provided an electric power steering apparatus which is adapted to prevent a sudden fall of the steering assist force in the event of a battery breakdown while effectively utilizing the available stored energy.
摘要翻译：电动助力转向装置驱动电动机以根据转向转矩产生转向辅助力，并且包括用于向电动机提供来自电池和辅助电源中的至少一个的电力的输出电路。电动助力转向装置具有控制电路，其在检测到电池故障之后或之后，基于存储在辅助电源中的能量的量来确定转向辅助结束时的时间长度（减小时间t1）;以及其采用所确定的时间长度来执行输出减小控制，以根据恒定梯度逐渐减小为转向辅助提供的功率的上限，几乎为零。因此，提供了一种电动助力转向装置，其适于在有效利用可用的储存能量的同时防止在电池击穿的情况下转向辅助力的突然下降。

3. 发明申请

US20110035107A1 ELECTRIC POWER STEERING APPARATUS AND CONTROL METHOD THEREFOR 有权
标题翻译：电力转向装置及其控制方法
公开(公告)号：US20110035107A1
公开(公告)日：2011-02-10
申请号：US12933785
申请日：2009-04-02
申请人： Keisuke Izutani , Kazuyuki Yoshida
发明人： Keisuke Izutani , Kazuyuki Yoshida
IPC分类号： B62D6/00
CPC分类号： B26D5/04 , B62D5/0457 , B62D5/0475 , H02J7/00 , H02P6/08
摘要： An electric power steering apparatus comprises a charge-discharge circuit capable of configuring a circuit for charging an auxiliary power supply and a circuit for discharging a battery and the auxiliary power supply as well as configuring a discharge-preference circuit which enables only the discharge of the auxiliary power supply while avoiding the charge thereof. In the apparatus, a control circuit performs a power latch operation of carrying on control till the end of a predetermined period of time following an operation of turning off an ignition key, and also causes the charge-discharge circuit to configure the discharge-preference circuit thereby enabling steering assist accompanied by the discharge of the auxiliary power supply.
摘要翻译：一种电动助力转向装置，其特征在于，具备能够构成用于对辅助电源进行充电的电路的充放电电路，以及用于对电池和辅助电源进行放电的电路，以及构成放电偏好电路，辅助电源，同时避免其充电。在该装置中，控制电路进行进行控制的电源锁存动作，直到关闭点火钥匙的操作之后的预定时间段结束，并且还使充放电电路构成放电偏好电路从而能够伴随着辅助电源的放电而进行转向辅助。

4. 发明授权

US08660751B2 Electric power steering apparatus and control method therefor 有权
标题翻译：电动助力转向装置及其控制方法
公开(公告)号：US08660751B2
公开(公告)日：2014-02-25
申请号：US12933785
申请日：2009-04-02
申请人： Keisuke Izutani , Kazuyuki Yoshida
发明人： Keisuke Izutani , Kazuyuki Yoshida
IPC分类号： B26D5/04 , H02J7/00
CPC分类号： B26D5/04 , B62D5/0457 , B62D5/0475 , H02J7/00 , H02P6/08
摘要： An electric power steering apparatus comprises a charge-discharge circuit capable of configuring a circuit for charging an auxiliary power supply and a circuit for discharging a battery and the auxiliary power supply as well as configuring a discharge-preference circuit which enables only the discharge of the auxiliary power supply while avoiding the charge thereof. In the apparatus, a control circuit performs a power latch operation of carrying on control till the end of a predetermined period of time following an operation of turning off an ignition key, and also causes the charge-discharge circuit to configure the discharge-preference circuit thereby enabling steering assist accompanied by the discharge of the auxiliary power supply.
摘要翻译：一种电动助力转向装置，其特征在于，具备能够构成用于对辅助电源进行充电的电路的充放电电路，以及用于对电池和辅助电源进行放电的电路，以及构成放电偏好电路，辅助电源，同时避免其充电。在该装置中，控制电路进行进行控制的电源锁存动作，直到关闭点火钥匙的操作之后的预定时间段结束，并且还使充放电电路构成放电偏好电路从而能够伴随着辅助电源的放电而进行转向辅助。

5. 发明授权

US08418801B2 Electric power steering system 有权
标题翻译：电动助力转向系统
公开(公告)号：US08418801B2
公开(公告)日：2013-04-16
申请号：US13367694
申请日：2012-02-07
申请人： Keisuke Izutani
发明人： Keisuke Izutani
IPC分类号： B62D6/00 , B62D5/04
CPC分类号： B62D5/0481 , B62D5/046
摘要： An inverter energy consumption calculating portion estimates the actual power consumption of a steering operation assist motor after an engine is placed in an idle-stop state, and a command value of current to be supplied to the steering operation assist motor is limited such that the command value is smaller as the energy consumption is larger. The inverter energy consumption calculating portion calculates the energy consumption of an inverter drive circuit by integrating an amount of electric power consumed by the drive circuit.
摘要翻译：变频器能量消耗计算部估计发动机处于怠速停止状态之后的转向操作辅助电动机的实际功率消耗，并且限制提供给转向操作辅助电动机的电流的指令值，使得指令随着能源消耗的增加，价值就越小。逆变器能量消耗计算部通过对驱动电路消耗的电力量进行积分来计算逆变器驱动电路的能量消耗。

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