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公开(公告)号：US06902028B2
公开(公告)日：2005-06-07
申请号：US10864397
申请日：2004-06-10
申请人： Yuji Takatsuka , Katsuhiko Ohmae , Norihiro Yamaguchi , Susumu Zeniya , Takayuki Kifuku , Shigeki Ohtagaki
发明人： Yuji Takatsuka , Katsuhiko Ohmae , Norihiro Yamaguchi , Susumu Zeniya , Takayuki Kifuku , Shigeki Ohtagaki
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D107/00 , B62D119/00 , B62D127/00 , H02P29/00
CPC分类号： B62D5/0463 , B62D5/0496
摘要： Conventionally, there was a problem that in cases when it is difficult to place a temperature sensor in the vicinity of a heat-generating portion, overheating could not be prevented. Disclosed is an electric power steering control system including a torque sensor for detecting steering force of a steering system; a motor current determination unit for determining the motor current based on the steering force detected by the torque sensor; a temperature sensor for detecting an ambient temperature; a coefficient setting unit for setting a coefficient in accordance with the detected temperature obtained by means of the temperature sensor; a motor current detection unit for detecting a motor current being passed to a motor; a maximum current limit value calculation unit for calculating a maximum current limit value based on the detected current and the coefficient; a current limiting unit for selecting the smaller value between the motor current determined by the motor current determination unit and the maximum current limit value calculated and outputting this as a target current; and a motor current control section for passing the target current to the motor in such a way that the motor current is equal to the detected current, whereby a motor current limit being set according to temperature is applied.
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公开(公告)号：US06860361B2
公开(公告)日：2005-03-01
申请号：US10634955
申请日：2003-08-06
申请人： Yuji Takatsuka , Katsuhiko Ohmae , Norihiro Yamaguchi , Susumu Zeniya , Takayuki Kifuku , Shigeki Ohtagaki
发明人： Yuji Takatsuka , Katsuhiko Ohmae , Norihiro Yamaguchi , Susumu Zeniya , Takayuki Kifuku , Shigeki Ohtagaki
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D107/00 , B62D119/00 , B62D127/00 , H02P29/00
CPC分类号： B62D5/0463 , B62D5/0496
摘要： Conventionally, there was a problem that in cases when it is difficult to place a temperature sensor in the vicinity of a heat-generating portion, overheating could not be prevented. Disclosed is an electric power steering control system including a torque sensor for detecting steering force of a steering system; a motor current determination unit for determining the motor current based on the steering force detected by the torque sensor; a temperature sensor for detecting an ambient temperature; a coefficient setting unit for setting a coefficient in accordance with the detected temperature obtained by means of the temperature sensor; a motor current detection unit for detecting a motor current being passed to a motor; a maximum current limit value calculation unit for calculating a maximum current limit value based on the detected current and the coefficient; a current limiting unit for selecting the smaller value between the motor current determined by the motor current determination unit and the maximum current limit value calculated and outputting this as a target current; and a motor current control section for passing the target current to the motor in such a way that the motor current is equal to the detected current, whereby a motor current limit being set according to temperature is applied.
摘要翻译： 通常，存在难以将温度传感器放置在发热部附近的情况下，不能防止过热的问题。 公开了一种电动助力转向控制系统，包括用于检测转向系统的转向力的转矩传感器; 电动机电流确定单元，用于基于由所述转矩传感器检测到的转向力来确定所述电动机电流; 用于检测环境温度的温度传感器; 系数设定单元，用于根据通过温度传感器获得的检测温度来设定系数; 电动机电流检测单元，用于检测正在传递给电动机的电动机电流; 最大电流限制值计算单元，用于基于检测到的电流和系数来计算最大电流限制值; 电流限制单元，用于选择由电动机电流确定单元确定的电动机电流与计算的最大电流限制值之间的较小值，并将其输出为目标电流; 以及电动机电流控制部分，用于使电动机电流等于检测电流的方式将目标电流传递到电动机，由此施加根据温度设定的电动机电流极限。
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公开(公告)号：US20050258791A1
公开(公告)日：2005-11-24
申请号：US10959067
申请日：2004-10-07
申请人： Eiji Iwami , Susumu Zeniya , Takayuki Kifuku
发明人： Eiji Iwami , Susumu Zeniya , Takayuki Kifuku
IPC分类号： B62D6/00 , B62D5/04 , B62D6/08 , B62D119/00 , H02P7/00
CPC分类号： B62D5/049 , B62D5/0463
摘要： In an electric power steering apparatus in which a third motor target current is determined from a first motor target current determined on the basis of a detection torque from a steering torque detection means and a second motor target current determined using at least a detection value of the motor current detection circuit as one of inputs, and a motor drive signal is calculated on the basis of the third motor target current and a detection current from the motor current detection circuit to control a motor current, there is included a motor current detection circuit failure judgment means for judging a failure of the motor current detection circuit, and when a judgment of failure is made, at least the second motor target current is limited.
摘要翻译： 在电动助力转向装置中，根据来自转向转矩检测装置的检测转矩确定的第一电动机目标电流和使用至少一个检测值确定的第二电动机目标电流来确定第三电动机目标电流 电动机电流检测电路作为输入之一，并且基于第三电动机目标电流和来自电动机电流检测电路的检测电流来计算电动机驱动信号以控制电动机电流，包括电动机电流检测电路故障 用于判断电动机电流检测电路的故障的判断装置，并且当进行故障判断时，至少第二电动机目标电流受到限制。
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4.发明授权Method of detecting the angle of rotation and load torque of a DC motor, and apparatus of detecting the angle of rotation and load torque of a DC motor 失效检测直流电动机的旋转角度和负载转矩的方法以及检测直流电动机的转角和负载转矩的装置
公开(公告)号：US06016042A
公开(公告)日：2000-01-18
申请号：US869213
申请日：1997-06-04
CPC分类号： B62D5/0487 , B62D5/0478 , H02P7/04
摘要： A method of detecting the angle of rotation of a DC motor includes the steps of: driving the DC motor with a predetermined torque for a predetermined period of time which is selected so that the angular acceleration of the DC motor is substantially constant during the above period of time; and calculating the angle of rotation of the DC motor from the driving time period and the voltage generated by the DC motor after the driving of the DC motor is stopped. This method makes it possible to accurately detect the angle of rotation and the load torque using an apparatus having a simple structure.
摘要翻译： 检测直流电动机的旋转角度的方法包括以下步骤：以预定的时间段驱动直流电动机，该预定时间段被选择为使得在上述周期期间直流电动机的角加速度基本恒定 的时间 从驱动时间计算直流电动机的旋转角度，直到停止直流电动机的驱动后由直流电动机产生的电压。 该方法能够使用具有简单结构的装置来精确地检测旋转角度和负载转矩。
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5.发明授权
公开(公告)号：US5913913A
公开(公告)日：1999-06-22
申请号：US757828
申请日：1996-11-27
CPC分类号： B62D5/0463 , B62D5/0484
摘要： A control apparatus for a motor-driven power steering system of a motor vehicle controls the steering system such that a steering torque required to be applied by a driver is prevented from increasing abruptly or steeply even when generation of an assist torque applied to the steering system for assisting the driver in steering operation is to be stopped. The control apparatus includes an operation stop decision mechanism (111, 112, OR) for deciding whether or not an operation stop command is to be issued for stopping control operation for the motor-driven power steering system, a torque detecting mechanism (16, 113) for detecting a steering torque transmitted from an input shaft (21a) to an output shaft (21c) of a steering column (21) of the motor-driven power steering system, and an assist torque control mechanism (114, 116, 117, 118, 13) for updating an assist torque applied by an electric motor (20) to the output shaft (21c) with an assist torque control quantity determined on the basis of a detected torque value outputted from the torque detection mechanism (16, 113), wherein upon issuance of the operation stop command by the operation stop decision mechanism (111, 112, OR), the assist torque control mechanism stops application of the assist torque, provided that the detected torque value is lower than a predetermined value inclusive thereof.
摘要翻译： 用于机动车辆的电动机动力转向系统的控制装置控制转向系统，使得即使在施加到转向系统的辅助转矩的产生时也防止驾驶员施加的转向转矩突然或陡峭地增加 用于辅助驾驶员的转向操作将被停止。 控制装置包括用于判定是否要发出用于停止对电动机动力转向系统的控制操作的操作停止命令的操作停止判定机构（111,112或OR），转矩检测机构（16,113 ），用于检测从所述电动机动力转向系统的转向柱（21）的输入轴（21a）到输出轴（21c）传递的转向转矩，以及辅助转矩控制机构（114,116,117， 用于根据从转矩检测机构（16,113）输出的检测转矩值确定的辅助转矩控制量，将由电动机（20）施加的辅助转矩更新到输出轴（21c） 其特征在于，在由所述动作停止判定机构（111,112，或OR）发出动作停止命令的情况下，辅助转矩控制机构停止施加辅助转矩，只要所述检测转矩值低于规定值 ve。
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公开(公告)号：US06992449B2
公开(公告)日：2006-01-31
申请号：US10959067
申请日：2004-10-07
申请人： Eiji Iwami , Susumu Zeniya , Takayuki Kifuku
发明人： Eiji Iwami , Susumu Zeniya , Takayuki Kifuku
IPC分类号： H02P7/00
CPC分类号： B62D5/049 , B62D5/0463
摘要： In an electric power steering apparatus in which a third motor target current is determined from a first motor target current determined on the basis of a detection torque from a steering torque detection means and a second motor target current determined using at least a detection value of the motor current detection circuit as one of inputs, and a motor drive signal is calculated on the basis of the third motor target current and a detection current from the motor current detection circuit to control a motor current, there is included a motor current detection circuit failure judgment means for judging a failure of the motor current detection circuit, and when a judgment of failure is made, at least the second motor target current is limited.
摘要翻译： 在电动助力转向装置中，根据来自转向转矩检测装置的检测转矩确定的第一电动机目标电流和使用至少一个检测值确定的第二电动机目标电流来确定第三电动机目标电流 电动机电流检测电路作为输入之一，并且基于第三电动机目标电流和来自电动机电流检测电路的检测电流来计算电动机驱动信号以控制电动机电流，包括电动机电流检测电路故障 用于判断电动机电流检测电路的故障的判断装置，并且当进行故障判断时，至少第二电动机目标电流受到限制。
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公开(公告)号：US6161068A
公开(公告)日：2000-12-12
申请号：US340385
申请日：1999-06-28
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D119/00 , B62D137/00
CPC分类号： B62D5/0463 , B62D5/0472
摘要： An electric power steering control system reducing steering torque without making a driver feel uncomfortable torque oscillation, including a rotation speed observer for estimating the rotation speed of a motor based on the output of a torque sensor high pass filter (HPF) and the output of a drive current HPF obtained by removing a steering frequency component from a drive current detection value.
摘要翻译： 一种电动助力转向控制系统，在不使驾驶员感到不舒适的扭矩振动的情况下，减小转向转矩，包括基于转矩传感器高通滤波器（HPF）的输出来估计电动机的转速的转速观测器， 通过从驱动电流检测值中去除转向频率分量而获得的驱动电流HPF。
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公开(公告)号：US06741053B2
公开(公告)日：2004-05-25
申请号：US10267733
申请日：2002-10-10
申请人： Takayuki Kifuku , Katsuhiko Ohmae
发明人： Takayuki Kifuku , Katsuhiko Ohmae
IPC分类号： H02P700
CPC分类号： B62D5/0457 , B62D5/0463 , B62D6/10
摘要： A steering control device is realized which is capable of handling a variety of torque sensors through the same signal processing circuit, and in which a cost increase is suppressed while taking sufficient failsafe measures, having a torque sensor for detecting a signal corresponding to a steering torque in a steering system; a first microcontroller for outputting a steering torque signal equivalent to the steering torque; a second microcontroller for controlling an actuator based on the steering torque signal outputted; actuator driving means for driving the actuator controlling the steering system; and storage means in which a steering torque neutral point compensation data is stored in advance; wherein the first microcontroller compensates a neutral point of the steering torque signal based on the neutral point compensation data stored in the storage means.
摘要翻译： 实现了能够通过相同的信号处理电路处理各种扭矩传感器的转向控制装置，并且在采取足够的故障保护措施的同时抑制成本增加，具有用于检测对应于转向转矩的信号的转矩传感器 在转向系统中; 用于输出与转向转矩相当的转向转矩信号的第一微控制器; 第二微控制器，用于基于输出的转向转矩信号来控制致动器; 用于驱动控制转向系统的致动器的致动器驱动装置; 以及预先存储转向转矩中性点补偿数据的存储装置; 其中第一微控制器基于存储在存储装置中的中性点补偿数据来补偿转向转矩信号的中性点。
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公开(公告)号：US07336456B2
公开(公告)日：2008-02-26
申请号：US11177331
申请日：2005-07-11
IPC分类号： H02H7/08
CPC分类号： B62D5/049 , B62D5/0487 , Y02T10/7258
摘要： An objective is to detect a resolver malfunction without fail, using a low-cost resolver having the small number of the poles, and a control-motor system having advantage in small sizing and high-power outputting. In the control-motor system, the system for driving a 2m-pole motor based on a rotor rotation angle θ detected by a 2n-pole resolver, where m and n being counting numbers, is characterized in that: the sum of the square of a signal modulated by sin θ and the square of a signal modulated by cos θ in the resolver in which an excitation signal generated in said system is modulated by sin θ and cos θ in response to the rotor rotation angle θ of the resolver is compared to a predetermined malfunction threshold value, so that malfunction determination related to the resolver is performed, and also, given that the sum is a2 when the resolver is recognized to be in normal operation, the malfunction determination threshold value is made to be not smaller than {a×cos((π/2)/(m/n))}2.
摘要翻译： 目的是使用具有极小数量的低成本旋转变压器，以及具有小尺寸和高功率输出优点的控制电动机系统，无故障地检测分解器故障。 在控制电动机系统中，基于由2n极解算器检测的转子旋转角度θ驱动2m极电动机的系统，其中m和n是计数数字，其特征在于： 由sinθ调制的信号和在解算器中由cosθ调制的信号的平方，其中在所述系统中产生的激励信号响应于旋转变压器的转子旋转角θ被sinθ和cosθ调制，并与 预定的故障阈值，从而进行与解算器相关的故障判定，并且当解析器被识别为正常操作时，给出总和为“2”，故障判定阈值 被制成不小于{axcos（（pi / 2）/（m / n））} <2>。
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公开(公告)号：US20060055243A1
公开(公告)日：2006-03-16
申请号：US11177331
申请日：2005-07-11
IPC分类号： H02G3/00
CPC分类号： B62D5/049 , B62D5/0487 , Y02T10/7258
摘要： An objective is to detect a resolver malfunction without fail, using a low-cost resolver having the small number of the poles, and a control-motor system having advantage in small sizing and high-power outputting. In the control-motor system, the system for driving a 2m-pole motor based on a rotor rotation angle θ detected by a 2n-pole resolver, where m and n being counting numbers, is characterized in that: the sum of the square of a signal modulated by sin θ and the square of a signal modulated by cos θ in the resolver in which an excitation signal generated in said system is modulated by sin θ and cos θ in response to the rotor rotation angle θ of the resolver is compared to a predetermined malfunction threshold value, so that malfunction determination related to the resolver is performed, and also, given that the sum is a2 when the resolver is recognized to be in normal operation, the malfunction determination threshold value is made to be not smaller than {a×cos((π/2)/(m/n))}2.
摘要翻译： 目的是使用具有极小数量的低成本旋转变压器，以及具有小尺寸和高功率输出优点的控制电动机系统，无故障地检测分解器故障。 在控制电动机系统中，基于由2n极解算器检测的转子旋转角度θ驱动2m极电动机的系统，其中m和n是计数数字，其特征在于： 由sinθ调制的信号和在解算器中由cosθ调制的信号的平方，其中在所述系统中产生的激励信号响应于旋转变压器的转子旋转角θ被sinθ和cosθ调制，并与 预定的故障阈值，从而进行与解算器相关的故障判定，并且当解析器被识别为正常操作时，给出总和为“2”，故障判定阈值 被制成不小于{axcos（（pi / 2）/（m / n））} <2>。
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