CN103158581A - 具有电动机的车辆的电流传感器重新配置方法 - Google Patents
具有电动机的车辆的电流传感器重新配置方法 Download PDFInfo
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Abstract
本发明公开一种设置具有驱动电动机的车辆的电流传感器的方法,根据本发明的示例性实施方式,其可包括确定车辆停止其移动的第一状态,确定车辆的驱动电动机的需求扭矩为零的第二状态,如果满足第一状态和第二状态则停止供应至驱动电动机的电流,以及补偿控制驱动电动机的驱动电动机控制单元的电流传感器的偏移。如果满足第一状态和第二状态预定时间,可以补偿偏移。因此,在车辆停止移动的预定驱动条件下补偿电流传感器的偏移,并且因此防止了在车辆中可能产生的抖动现象和电机扭矩波动。
Description
相关申诸的空叉引用
本申请要求于2011年12月9日在韩国知识产权局提交的韩国专利申请第10-2011-0132262号的优先权和权益,其全部内容并入本文以供参考。
技术领域
本发明涉及一种对具有驱动电动机的车辆的电流传感器进行设置的方法,其具体通过重置电流传感器的偏移在特定条件下精确控制驱动电动机。
背景技术
通常,三相电流传感器布置在驱动电动机控制单元(MCU)内,其中电流传感器的偏移根据其温度而变化。
当温度上升时,驱动电动机的电流在低速状态下变高。如果这种状态持续预定时间,三相电流传感器的输出值变得不精确。
因此,产生驱动电动机扭矩波动现象,其中驱动电动机的输出扭矩变化,并且产生抖动现象(creep surge)。
已经研究有效补偿电流传感器偏移的方法,以便提前防止扭矩波动现象和抖动现象。然而,迄今为止,这些方法是不足的。
上述在该背景技术部分公开的信息仅用于增强对本发明背景的理解,因此其可能含有不构成在该国本领域普通技术人员已经知晓的现有技术的信息。
发明内容
本发明致力于提供一种对具有驱动电动机的车辆的电流传感器进行设置的方法,其具有补偿电流传感器的偏移的优势。具体地,本方法能够补偿电流传感器的偏移,以便防止扭矩波动现象和抖动现象。
根据本发明的示例性实施方式的对具有驱动电动机的车辆的电流传感器进行设置的方法,可包括确定车辆停止移动的第一状态,确定车辆的驱动电动机的需求扭矩为零的第二状态,如果满足第一状态和第二状态则停止向驱动电动机供应电流,以及补偿控制驱动电动机的驱动电动机控制单元的电流传感器的偏移。
根据各个实施方式,如果满足第一状态和第二状态预定时间,可补偿偏移。
根据各个实施方式,在停止向驱动电动机供应电流的过程中,车辆控制部(VCU)可产生驱动电动机关闭指令,并且驱动电动机控制单元关闭绝缘栅双极晶体管(IGBT)。
根据各个实施方式,电流传感器可以是三相型电流传感器。
用于实现以上目标的本发明通常在车辆停止移动的预定驱动条件下补偿电流传感器的偏移,并且因此防止了在车辆中会产生的抖动现象和电动机扭矩波动。
在下文中讨论本发明的其它方面和示例性实施方式。
附图说明
现在将参考附图图示的本发明的某些示例性实施方式来详细地描述本发明的上述和其它特征,下文给出的这些实施方式仅仅用于示例说明,因此不是对本发明的限制,其中:
图1是根据本发明的示例性实施方式的具有驱动电动机的车辆的示意图。
图2是示出根据本发明的示例性实施方式的重新配置具有驱动电动机的车辆的电流传感器的方法的流程图。
<附图标记>
100:电动机控制单元
110:驱动电动机
120:电流传感器
130:车辆控制单元
具体实施方式
下面将参考附图详细地说明本发明的示例性实施方式。尽管将结合示例性实施方式描述本发明,但应当理解,本说明书无意于将本发明局限于这些示例性实施方式。相反,本发明不仅要涵盖这些示例性实施方式,还要涵盖由所附权利要求所限定的本发明的精神和范围内的各种替代形式、修改、等效形式和其它实施方式。
应理解,本文使用的术语“车辆”或“车辆的”或其它类似术语包括通常的机动车,例如,包括多功能运动车(SUV)、公共汽车、卡车、各种商务车的客车,包括各种船只和船舶的水运工具,飞行器等等,并且包括混合动力车、电动车、插入式混合电动车、氢动力车和其它代用燃料车(例如,来源于石油以外的资源的燃料)。如本文所提到的,混合动力车是具有两种或多种动力源的车辆,例如,具有汽油动力和电动力的车辆。
图1是根据本发明的示例性实施方式的具有驱动电动机的车辆的示意图。
参考图1,具有驱动电动机的车辆包括车辆控制单元130、电动机控制单元100、驱动电动机110、和电流传感器120。在本发明的示例性实施方式中,车辆可以是混合动力车、电动车、或燃料电池车。
通常,当补偿电流传感器120的偏移时,电流传感器120应用于电池管理系统(BMS)和电动机控制单元(MCU)100。通常,在车辆的启动状态下在将电流施加至驱动电动机110之前,补偿偏移一次。
因为如所述在启动状态下补偿偏移一次,所以不能在行驶时实施补偿。因此,通过偏移的变化产生抖动现象和电动机扭矩波动。
然而,根据本发明的示例性实施方式,在车辆停止移动时的预定驱动条件下更频繁地补偿电流传感器120的偏移。结果,防止了车辆的抖动现象和电动机扭矩波动。
图2是示出根据本发明的示例性实施方式的重新配置具有驱动电动机的车辆的电流传感器的方法的流程图。
参考图2,在步骤S200中,启动车辆并且开始控制。接下来,在步骤S210中,确定车辆是否停止移动(也称为“第一状态”)。可以通过速度传感器(未示出)或任何其它适当的检测装置检测这种停止状态。
如果满足第一状态,则在步骤S220中确定需求扭矩是否为零(也称为“第二状态”)。可以通过任何适当的方式例如加速踏板(未示出)的信号来检测需求扭矩。
如果满足第二状态,则在步骤S230中确定第一状态和第二状态是否均持续满足预定时间。这可以通过任何适当的装置来确定,例如计时器(未示出),其可与速度传感器和加速踏板(或其它适当的检测装置)结合使用,持续检测是否满足第一和第二状态。
如果在步骤S230中第一状态和第二状态持续预定时间,执行步骤S240,并且如果不持续第一状态和第二状态,执行步骤S250。
在步骤S240中,关断传递到驱动电动机110的操作电流,并且执行补偿电流传感器120的偏移的模式,该电流传感器120布置在电动机控制单元100中。
在步骤S250中,当第一和第二状态未持续预定时间时该步骤S250在步骤S230之后实施,或该步骤S250在步骤S240之后实施,电流被供应至驱动电动机110。
然后,如果在步骤S260中关闭车辆的操作,在步骤S270中结束控制。如果不关闭车辆的操作,则过程返回到步骤S210。
补偿驱动电动机110的偏移的方法对本领域普通技术人员是已知的,并且因此在本发明的示例性实施方式中省略其详细说明。如此,用于在步骤S240中补偿电流传感器的偏移的模式可以根据任何已知的方法。
当中断供应至驱动电动机110的电流时,这发生在步骤S240中,车辆控制单元(VCU)130产生驱动电动机关闭指令,并且电动机控制单元100关闭绝缘栅双极晶体管(IGBT)。此外,根据示例性实施方式,电流传感器120可以是三相电流传感器。当然,电流传感器120不必限制为仅仅是三相型的。
因此,根据示例性实施方式,执行驱动电动机的重新配置过程,以便通过确定车辆的停止状态(即,车辆是否停止)、如果车辆停止则关断供应至驱动电动机的三相电流、随后设置电流传感器的输出电压为0安培来重新配置该系统的偏移。
此外,本发明的(控制部的)控制逻辑可以实施为含有通过处理器、控制器等执行的可执行程序指令的非暂时性计算机可读介质。计算机可读介质的例子包括但不限于,ROM、RAM、光盘(CD)-ROM、磁带、软盘、优盘、智能卡和光学数据存储装置。还能够在网络耦合的计算机系统中分布计算机可读记录介质,使得例如通过远程信息处理服务器或控制器局域网(CAN)以分散的方式存储并且执行计算机可读介质。
尽管本发明结合目前被认为是实用的示例性实施方式进行了描述,但应当理解本发明不限于所公开的实施方式。相反,本发明意在涵盖包括在随附权利要求的精神和范围内的各种变更和等同布置。
Claims (5)
1.一种设置具有驱动电动机的车辆的电流传感器的方法,包括:
确定是否满足第一状态,其中所述第一状态是车辆停止其移动;
如果满足所述第一状态,确定是否满足第二状态,其中所述第二状态是车辆的所述驱动电动机的需求扭矩为零;
如果满足所述第一状态和所述第二状态,停止供应至所述驱动电动机的电流;以及
补偿控制所述驱动电动机的驱动电动机控制单元的电流传感器的偏移。
2.如权利要求1所述的设置电流传感器的方法,其中如果满足所述第一状态和所述第二状态预定时间,补偿所述偏移。
3.如权利要求1所述的设置电流传感器的方法,其中在停止供应至所述驱动电动机的电流的步骤中,车辆控制部(VCU)产生驱动电动机关闭指令,并且所述驱动电动机控制单元关闭绝缘栅双极晶体管(IGBT)。
4.如权利要求1所述的设置电流传感器的方法,其中所述电流传感器是三相型电流传感器。
5.一种含有由处理器或控制器执行的程序指令的非暂时性计算机可读介质,所述计算机可读介质包括:
确定车辆是否停止其移动的程序指令;
当车辆停止其移动时确定车辆的驱动电动机的需求扭矩是否为零的程序指令;
当车辆停止其移动且车辆的所述驱动电动机的需求扭矩为零时停止供应至所述驱动电动机的电流的程序指令;以及
对控制所述驱动电动机的驱动电动机控制单元的电流传感器的偏移补偿进行控制的程序指令。
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