Temperature limiting controller for electric machines
    1.
    发明授权
    Temperature limiting controller for electric machines 失效
    电机温控器

    公开(公告)号:US06291958B1

    公开(公告)日:2001-09-18

    申请号:US09430608

    申请日:1999-10-29

    IPC分类号: G05D2300

    摘要: A method (10, 30) for actively controlling the temperature (tmotor) of an electric machine operating under torque (T*), speed and/or position control. A controlled output (T*), i.e. torque command, voltage, current or power, is adjusted such that the temperature of the electric machine does not exceed a predetermined reference limit (tref). The method (10, 30) of the present invention performs proportional-integral control (14) to reduce the commanded output (T*) to the motor and thereby prevent the steady-state motor temperature (tmotor) from increasing beyond the predetermined limit (tref). In one embodiment of the method (10), an error term (e) is filtered through a negative pass filter (12) before being combined with an optional decay term (&egr;decay) in a proportional-integral controller (14). A positive pass filter (20) and a negative pass filter (22) provide outputs that are summed and provide an adjusted output command (Tlimited) based upon predetermined relationship. In another embodiment of the present invention, the error term is not filtered, and an output conditioning block (32) is used to determine an adjusted output command (Tlimited).

    摘要翻译: 一种用于主动地控制在扭矩(T *),速度和/或位置控制下操作的电机的温度(tmotor)的方法(10,30)。 调节控制输出(T *),即扭矩指令,电压,电流或功率,使得电机的温度不超过预定的参考极限(tref)。 本发明的方法(10,30)执行比例积分控制(14)以减小对电动机的指令输出(T *),从而防止稳态电动机温度(tmotor)增加超过预定极限( tref)。 在方法(10)的一个实施例中,在与比例积分控制器(14)中的可选衰减项(epsidecay)组合之前,通过负通滤波器(12)对误差项(e)进行滤波。 基于预定关系,正通滤波器(20)和负通滤波器(22)提供相加的输出并提供调整输出指令(Tlimited)。 在本发明的另一个实施例中,误差项不被滤波,并且使用输出调节块(32)来确定调整的输出命令(Tlimited)。

    Associated content storage system
    2.
    发明授权
    Associated content storage system 有权
    相关内容存储系统

    公开(公告)号:US06925524B2

    公开(公告)日:2005-08-02

    申请号:US10249189

    申请日:2003-03-20

    IPC分类号: G06F12/00 G06F12/08 G06F17/30

    CPC分类号: G06F17/30952

    摘要: A relocation system to associatively search a database lookup table with a search key to addressably retrieve a corresponding associate content table record as a search result. The relocation system is implemented in search engine devices having associative memory (e.g., CAM) having one or more sections. The search engine devices employ relocation values when calculating addresses, one per section per device, with the relocation values optionally pre-calculated and stored in relocation registers. The search engine devices may be cascaded to construct a larger search engine. The search engine is typically used with a processor and addressable memory (e.g., RAM or ROM). In particular, the relocation system permits multiple databases to be concurrently stored and worked with in the associative and addressable memory.

    摘要翻译: 一种重定位系统,用于将搜索关键字搜索数据库查找表以可寻址地检索相应的关联内容表格记录作为搜索结果。 重定位系统在具有具有一个或多个部分的关联存储器(例如,CAM)的搜索引擎设备中实现。 搜索引擎设备在计算地址时使用重定位值,每个设备每个部分一个,重定位值可选地预先计算并存储在重定位寄存器中。 搜索引擎设备可以被级联以构造较大的搜索引擎。 搜索引擎通常与处理器和可寻址存储器(例如,RAM或ROM)一起使用。 特别地,重定位系统允许在关联和可寻址存储器中同时存储和处理多个数据库。

    Method for reducing peak phase current and decreasing staring time for an internal combustion engine having an induction machine
    3.
    发明授权
    Method for reducing peak phase current and decreasing staring time for an internal combustion engine having an induction machine 有权
    一种用于降低具有感应电机的内燃机的峰值相电流和降低起动时间的方法

    公开(公告)号:US06335609B1

    公开(公告)日:2002-01-01

    申请号:US09567246

    申请日:2000-05-09

    IPC分类号: H02P540

    摘要: A method for reducing the starting time and reducing the peak phase currents for an internal combustion engine that is started using an induction machine starter/alternator. The starting time is reduced by pre-fluxing the induction machine and the peak phase currents are reduced by reducing the flux current command after a predetermined period of time has elapsed and concurrent to the application of the torque current command. The method of the present invention also provides a strategy for anticipating the start command for an internal combustion engine and determines a start strategy based on the start command and the operating state of the internal combustion engine.

    摘要翻译: 一种用于减少启动时间并减少使用感应电机起动器/交流发电机启动的内燃机的峰值相电流的方法。 通过对感应电机进行预通量来减少启动时间,并且在经过预定时间段之后通过减小通量电流指令来减小峰值相电流,并且与施加转矩电流指令并行。 本发明的方法还提供了一种用于预测内燃机的启动命令的策略,并且基于内燃机的起动命令和操作状态确定启动策略。