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    • 5. 发明授权
    • Temperature estimation based on a signal oscillation
    • 基于信号振荡的温度估计
    • US07522434B2
    • 2009-04-21
    • US11260885
    • 2005-10-27
    • Anusheel NaharRobert Donald Lorenz
    • Anusheel NaharRobert Donald Lorenz
    • H02M7/00
    • H02M1/32G01K7/425
    • A method of estimating a temperature at a component of a device is provided. The temperature may be used to provide thermal load management of the device. In an exemplary embodiment, a switched mode power converter includes a power converter module and a switch that controls a switching cycle of the power converter module. A signal includes a bus voltage component and an oscillating signal component at least partially caused by switching of the switch. A switch instant of the switch can be isolated. A characteristic of the oscillating signal component of the signal can be detected. For example, a first peak voltage of the oscillating signal component can be detected after the switch instant. The temperature of the power converter module is estimated using the detected characteristic of the oscillating signal component. For example, the temperature can be estimated using the first peak voltage and best-fit curve parameters in solving a linear or a quadratic equation.
    • 提供了一种估计器件部件温度的方法。 温度可用于提供设备的热负载管理。 在示例性实施例中,开关模式功率转换器包括功率转换器模块和控制功率转换器模块的开关周期的开关。 信号包括至少部分地由开关的切换部分引起的总线电压分量和振荡信号分量。 可以隔离开关的开关瞬间。 可以检测信号的振荡信号分量的特性。 例如,可以在切换瞬间之后检测振荡信号分量的第一峰值电压。 使用检测到的振荡信号分量的特性来估计功率转换器模块的温度。 例如,可以使用第一峰值电压和最佳拟合曲线参数来求解线性或二次方程来估计温度。
    • 6. 发明授权
    • Observer for engine crankshaft torque
    • 发动机曲轴扭矩观察员
    • US06714852B1
    • 2004-03-30
    • US09502700
    • 2000-02-11
    • Robert Donald LorenzRoy Inge Davis
    • Robert Donald LorenzRoy Inge Davis
    • G06F1900
    • G05B13/04F02B77/085F02D35/02F02D35/024F02D41/0047F02D41/1497F02D41/401F02D2041/1416F02D2041/1433F02D2200/1004F02D2200/1006
    • An engine crankshaft torque observer (10) and method of operation. An engine combustion process (14) is modeled (26) to develop modeled pressure estimates of combustion chamber pressures in engine cylinders according to certain engine inputs, such as fuel (20), EGR (22), and timing (24), that influence combustion chamber pressures. Kinematics (16) relating reciprocal motion of pistons in the engine cylinders to an engine crankshaft and engine friction (18) relating running friction of the engine to engine crankshaft rotation are also modeled (28; 30). A processor processes the certain engine inputs through the combustion process model to develop modeled pressure estimates which are processed through the kinematics model to develop modeled positive torque contribution due to combustion processes and through the friction model to develop modeled torque loss due to running friction. The modeled positive torque contribution due to combustion processes and the modeled torque loss due to running friction are processed to develop a measurement of indicted torque output of the engine. The combustion process model for developing modeled pressure estimates of combustion chamber pressures in engine cylinders is also novel.
    • 发动机曲轴扭矩观测器(10)及其运行方法。 对发动机燃烧过程(14)进行建模(26),以根据某些发动机输入(例如燃料(20),EGR(22)和定时(24))开发对发动机气缸中的燃烧室压力的建模压力估计,其影响 燃烧室压力。 运动学(16)将发动机气缸中的活塞的往复运动与发动机曲轴相关联并且将发动机的运行摩擦与发动机曲轴旋转相关的发动机摩擦(18)建模(28; 30)。 处理器通过燃烧过程模型处理某些发动机输入,以开发模拟压力估计,其通过运动学模型处理,以开发由燃烧过程引起的建模的正转矩贡献,并通过摩擦模型来开发由于运行摩擦造成的模型扭矩损失。 对由于燃烧过程造成的建模的正转矩贡献以及由于运行摩擦造成的模型扭矩损失进行处理,以开发发动机的指示扭矩输出的测量值。 用于开发发动机气缸中燃烧室压力建模压力估计的燃烧过程模型也是新颖的。