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1. 发明授权

US06202629B1 Engine speed governor having improved low idle speed stability 有权
标题翻译：发动机调速器具有改进的低怠速稳定性
公开(公告)号：US06202629B1
公开(公告)日：2001-03-20
申请号：US09323462
申请日：1999-06-01
申请人： G. George Zhu , Albert E. Sisson
发明人： G. George Zhu , Albert E. Sisson
IPC分类号： F02D4114
CPC分类号： F02D31/007 , F02D41/0097 , F02D2041/1409 , F02D2041/143 , F02D2041/1432
摘要： A system and method for controlling the speed of an engine, or a speed governor, receives an error signal indicative of the difference between the actual engine speed and a commanded engine speed. This error signal is passed through a linear controller that determines a fuel flow rate in units of volume per unit time. The fuel flow rate is a substantially linear function of engine speed, and more specifically engine speed error. The output of the linear controller is fed to a non-linear compensator that determines a fueling command signal as a non-linear function of actual engine speed and fuel flow rate. The speed governor can accurately control engine speeds at low idle conditions. In one embodiment, the non-linear compensator utilizes a three-dimensional table of fueling command values as a function of fuel flow rate and engine speed. In another embodiment, the compensator applies a transfer function utilizing low and high calibration speed values enveloping a low engine speed. In another feature of the invention, a speed sensing system applies a zero order sample and hold to a sensor pulse train to generate a preliminary speed signal. This preliminary speed signal is fed to a software-based first order sample and hold component that calculates an integrated error value, leading to a speed signal value that is substantially free from frequency aliasing.
摘要翻译：用于控制发动机或速度调节器的速度的系统和方法接收指示实际发动机转速和指令发动机转速之间的差异的误差信号。该误差信号通过线性控制器，其以单位时间的体积为单位确定燃料流量。燃料流量是发动机速度的基本线性函数，更具体地说是发动机转速误差。线性控制器的输出被馈送到非线性补偿器，其将加油命令信号确定为实际发动机转速和燃料流量的非线性函数。调速器可以在低空闲条件下精确控制发动机转速。在一个实施例中，非线性补偿器利用作为燃料流量和发动机速度的函数的加油命令值的三维表。在另一个实施例中，补偿器利用包围低发动机转速的低和高校准速度值来应用传递函数。在本发明的另一个特征中，速度感测系统将零阶采样和保持应用于传感器脉冲串以产生初速度信号。该初步速度信号被馈送到基于软件的一阶采样和保持分量，其计算积分误差值，导致基本上没有频率混叠的速度信号值。

2. 发明授权

US06185996B1 System and method for diagnosing output power of an internal combustion engine 失效
标题翻译：用于诊断内燃机输出功率的系统和方法
公开(公告)号：US06185996B1
公开(公告)日：2001-02-13
申请号：US08970821
申请日：1997-11-14
申请人： Chuan He , G. George Zhu , Dennis O. Taylor , Leslie A. Roettgen , Mark F. Bares , Steven G. Smith , Richard D. Johnston , Yue Y. Wang , Emma Sweetland , James A. Rupp , Eric K. Bradley
发明人： Chuan He , G. George Zhu , Dennis O. Taylor , Leslie A. Roettgen , Mark F. Bares , Steven G. Smith , Richard D. Johnston , Yue Y. Wang , Emma Sweetland , James A. Rupp , Eric K. Bradley
IPC分类号： G01M1500
CPC分类号： G01M15/044
摘要： A system and method for diagnosing output power of an internal combustion engine includes means for diagnosing potential causes of low engine output power or torque and means for estimating actual engine output power or torque. In a preferred embodiment of the diagnosis of engine output power, low engine output power is first investigated for authenticity to verify whether a low engine output power condition exists. If one exists, a zero fueling engine cranking test is conducted to determine whether relative compression values for each of the cylinders are within specification, and any problems associated therewith are corrected by service personnel. If the low engine output power problem is not corrected in accordance with the engine cranking test, a snap-throttle cylinder balancing test is conducted to balance the relative power contribution from each cylinder. If the cylinder balancing test does not correct the low engine output power problem, a road test is conducted to estimate the actual engine output power for comparison with a rated engine output power over a desired range of engine speeds.
摘要翻译：用于诊断内燃机的输出功率的系统和方法包括用于诊断低发动机输出功率或扭矩的潜在原因的装置以及用于估计实际发动机输出功率或扭矩的装置。在发动机输出功率诊断的优选实施例中，首先调查低发动机输出功率的真实性，以验证是否存在低发动机输出功率状况。如果存在，则进行零加油发动机起动试验，以确定每个气缸的相对压缩值是否在规定范围内，并且与其相关的任何问题由维修人员校正。如果根据发动机起动试验不能校正低发动机输出功率问题，则进行快速节气门缸平衡试验以平衡来自每个气缸的相对功率贡献。如果气缸平衡测试不能纠正低发动机输出功率问题，则进行道路测试以估计实际的发动机输出功率，以便在发动机转速的期望范围内与额定发动机输出功率进行比较。

3. 发明授权

US06438510B2 Recursive vehicle mass estimation system 有权
标题翻译：递归车辆质量估计系统
公开(公告)号：US06438510B2
公开(公告)日：2002-08-20
申请号：US09748050
申请日：2000-12-22
申请人： G. George Zhu , Dennis O. Taylor , Thomas L. Bailey
发明人： G. George Zhu , Dennis O. Taylor , Thomas L. Bailey
IPC分类号： G01G1903
CPC分类号： B60T8/172 , B60T2250/02 , G01G19/086
摘要： A method and apparatus is disclosed for recursively estimating vehicle mass and/or aerodynamic coefficient of a moving vehicle. The vehicle speed and push force data are collected and a segment of qualified data is then selected from the collected data. Newton's second law is integrated to express vehicle mass and/or aerodynamic coefficient in terms of vehicle push force and vehicle speed. This expression is then used in a recursive analysis of the qualified data segment to determine an estimated vehicle mass and/or aerodynamic coefficient.
摘要翻译：公开了用于递归地估计移动车辆的车辆质量和/或空气动力学系数的方法和装置。收集车速和推力数据，然后从收集的数据中选择一段合格数据。牛顿第二定律综合起来表示车辆推力和车速方面的车辆质量和/或空气动力学系数。然后将该表达式用于合格数据段的递归分析以确定估计的车辆质量和/或空气动力学系数。

4. 发明授权

US06167979A Dynamic speed governing of a vehicle 失效
标题翻译：车辆的动态调速
公开(公告)号：US06167979A
公开(公告)日：2001-01-02
申请号：US09087054
申请日：1998-05-20
申请人： Dennis O. Taylor , G. George Zhu
发明人： Dennis O. Taylor , G. George Zhu
IPC分类号： B60K3100
CPC分类号： B60K31/04 , B60W2050/021 , B60W2540/10 , B60Y2200/14
摘要： A vehicle that has a drive train with an internal combustion engine, a transmission, and a number of ground engaging wheels. An operator-adjustable throttle control is monitored to provide a position signal corresponding to position of the throttle control. A sensor provides an observed speed signal corresponding to speed of the vehicle and a controller responds to the position signal and the observed speed signal to generate a target speed signal and an error signal. The target speed signal corresponds to a desired speed of the vehicle and is generated from a predetermined relationship between vehicle speed and throttle control position in accordance with the position signal. The error signal corresponds to a difference between the target speed signal and observed speed signal. The engine responds to the error signal to provide the desired vehicle speed for all operating speeds of the vehicle including a stopped or idle condition.
摘要翻译：具有内燃机，变速器和多个地面接合轮的传动系的车辆。监控操作员可调节的节气门控制，以提供对应于节气门控制位置的位置信号。传感器提供对应于车辆速度的观察速度信号，并且控制器响应于位置信号和观察到的速度信号以产生目标速度信号和误差信号。目标速度信号对应于车辆的期望速度，并且根据位置信号从车速和节气门控制位置之间的预定关系产生。误差信号对应于目标速度信号和观察速度信号之间的差。发动机响应于误差信号，为车辆的所有运行速度提供所需的车速，包括停止或空转状态。

5. 发明授权

US06728380B1 Adaptive noise suppression system and method 有权
标题翻译：自适应噪声抑制系统及方法
公开(公告)号：US06728380B1
公开(公告)日：2004-04-27
申请号：US09265805
申请日：1999-03-10
申请人： G. George Zhu , Anupam Gangopadhyay
发明人： G. George Zhu , Anupam Gangopadhyay
IPC分类号： A61F220
CPC分类号： H04B15/02
摘要： A system and method for suppressing cyclic noise components of a sampled sensor signal generates an error compensation signal that is subtracted from the sampled sensor signal to produce a corrected signal. A moving average of the sampled sensor signal, or sensor error signal, is obtained that corresponds to an error signal free of the non-cyclic component. An adaptive noise compensation algorithm is implemented by a compensation module with a minimum number of multiplications. The compensation module relies upon a unit base vector having a length equal to the number of base functions used to represent the cyclic noise component of the sensor signal, or equal to the number of samples over the sampling interval of the cyclic noise. This base vector is multiplied by an adaptive gain, which is a function of the difference between the sensor error signal and a compensation signal output from the adaptive compensation module. A convergence gain module outputs a high gain or a low gain value that is multiplied by unit base vector to control the rate of convergence of the adaptive algorithm. An adaptive vector is the product of this multiplication, then passed through a one sampling period delay operator, and then combined as an inner product with the unit base vector to produce the adaptive compensation signal.
摘要翻译：用于抑制采样的传感器信号的循环噪声分量的系统和方法产生从采样的传感器信号中减去的误差补偿信号，以产生校正的信号。获得对应于没有非循环分量的误差信号的采样传感器信号或传感器误差信号的移动平均值。自适应噪声补偿算法由具有最小乘法次数的补偿模块实现。补偿模块依赖于具有等于用于表示传感器信号的循环噪声分量的基本函数的长度的单位基矢量，或等于循环噪声的采样间隔上的采样数。该基矢量乘以自适应增益，该自适应增益是传感器误差信号与自适应补偿模块输出的补偿信号之差的函数。收敛增益模块输出乘以单位基矢量的高增益或低增益值，以控制自适应算法的收敛速度。自适应向量是乘法的乘积，然后通过一个采样周期延迟算子，然后组合为具有单位基矢量的内积以产生自适应补偿信号。

6. 发明授权

US06424906B1 Closed-loop actuator control system having bumpless gain and anti-windup logic 有权
标题翻译：闭环执行器控制系统具有无扰动增益和防饱和逻辑
公开(公告)号：US06424906B1
公开(公告)日：2002-07-23
申请号：US09774425
申请日：2001-01-31
申请人： G. George Zhu , Mark W. Pyclik , Eric K. Bradley , Larry J. Brackney
发明人： G. George Zhu , Mark W. Pyclik , Eric K. Bradley , Larry J. Brackney
IPC分类号： F02D4304
CPC分类号： F02D35/0007 , F02D41/1401 , F02D43/00 , F02D2041/1409 , F02D2041/141 , F02D2041/1418
摘要： A closed-loop actuator control system includes a single PI controller for controlling one or more actuators to minimize an error between an engine operating parameter value and a reference parameter value. In multiple actuator systems, the control system of the present invention is operable to drive one actuator to its upper limit before transferring control to the next actuator. The proportional gain block of the PI controller preferably includes a bumpless gain feature operable to limit the rate of change of the proportional gain to thereby provide smooth gain scheduling. A feedforward block may optionally be included that preferably includes the bumpless gain feature. The actuator control system further includes anti-windup logic operable to disable the PI integrator if the actuator drive signal is upper or lower limit bounded and the error signal is greater or less than zero respectively, thereby creating dynamic saturation of the PI integrator.
摘要翻译：闭环致动器控制系统包括单个PI控制器，用于控制一个或多个致动器以最小化发动机操作参数值和参考参数值之间的误差。在多个致动器系统中，本发明的控制系统可操作以在将控制转移到下一个致动器之前将一个致动器驱动到其上限。 PI控制器的比例增益块优选地包括无扰动增益特征，其可操作以限制比例增益的变化率，从而提供平滑的增益调度。可以可选地包括前馈块，其优选地包括无扰动增益特征。致动器控制系统还包括防起搏逻辑，如果致动器驱动信号是上限或下限，并且误差信号分别大于或小于零，则可以使PI积分器无效，从而产生PI积分器的动态饱和。

7. 发明授权

US6167357A Recursive vehicle mass estimation 失效
标题翻译：递归车辆质量估计
公开(公告)号：US6167357A
公开(公告)日：2000-12-26
申请号：US65366
申请日：1998-04-23
申请人： G. George Zhu , Dennis O. Taylor , Thomas L. Bailey
发明人： G. George Zhu , Dennis O. Taylor , Thomas L. Bailey
IPC分类号： B60P5/00 , B60T8/172 , G01G19/08 , G01G19/03 , G01L5/00 , G01V9/00
CPC分类号： B60T8/172 , B60T2250/02 , G01G19/086
摘要： A method and apparatus is disclosed for recursively estimating vehicle mass and/or aerodynamic coefficient of a moving vehicle. The vehicle speed and push force data are collected and a segment of qualified data is then selected from the collected data. Newton's second law is integrated to express vehicle mass and/or aerodynamic coefficient in terms of vehicle push force and vehicle speed. This expression is then used in a recursive analysis of the qualified data segment to determine an estimated vehicle mass and/or aerodynamic coefficient.
摘要翻译：公开了用于递归地估计移动车辆的车辆质量和/或空气动力学系数的方法和装置。收集车速和推力数据，然后从收集的数据中选择一段合格数据。牛顿第二定律综合起来表示车辆推力和车速方面的车辆质量和/或空气动力学系数。然后将该表达式用于合格数据段的递归分析以确定估计的车辆质量和/或空气动力学系数。

8. 发明授权

US6002980A System and method for engine cylinder power diagnosis by cylinder(s) cut-off snap throttle engine acceleration tests 失效
标题翻译：发动机气缸功率诊断系统和方法通过气缸切断快门油门加速度试验
公开(公告)号：US6002980A
公开(公告)日：1999-12-14
申请号：US971071
申请日：1997-11-14
申请人： Dennis O. Taylor , Chuan He , Emma Sweetland , Albert E. Sisson , Yue Y. Wang , Eric K. Bradley , G. George Zhu , Steven G. Smith
发明人： Dennis O. Taylor , Chuan He , Emma Sweetland , Albert E. Sisson , Yue Y. Wang , Eric K. Bradley , G. George Zhu , Steven G. Smith
IPC分类号： G01M15/04 , G01M15/00
CPC分类号： G01M15/044
摘要： A system and method for measuring individual cylinder power contribution by cutting out individual cylinders of a multi-cylinder engine and performing a snap-throttle test on the engine. Engine speed versus time data is collected and stored during each snap-throttle test. This data is then used to calculate the power contribution provided by each cylinder using various methods, such as a least squares analysis of the speed data or by an analysis of the kinetic energy of the test engine.
摘要翻译：通过切割多缸发动机的各个气缸并对发动机执行快速节气门测试来测量单个气缸功率贡献的系统和方法。在每次快门油门测试期间，收集并存储发动机速度与时间数据。然后将该数据用于使用各种方法来计算每个气缸的功率贡献，例如速度数据的最小二乘法分析或通过对测试发动机的动能的分析。

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