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    • 1. 发明授权
    • Electronic control system for single and series throttle valves
    • 单节和节流阀电子控制系统
    • US5520146A
    • 1996-05-28
    • US398339
    • 1995-03-03
    • Davorin HrovatMichael FodorMinh N. Tran
    • Davorin HrovatMichael FodorMinh N. Tran
    • F02D9/02F02D11/10F02D41/00
    • F02D9/02F02D11/105F02D2009/0201F02D2011/102F02D2200/0402Y02T10/42
    • An electronic controller for automatically adjusting the position of a throttle valve in either a single valve or a series valve throttle mechanism. A primary controller (20) produces an output signal (18) suitable for directly operating the single throttle valve in a "drive by wire" throttle system. When used to position a valve (32) in a two-valve series throttle system, the other valve (34) being directly controlled by the accelerator pedal, a signal translation unit (30) is employed to modify the output signal (18) from the primary controller in response to the current setting of the accelerator-controlled valve (34) and values indicating the current air flow rate (Q.sub.1) and the intake manifold pressure (P.sub.m). The primary controller (20) and the signal translation unit are implemented using a conventional electronic engine control processor, with the signal translation being performed by table lookup operations (51-54).
    • 一种用于在单个阀或串联阀节流机构中自动调节节气门位置的电子控制器。 主控制器(20)产生适于直接操作单“节气门驱动”节流阀的输出信号(18)。 当用于将阀(32)定位在双阀系列节流系统中时,另一个阀(34)由加速器踏板直接控制,信号转换单元(30)用于将输出信号(18)从 响应于加速器控制阀(34)的当前设定的主控制器和指示当前空气流量(Q1)和进气歧管压力(Pm)的值。 主控制器(20)和信号转换单元使用传统的电子引擎控制处理器实现,信号转换由表查找操作执行(51-54)。
    • 3. 发明授权
    • Method and apparatus controlling cross-axis oscillations in a vehicle
traction controller
    • 控制车辆牵引控制器中的横轴振荡的方法和装置
    • US5515279A
    • 1996-05-07
    • US398824
    • 1995-03-06
    • Davorin HrovatMinh N. TransCraig J. Simonds
    • Davorin HrovatMinh N. TransCraig J. Simonds
    • B60K28/16B60T8/175B60T8/1764B60T8/32
    • B60T8/1764B60K28/16B60T8/175B60W2550/148
    • An electronic traction controller for a vehicle reduces oscillations between a pair of driving wheels which may occur when the the traction controller attempts to control wheel spin of the driving wheels on surfaces which have differing frictional resistances, such as roads partially covered by snow and ice. The traction controller estimates the coefficient of friction beneath each of the driving wheels, and if the frictional resistance of the surfaces beneath each of the driving wheels varies by more than a predetermined amount, or if only one wheel is spinning, a value indicative of the inertia torque of the driving wheel and powertrain combination is determined, and compared against a predetermined value. A slip error value for each of the driving wheels is generated, which is indicative of the difference between the actual rotational speed of the driving wheel and the desired rotational speed of the driving wheel. If the inertia torque is greater than the predetermined value then braking values for the driving wheels to control wheel spin are generated as a function of the slip error value. The braking values are generated such that a first braking value is generated for the driving wheel which has the higher rotational speed of the two driving wheels, and a second braking value is generated for the other driving wheel, with the second braking value resulting in a braking force which is proportional to the first braking value.
    • 用于车辆的电子牵引控制器减少了一对驱动轮之间的振荡,当牵引控制器试图控制驱动轮在具有不同摩擦阻力的表面上(例如被雪和冰部分地覆盖的道路)时可能发生的摆动。 牵引控制器估计每个驱动轮下方的摩擦系数,并且如果每个驱动轮下面的表面的摩擦阻力变化超过预定量,或者如果只有一个转轮旋转,则表示 确定驱动轮和动力系组合的惯性转矩,并将其与预定值进行比较。 产生每个驱动轮的滑移误差值,其表示驱动轮的实际旋转速度与驱动轮的期望旋转速度之间的差。 如果惯性转矩大于预定值,则作为滑移误差值的函数产生用于控制车轮旋转的驱动轮的制动值。 产生制动值,使得对于具有两个驱动轮的较高转速的驱动轮产生第一制动值,并且为另一个驱动轮产生第二制动值,其中第二制动值导致 与第一制动值成比例的制动力。
    • 9. 发明授权
    • Vehicle traction controller with engine and brake control
    • 车辆牵引控制器与发动机和制动控制
    • US5682316A
    • 1997-10-28
    • US461488
    • 1995-06-05
    • Davorin HrovatMinh Ngoc TranCraig John SimondsJohn Loring Yester
    • Davorin HrovatMinh Ngoc TranCraig John SimondsJohn Loring Yester
    • B60T8/175B60K28/16F02D9/02
    • B60T8/175
    • A vehicle traction controller includes engine control and brake control routines to improve vehicle traction. The engine control routine reduces average slip of driven wheels of the vehicle by retarding spark timing and by reducing air flow into the engine via an electronically controlled throttle. The engine control routine is entered if the average wheel speed of the driven wheels is above a predetermined threshold speed. Control of spark timing is performed by a Proportional-Differential (PD) control technique. The electronically controlled throttle is controlled by a Proportional-Integral-Differential (PID) control technique. The brake control routine operates to reduce the rotational speed of the driven wheel which has the highest rotational speed. The brake control routine is entered if one of the driven wheels has a rotational speed which is greater than a maximum desired speed and if the difference in speed between the driven wheels is greater than a maximum difference value. A PD control technique is employed to determine the amount of braking force generated by the brake control routine. Braking force generated by the brake control routine is gradually reduced when the rotational speed of each of the driven wheels falls below a threshold value.
    • 车辆牵引控制器包括发动机控制和制动控制程序,以改善车辆牵引力。 发动机控制程序通过延迟火花正时和通过电子控制节气门减少进入发动机的气流来减少车辆的从动轮的平均滑移。 如果从动轮的平均车轮速度高于预定阈值速度,则输入发动机控制程序。 火花定时的控制由比例微分(PD)控制技术进行。 电控油门由比例积分微分(PID)控制技术控制。 制动控制程序用于降低具有最高转速的从动轮的转速。 如果一个从动轮具有大于最大期望速度的转速,并且驱动轮之间的速度差大于最大差值,则进入制动控制程序。 采用PD控制技术来确定由制动控制程序产生的制动力的量。 当每个从动轮的转速低于阈值时,由制动控制程序产生的制动力逐渐减小。