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    • 1. 发明授权
    • Azimuth determination apparatus
    • 方位测定装置
    • US4751783A
    • 1988-06-21
    • US57177
    • 1987-06-03
    • Katsuhiro InaYuji HirabayashiSusumu AkiyamaKazushi AkutsuKiyohumi Kage
    • Katsuhiro InaYuji HirabayashiSusumu AkiyamaKazushi AkutsuKiyohumi Kage
    • G01C17/28G01C17/38
    • G01C17/38
    • Disclosed is an azimuth determination apparatus attached to a motor vehicle for determinating the forward direction of the vehicle. The azimuth determination apparatus includes an azimuth sensor for generating orthogonal first and second signals indicative of the forward direction of the vehicle. Two azimuth vectors are obtained on the basis of the orthogonal first and second component signals, first components of the two azimuth vectors being maximum and minimum. The determination is made in terms of the fact that the difference between second components of the two azimuth vectors is below a predetermined value. In accordance with the determination, the orthogonal first and second component signals are corrected on the basis of said two azimuth vectors so that the accurate moving direction of the motor vehicle can be obtained irrespective of the remanence of the vehicle.
    • 公开了一种安装在机动车辆上的方位判定装置,用于确定车辆的前方。 方位确定装置包括用于产生指示车辆前进方向的正交的第一和第二信号的方位传感器。 基于正交的第一和第二分量信号获得两个方位向量,两个方位矢量的第一分量是最大和最小的。 根据两个方位向量的第二分量之间的差值低于预定值的事实进行确定。 根据确定,基于所述两个方位向量来校正正交的第一和第二分量信号,使得可以获得机动车辆的精确移动方向,而不管车辆的剩磁。
    • 7. 发明授权
    • Engine control event timing employing both crank angle rotation and time
measurements
    • 发动机控制事件定时采用曲轴转角和时间测量
    • US4553208A
    • 1985-11-12
    • US614138
    • 1984-05-25
    • Susumu AkiyamaKenzo ItoHiroyasu FukayaHaruhiko OgisoYuji HirabayashiTakahide Kawamura
    • Susumu AkiyamaKenzo ItoHiroyasu FukayaHaruhiko OgisoYuji HirabayashiTakahide Kawamura
    • F01P11/16F02D21/08F02D41/26F02P3/045F02P5/15F02B5/02F02P9/00
    • F02P5/1502F02D41/26F02P3/0456F01P11/16Y02T10/46
    • An engine control method generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with engine operating conditions. Angular pulses are generated each time the output shaft of the engine rotates a predetermined angular amount. These angular pulses are counted from the occurrence of a position pulse which is generated at a predetermined angular position of the output shaft of the engine. A central processor is employed to calculate a first angular position at which an electric device for the engine is to be controlled. The central processor also calculates a time interval between the first angular position and a second angular position at which one of the angular pulses is to be provided just before the first angular position. When the angular pulse counting reaches a value corresponding to the second angular position, fixed frequency clock pulses are then counted. When the calculated required time interval has passed as determined by counting the fixed frequency clock pulses, the electric device is controlled.
    • 通常适用于诸如点火系统,燃料喷射系统等的发动机的控制系统的发动机控制方法,其被控制为根据发动机的运行条件进行最佳的操作。 每当发动机的输出轴旋转预定角度量时产生角脉冲。 从在发动机的输出轴的预定角度位置处产生的位置脉冲的发生计数这些角度脉冲。 中央处理器用于计算要控制发动机的电气装置的第一角度位置。 中央处理器还计算在第一角位置和第二角位置之间的时间间隔,在第二角位置之间将在第一角位置之前提供角脉冲之一。 当角度脉冲计数达到对应于第二角度位置的值时,然后对固定频率时钟脉冲进行计数。 当通过计数固定频率时钟脉冲确定所计算的所需时间间隔时,电气设备被控制。
    • 10. 发明授权
    • Method and apparatus for controlling the duty cycle of an off-on type
valve by monitoring the history of the state of the valve
    • 通过监视阀状态的历史来控制接通型阀的占空比的方法和装置
    • US4476532A
    • 1984-10-09
    • US409349
    • 1982-08-18
    • Susumu AkiyamaKenzo ItoHiroyasu FukayaHaruhiko OgisoYuji HirabayashiTakahide Kawamura
    • Susumu AkiyamaKenzo ItoHiroyasu FukayaHaruhiko OgisoYuji HirabayashiTakahide Kawamura
    • F01P11/16F02D21/08F02D41/26F02P3/045F02P5/15F02M7/16F02B5/02F02M9/04
    • F02P5/1502F02D41/26F02P3/0456F01P11/16Y02T10/46
    • An engine control method generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with the engine operating conditions. In this method, an operation starting timing and an operation ending timing of the control system, e.g., in the case of the ignition system, an ignition coil energization starting timing and an ignition timing (an energization ending timing) are computed at each of predetermined computing cycles, and the latest computed ignition timing, for example, which is computed after the coil energization has been started further taking into consideration of the actual coil energization timing and a minimum required energization period is compared with an ignition timing computed in the preceding computing cycle, and a corrective computation of the latest computed ignition timing is carried out depending on the result of the comparison to obtain an optimum ignition timing. Also the history of the ON-OFF state of a bleed valve in an engine air supply system is monitored. The actual duty cycle of the valve is compared with a desired duty cycle to determine whether or not to open the valve for a succeeding time period.
    • 通常适用于发动机的控制系统的发动机控制方法,例如点火系统,燃料喷射系统等,其被控制为根据发动机的运行条件进行最佳的操作。 在该方法中,在预定的每一个时,计算控制系统的操作开始定时和操作结束定时,例如在点火系统的情况下,点火线圈通电启动定时和点火正时(通电结束定时) 计算周期以及最近计算的点火正时,例如,在已经开始线圈通电之后计算出的最新的计时点火正时,进一步考虑到实际的线圈通电定时,并将最小的所需通电周期与在前面的计算中计算的点火时间进行比较 并且根据比较结果进行最新的计算点火正时的校正计算,以获得最佳点火正时。 此外,还监视发动机空气供给系统中的排气阀的ON-OFF状态的历史。 将阀的实际占空比与期望的占空比进行比较,以确定是否在随后的时间段内打开阀。