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公开(公告)号：US4751783A
公开(公告)日：1988-06-21
申请号：US57177
申请日：1987-06-03
CPC分类号： G01C17/38
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4669306A
公开(公告)日：1987-06-02
申请号：US743492
申请日：1985-06-11
CPC分类号： G01F1/6986 , G01F1/6983
摘要： A heat generating element having a thermal characteristic such that its resistance varies in response to changes in temperature is provided in the intake pipe of an engine. A heating power, the voltage of which is set by a reference voltage source, is supplied to the heat generating element via a transistor. The supply of this heating power is controlled by a start pulse signal periodically generated by a set flip-flop circuit when the ignition switch is on. When the heat generating element reaches a predetermined temperature, the supply is cut off by the flip-flop circuit. A measurement signal having a pulse width corresponding to the time period of heating power supply is generated from the flip-flop circuit. The opening of the ignition switch is detected and a one-shot multivibrator is driven to produce a burn-off signal having a pulse width to which the burn-off period corresponds. This burn-off control signal turns the transistor on and heating power is supplied to the heat generating element and the voltage of the reference power source is reduced so that the voltage of the heating power is switched to a low level.
摘要翻译： 在发动机的进气管中设置具有热特性使得其电阻随温度变化而变化的发热元件。 其电压由参考电压源设定的加热功率通过晶体管提供给发热元件。 当点火开关接通时，通过由设置的触发器电路周期性地产生的起动脉冲信号来控制该加热功率的供应。 当发热元件达到预定温度时，电源被触发器电路切断。 从触发电路产生具有与加热电源的时间段对应的脉冲宽度的测量信号。 检测点火开关的打开，并且驱动单稳态多谐振荡器以产生具有燃烧时间对应的脉冲宽度的燃烧断开信号。 该熄火控制信号使晶体管接通，向发热元件供给加热电力，降低基准电源的电压，使加热电力的电压切换为低电平。
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公开(公告)号：US4596138A
公开(公告)日：1986-06-24
申请号：US721182
申请日：1985-04-08
申请人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
发明人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
CPC分类号： G01F1/6986 , F02D41/187 , G01F1/6983
摘要： The intake airflow rate supplied to an internal combustion engine is measured and an obtained airflow rate measurement signal is used for detecting the operating state of the internal combustion engine. The internal combustion engine is electronically controlled, and an airflow rate measuring unit includes a heat-generating element having a temperature-resistance characteristic. A heating current which rises in correspondence with a signal synchronous with rotation of the engine is supplied to the heat-generating element. The heating current is controlled to rise when the heat-generating element is heated to a predetermined temperature, and the heating current duration indicates the airflow rate measurement signal. A burn-off command signal is generated so as to burn off dust attached to the heat-generating element. The command signal is used to generate a periodic signal having a preset effective duration. The pulse signal sets a continuous supply of the heating current to the element for the pulse duration, so that the heat-generating element is heated to a temperature for burning off dust attached thereto.
摘要翻译： 测量供应到内燃机的进气流量，并且使用获得的气流速率测量信号来检测内燃机的运行状态。 内燃机是电子控制的，气流量测量单元包括具有耐温特性的发热元件。 对应于与发动机的旋转同步的信号上升的加热电流被供应到发热元件。 当发热元件被加热到预定温度时，加热电流被控制上升，加热电流持续时间指示气流速度测量信号。 产生燃烧命令信号，以便燃烧附着在发热元件上的灰尘。 命令信号用于产生具有预设有效持续时间的周期信号。 脉冲信号使脉冲持续时间内的元件的加热电流连续供给，从而将发热元件加热至附着于其上的灰尘的温度。
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公开(公告)号：US4004241A
公开(公告)日：1977-01-18
申请号：US598470
申请日：1975-07-23
申请人： Susumu Akiyama
发明人： Susumu Akiyama
摘要： A feedback amplifier including a first and a second amplifier section comprises an autotransformer winding connected between common terminals of the respective amplifier sections and across a feedback circuit. A terminating impedance is connected between the output terminal of one of the amplifier sections and the autotransformer winding at a point nearer to its point of connection to the other amplifier section common terminal. Another terminating impedance is connected between the other amplifier section output terminal and the autotransformer winding at another point nearer to its point of connection to the common terminal of the above-mentioned one amplifier section. The terminating impedances may be used on the input side. They may be connected to the autotransformer winding at its points of connection to the respective common terminals, when the autotransformer may be dispensed with.
摘要翻译： 包括第一和第二放大器部分的反馈放大器包括连接在各个放大器部分的公共端之间并跨越反馈电路的自耦变压器绕组。 终端阻抗连接在放大器部分之一的输出端子和自耦变压器绕组之间的点处，在更接近其与另一个放大器部分公共端子的连接点的点处。 另一个终端阻抗连接在另一个放大器部分输出端子和自耦变压器绕组之间的另一个点处，该另一个点更接近与上述一个放大器部分的公共端子的连接点。 终端阻抗可以在输入侧使用。 当可以省去自耦变压器时，它们可以在其连接到各个公共端子的点处连接到自耦变压器绕组。
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