摘要:
In a speed control system for vehicles, a speed difference calculation circuit calculates an absolute value of a time difference between a predetermined period of time corresponding with a desired speed and an instant period of time corresponding with the actual speed, an acceleration calculation circuit calculates an absolute value of a time difference between the respective instant periods of time, and a correction signal generator calculates a sum of the absolute values in consideration with the actual speed when each sign of the calculated time differences is positive or negative and calculates a difference between the absolute values in consideration with the actual speed when respective signs of the calculated time differences are opposite to each other. The signal generator selectively produces correction signals related to the calculated sum and the calculated difference. A distribution circuit produces a control signal in response to the respective correction signals, and an actuator controls the opening angle of the engine throttle in response to the control signal.
摘要:
A vehicle speed control method comprises the steps of calculating a time difference between a predetermined period of time corresponding with a desired speed and the actual period of time corresponding with the actual vehicle speed, calculating a time difference between the respective actual periods of time, detecting each value of the calculated time differences in its low resolution related to a predetermined low speed range when the actual period of time represents a value in the predetermined low speed range, detecting each value of the calculated time differences in its high resolution related to a predetermined high speed range when the actual period of time represents a value in the predetermined high speed range, and producing a correction signal related to one of the detected values such that an output signal is produced to actuate a control element so as to control the quantity of fuel supplied into a combustion engine.
摘要:
A vehicle speed control system includes a first generator for producing an operation signal upon closure of a set switch at a desired vehicle speed and receipt of a timing signal from a second generator responsive to the actual vehicle speed, the operation signal disappearing in response to one of the subsequent timing signals. A first calculator calculates a first time difference between predetermined and instant time periods respectively defined by the desired and actual vehicle speeds, and a second calculator calculates a second time difference between the respective instant time periods. A third generator produces a correction signal defined by the second time difference during generation of the operation signal and produces another correction signal defined by the sum or a difference of the time differences in relation to identical or opposite signs of the time differences after disappearance of the operation signal. A distribution circuit is responsive to one of the correction signals to produce an output signal relative to the sign of the second time difference such that an actuator controls an engine throttle opening angle.
摘要:
In a speed control system for an automotive vehicle, a speed-differential calculation circuit calculates an absolute value of a time difference between a predetermined period of time corresponding with a desired speed and an instant period of time corresponding with an actual vehicle speed, an acceleration calculation circuit calculates an absolute value of a time difference between the respective instant periods of time, a correction signal generator calculates a sum of the absolute values when each sign of the calculated time differences is positive or negative and calculates a difference between the absolute values when respective signs of the calculated time differences are opposite to each other, the correction signal generator selectively producing correction signals respectively representing the calculated sum and the calculated difference and ceasing the correction signals when each of the calculated values is zero, and a distribution circuit produces a control signal therefrom in response to the respective correction signals, the control signal being applied to an actuator to control an angular position of the engine throttle.
摘要:
In a speed control system for vehicles, a speed-difference calculation circuit calculates an absolute value of a time difference between a predetermined period of time corresponding with a desired speed and the actual period of time corresponding with the actual speed, an acceleration calculation circuit calculates an absolute value of a time difference between the preceding and following actual periods of time within a limited range, and correction signal generator calculates a sum of the absolute values when each sign of the calculated time differences is positive or negative and calculates a difference between the absolute values when respective signs of the calculated time differences are opposite to each other. The signal generator selectively produces correction signals related to the calculated sum and the calculated difference. A distribution circuit produces a control signal in response to the respective correction signals, and an actuator controls the opening angle of the engine throttle in response to the control signal.
摘要:
An altitude difference measuring apparatus for measuring the difference between the altitudes at a first and second points on the basis of the barometric difference between the points, having an air pressure holding section with an electromagnetic valve for hermetrically containing an amount of air. At the first place an amount of the ambient air is held hermetrically in the air pressure holding section, and at the second place the barometric difference between the air pressure in the air pressure holding section and the ambient air pressure is converted into an electric signal, and in accordance with the electric signal the difference between the altitudes at the first and second points is indicated.
摘要:
A fuel consumption rate meter incorporating a fuel meter. The momentary amount of fuel consumed by a running vehicle is measured and the momentary fuel consumption rate is computed from the momentary amount of fuel consumed. The momentary amount of fuel consumed is integrated to give the total amount of the fuel consumed. The computed fuel consumption rate and the integrated fuel amount are indicated on the same panel.
摘要:
The remote control switch apparatus has an instruction switch provided on a steering wheel to project toward the inside of a passenger compartment away from an instrument panel of the car so as to indicate a driving condition. A transmitter is installed at the steering wheel to generate a radio wave signal or radiation signal in response to the instruction switch and a receiver, provided on the instrument panel, receives the radiation signal and generates a control signal.
摘要:
Method and apparatus for instantaneously measuring fuel consumption rate and indicating the instantaneously measuring distance traveled per unit fuel amount consumed, i.e., the instantaneous fuel consumption rate of a running vehicle. A signal representing the operating parameter of the internal combustion engine of the running vehicle measured in terms of the amount of fuel being consumed by the vehicle and another signal representing the running speed of the vehicle are separately integrated by first and second integrating circuits, whereby when the integrated value of the first integrating circuit reaches a predetermined value, the integrated value of the second integrating circuit is indicated.
摘要:
A distance meter for vehicles wherein the distance to be travelled from the place of departure to a destination is preset and on the way to the destination the distance travelled since the departure of the vehicle is subtracted from the preset travelling distance whereby to always display the remaining distance to the destination. The number of operations of the switch are counted to determine each preset digit. Its presetting circuit for presetting the travelling distance to a destination, computing circuit and display circuit each consists of an electronic circuit.