摘要:
The object of the invention is to provide a low-priced engine control apparatus having a single CPU configuration which can be used for knocking detection and engine control as well, including: an A/D conversion unit which samples, at a predetermined cycle, analog signals of knocking detected and output from a knock sensor; an A/D converter for converting a sampled analog signal to a digital signal in a predetermined conversion time per A/D conversion; a frequency analysis unit which analyzes digital signals upon A/D conversion; a knocking judgment unit which judges the presence of knocking on the basis of a result of the frequency analysis; and a CPU which includes an ignition timing arithmetic unit which executes arithmetic calculation for controlling ignition timing corresponding to knocking on the basis of the judgment so as to ensure an optimum engine control in response to knocking. The predetermined cycle in A/D conversion unit is defined by a period of time which allows for the A/D converter to execute A/D conversion N times, with N being an integer greater than or equal to 2.
摘要:
A control processor has an output pattern generating circuit operating in cooperation with a free running timer, and a virtual OCR program for virtually realizing a large number of timer outputs by use of the output pattern generating circuit. Because more timer outputs than the actually incorporated timers are handled, the function of timer outputs is implemented with a higher degree of freedom and in a wider range of applications. For its enhanced function and availability, the control processor costs less.
摘要:
A vehicle control system provided with a plurality of sensors for detecting the condition of the vehicle, a vehicle control unit including a multiplexer, a programmable input signal matching module and a processor, and actuators for operating each part of the vehicle. The multiplexer and matching module are selected and switched in accordance with a sensor signal to be inputted. A plurality of sensor signals can be inputted through the switched multiplexer and matching module to the processor. Furthermore, the processor determines controls of vehicle operation on the basis of the inputted sensor signals and controls actuators in accordance with the determined controls.
摘要:
An electrical control unit for an automobile of which standby current is smaller. In an electrical control unit for an automobile having a microcomputer, an input circuit, a driver circuit, and a power supply circuit, which is started by a wake-up signal from the circuit other than the ignition switch even when the ignition switch of the automobile is cut off, the microcomputer is started by shifting the power supply circuit from an inert state to an active state to generate the voltage for operating the microcomputer, and the predetermined processing is executed.
摘要:
An electrical control unit for an automobile of which standby current is smaller. In an electrical control unit for an automobile having a microcomputer, an input circuit, a driver circuit, and a power supply circuit, which is started by a wake-up signal from the circuit other than the ignition switch even when the ignition switch of the automobile is cut off, the microcomputer is started by shifting the power supply circuit from an inert state to an active state to generate the voltage for operating the microcomputer, and the predetermined processing is executed.
摘要:
A semiconductor device comprises an embedded insulation layer 101 formed on a semiconductor substrate 100, plural power semiconductor elements 2, 3 formed on a semiconductor substrate 100 on the embedded insulation layer, a trench 4 formed on the semiconductor substrate and isolating between the power semiconductor elements, and an isolator 5 insulating and driving control electrodes of the power semiconductor elements, and the power semiconductor elements 2, 3 such as transistors can be used, being connected each other in series.
摘要:
In order to ensures a stable reduction of noise level at all times, in the steps of switching input voltage with a switching element 10, smoothing the voltage of rectangular wave obtained by switching with a reactor L and capacitor Cf and outputting it, the voltage obtained by dividing the output voltage is compared with the sawtooth wave output from a sawtooth wave generator 14 by a comparator 12. When the switching signal in response to the result of this comparison is applied to the switching element 10, the counter 16 is actuated synchronously with the vertex of the sawtooth wave to perform opening/closing operation of the switch SW1. The time constant of the time constant circuit comprising a R0 and C is adjusted according to whether a resistor R1 is present or not, and the signals of frequencies f1 and f2 coming out of the sawtooth wave generator 14 are sequentially switched to be sent to the comparator 12. The peak of the switching noise is diffused in the frequency range by sequential selection of switching frequencies, and noise level is reduced by diffusion of noise energy.
摘要:
A driving apparatus is provided including a current detecting device for detecting electric current flowing through elements such as a sensor, a heater and an actuator, and switching devices for controlling electric current through the elements. The number of electric current detecting devices is reduced by using the devices in common. Switching the switching devices on-and-off is repeated. The electric current flowing in the element, which is to be detected, is detected by separation from another electric current that flows in the other elements
摘要:
A duct includes a suction port being connected to a first separate duct from a first direction, an exhaust port being connected to a second separate duct from the first direction, and a passage formed to extend from the suction port to the exhaust port. At least one of the suction port and the exhaust port includes a first opening portion that is opened to incline to the first direction and second opening portions at both ends of the first opening portion, the second opening portions that are opened in a transverse direction to the first direction.
摘要:
A vehicle control system which can ensure high reliability, real-time processing, and expandability with a simplified ECU configuration and a low cost by backing up an error through coordination in the entire system without increasing a degree of redundancy of individual controllers beyond the least necessary level. The vehicle control system comprises a sensor controller for taking in sensor signals indicating a status variable of a vehicle and an operation amount applied from a driver, a command controller for generating a control target value based on the sensor signals taken in by the sensor controller, and an actuator controller for receiving the control target value from the command controller and operating an actuator to control the vehicle, those three controller being interconnected via a network. The actuator controller includes a control target value generating unit for generating a control target value based on the sensor signals taken in by the sensor controller and received by the actuator controller via the network when the control target value generated by the command controller is abnormal, and controls the actuator in accordance with the control target value generated by the control target value generating unit.