摘要:
An object of the present invention is to provide an electric power steering apparatus that can detect failure of a current detector quickly and with less misdetection using torque oscillation from a torque sensor. When the number of times N an absolute value of a differential value of a torque command value Tref exceeds a predetermined threshold value dTq in a predetermined time Tmr has reached a predetermined number Nref it is judged that the current detector has failed.
摘要:
An object of the present invention is to provide an electric power steering apparatus that can detect failure of a current detector quickly and with less misdetection using torque oscillation from a torque sensor. When the number of times N an absolute value of a differential value of a torque command value Tref exceeds a predetermined threshold value dTq in a predetermined time Tmr has reached a predetermined number Nref it is judged that the current detector has failed.
摘要:
The present invention provides an excellent electric power steering apparatus in which torque ripple caused by a quantization error of a current control system generated in case of slow steering state and steering holding state, namely, vibration and noise on a steering wheel can be suppressed. A current controller in which a steady state gain of feedback control is a finite value is used so as to be capable of suppressing the vibration and noise. Further, according to the present invention, a smoothing filter is included in a current control system so that the quantization error is smoothed so that the torque ripple is suppressed.
摘要:
The present invention provides an excellent electric power steering apparatus in which torque ripple caused by a quantization error of a current control system generated in case of slow steering state and steering holding state, namely, vibration and noise on a steering wheel can be suppressed. A current controller in which a steady state gain of feedback control is a finite value is used so as to be capable of suppressing the vibration and noise. Further, according to the present invention, a smoothing filter is included in a current control system so that the quantization error is smoothed so that the torque ripple is suppressed.
摘要:
An image forming apparatus includes a printing unit configured to print an input print job including a plurality of pages, wherein, if it is determined that a remaining amount of a recording agent in a cartridge is less than or equal to a threshold value, the printing unit prints a portion of print data in the print job, temporarily stops printing, and displays a toner out message on a display unit to prompt a user to replace the cartridge, and repeats, if the user does not replace the cartridge after the toner out message is displayed, printing a portion of print data in the print job that is different from the print data that the printing unit has already printed, temporarily stopping printing, and displaying on the display unit the toner out message.
摘要:
[Problem]The present invention provides an electric power steering apparatus that is capable of obtaining a more safe and comfortable handling performance by that signal processing of road information and disturbances is performed to realize a easy tuning, and vibration absorption level for brake is improved by a filter and a gain unit considering a frequency characteristic and a decelerating acceleration.[Means for Solving the Problem]The electric power steering apparatus which provides a steering mechanism with a steering assist force comprises a reaction force detecting means for estimating or measuring a reaction force inputted into a rack shaft, a disturbance band extracting means for extracting a frequency band of disturbances to be removed from the reaction force and a decelerating acceleration calculating means for calculating a decelerating acceleration of a vehicle based on a velocity signal, and a reaction signal extracted by the disturbance band extracting means is varied in accordance with the decelerating acceleration, and a steering assist command value or a current command value is corrected by the varied reaction force signal.
摘要:
The present invention provides a control apparatus for an electric power steering apparatus comprises: a steering assist command value calculating section; a current control section that calculates a voltage command value; and a motor driving section that drives a motor based on the voltage command value, wherein an assist power from the motor is applied to a steering system, the control apparatus is characterized in that an SAT measuring section, that inputs an angular speed and an angular acceleration of the motor, the steering assist command value and the torque signal therein so as to estimate an SAT, is provided, and the SAT obtained by the SAT measuring section is feedbacked to the steering assist command value via a feedback section composed of a phase compensating section and a gain section.
摘要:
In a control device for an electric power steering system for controlling a motor on the basis of an auxiliary steering command value calculated from a steering torque generated in a steering shaft and a vehicle speed, and a current detection value of the motor that applies an auxiliary steering force to a steering mechanism, the device comprises a damping compensation unit that calculates a basic damping compensation value on the basis of a steering speed and adjusts the basic damping compensation value on the basis of an SAT estimated value and the steering speed, wherein an adjusted damping compensated value that is adjusted in the damping compensation unit is added to the auxiliary steering command value.
摘要:
There have been cases wherein the program itself does not operate normally and only continues to output the monitoring pulse so that racing cannot be detected, or due to electromagnetic waves or noise a pulse signal being outputted normally is measured erroneously and a mis-detection is made. In a control apparatus of an electric power steering system for, on the basis of a current command value computed from a current detected value of a motor and a steering assist command value computed on the basis of a steering torque arising in a steering shaft, controlling the motor, which applies a steering assist force to a steering mechanism, a control apparatus of an electric power steering system characterized in that it comprises a first control part and a second control part each inputting at least a torque signal, a vehicle speed signal, the motor current detected value and a motor terminal voltage, and the motor is controlled with the first control part and the second control part.
摘要:
An apparatus for conducting flash photographing by a camera capable of incorporating or setting therein a flashlight device and generating a trigger signal at full opening of a shutter, and a capacitor adapted to release electric charge stored therein in response to said trigger signal for a flash discharge tube to emit flash.