摘要:
A control device of an electric motor which can compatible high robust stability performance and a tracking performance and a designing method thereof. A feedback correction is obtained based on a detected motor rotation speed and a feedforward correction amount is obtained based on a calculated target torque by a controller of a microcomputer. The microcomputer commands torque control to an SR motor based on the feedback correction amount and the feedforward correction amount.
摘要:
An electric motor such as a driving source of an electric vehicle is controlled by the microcomputer 7. The microcomputer 7 calculates a target torque Req_trq according to a throttle opening degree α, and outputting induction values (a current instruction value I and a angle instruction value θ) obtained referring to a map MP based on the target torque Req_trq (a motor rotational number Nm and a battery voltage Vb), the microcomputer 7 performs a torque control of an SR motor 3. The motor rotational number Nm detected from the SR motor 3 is passed through a band pass filter 51. Passing by the band pass filter 51, a signal data of the extracted 0.1-50 Hz is executed a PD calculation process 52, the calculated corrected amount PD_out is subtracted from the target torque Req_trq.
摘要:
A controller K calculates a command torque by correcting the required torque w1 with a correction based on a motor rotation speed Nm, and controls an electric motor based on the command torque T. The command torque w1 is regarded as one content of an outside input W to the controller K. A difference between the rotation speed of the electric motor outputted by the actual model describing an actual response of the electric motor and another rotation speed of the electric motor outputted by a reference model describing ideal performance and vibration reduction is regarded as one content Z1 of controlled output Z from the controller K. Moreover, a characteristic variation depending on vehicle types and so on, a torque ripple, and a sensor noise are described by weight functions wm1, wm2 and wn. Then a pertubative output w2 and a sensor noise w3 are regarded as the remaining contents of the input W. An output of the weight function wm2 is regarded as the controlled output Z. The controller K is determined by solving H∞control problem that a transfer function between the outside input W and the controlled output Z is determined as an H∞norm of the transfer function to be smaller than a predetermined value.
摘要:
An object of the present invention is to provide a printed wiring board which does not require arranging signal lines oblique to the warp or weft threads constituting a substrate and is capable of reducing a difference in transmission rates between the signal lines. The present invention relates to a printed wiring board including: an insulating layer; and a signal layer including a set of at least two signal lines and disposed on one side of the insulating layer. A substrate is embedded inside the insulating layer in such a manner to be further from the signal layer than a center of the insulating layer in a thickness direction of the insulating layer is. The insulating layer has a laminated structure of a thick layer, the substrate, and a thin layer. A ratio of a thickness of the thick layer to a thickness of the thin layer is greater than five.
摘要:
An electric pump for supplying a hydrogen gas to a fuel cell includes a rotary shaft rotatably inserted through an electric motor, a transmitting member provided on one of an outer peripheral surface of the rotary shaft and an inner peripheral surface of the electric motor so as to be rotatable therewith, and a groove formed in the other of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the electric motor for the transmitting member to be inserted therein. The groove transmits a rotary torque of the electric motor to the rotary shaft by contacting an inner surface of the groove and the transmitting member and has an opening width along a rotary direction of the rotary shaft which is larger than the width of the transmitting member. The groove and the transmitting member produce an impact torque when the electric pump is started.
摘要:
To provide a pulverized toner excellent in the releasing ability and cleaning ability, and an image-forming apparatus for one-component developer, and a process cartridge using the pulverized toner. The pulverized toner contains a toner base particle containing at least a binder resin, a colorant, and a releasing agent, the mass ratio of the releasing agent to the binder resin is 3.0% to 6.0%, the adhesive force among the pulverized toners at 25° C. to 55° C. is 20 g to 80 g, and the pulverized toner is used for the image-forming apparatus for one-component developer containing the cleaning unit configured to dispose an elastic blade adjacent to the surface of the image bearing member so as to clean the surface.
摘要:
To provide a fuel injection system that can efficiently supply high pressure fuel to fuel injectors of an internal combustion engine, whose design and manufacture are made easy by simplifying its mechanical configuration, and which has excellent maintainability during repair and detachment.A fuel injection system for an internal combustion engine comprises: a cassette type pump that is attachable to and detachable from an internal combustion engine disposed with a cam and which pressurizes fuel to a high pressure and pressure-feeds the high pressure fuel by a plunger that reciprocally moves in accompaniment with rotation of the cam, and pressure-feeds the high pressure fuel; a common rail that accumulates the high pressure fuel that is pressure-fed from the cassette type pump and supplies the high pressure fuel with respect to plural fuel injectors; a pressure regulator that regulates the pressure inside the common rail; and pressure control means that controls the pressure regulator on the basis of the pressure value inside the common rail.
摘要:
Provided is an image forming apparatus including at least a latent image bearing member, a latent electrostatic image forming unit, a developing unit which includes at least a developing roller and a supply roller, and a transfer unit, wherein both of a diameter R (mm) of the developing roller and a diameter R′ (mm) of the supply roller are 12 mm or less; the toner contains at least a binder resin, a wax, and a colorant with the wax having a melting point of 75° C. or less; an amount of the wax exposed on a surface of the toner is 10 mg/g to 30 mg/g; and when a diameter (mm) of the developing roller is represented by R the toner has a torque T (mNm) satisfying the inequation, 20/R
摘要:
The present invention provides a developing device that allows for maintaining the conveyance amount of a toner within a certain definite range. A developing device 12 of the present invention is provided with a toner conveying unit 13 configured to convey a fist toner and a controlling member 15 configured to control the thickness of a toner layer formed with the first toner conveyed by the toner conveying unit 13, wherein a second toner provided with a charged amount per unit mass that differs from a charged amount per unit mass of the first toner is applied over the surface of the controlling member 15.
摘要:
A flux control apparatus includes an outlet pressure detector for detecting an outlet pressure of a fluid at an outlet of a fluid flow apparatus driven by a drive source for feeding the fluid from an inlet of the fluid flow apparatus and letting the fluid flow out from the outlet of the fluid flow apparatus, a drive amount detector for detecting an amount of drive of the drive source, an estimated flux-calculating apparatus for calculating a flux of the fluid flowing from the fluid flow apparatus as an estimated flux on the basis of the pressure of the fluid and the amount of drive, a control amount-calculating apparatus for calculating an amount of control for the fluid flow apparatus on the basis of the estimated flux and a target flux, and a control apparatus for controlling the drive source on the basis of the amount of control.