218results about How to "Reduced controllability" patented technology

A rotating machinery includes a first control member for performing rectangular wave control by operating the switching devices of an inverter such that an on-state and an off-state occur once for one cycle period in electrical angle of a motor, a second control member for operating the switching devices on the basis of a magnitude relation between upper and lower limits of a predetermined hysteresis region and an actual current flowing through the motor, and a switching member for, when the actual current deviates from the hysteresis region while the rectangular wave control is undertaken, switching the control to an instantaneous current value control performed by the second control member.

A secure gateway is disclosed which facilitates communication between a first network and a second network through an intermediate network. The secure gateway, when operated in conjunction with at least one other secure gateway, supports secure peer to peer connectivity with integral security features such as mutual authentication, authorization specific access, and end to end auditing. An authorized service can be served securely through this gateway, across the open network, to a known requester, without fear of compromising the security or privacy of the server's or requesters networks.

A strategy is provided using feedback control algorithms to monitor and dynamically modify front and rear braking torque to maintain controllability in a vehicle that initially favors regenerative braking. Simple proportional-integral-derivative feedback controllers can be used. The controller can monitor wheel speed, lateral acceleration, yaw rate, and brake position to selectively activate non-regenerative braking independently for each individual wheel and regenerative braking in varying proportion based on at least one actual vehicle controllability value and at least one predetermined target value for controllability and optimization of energy recovery. Controllability factors can include predetermined longitudinal slip ratio, comparison of tire slip angle or yaw rate. For rear wheel drive configurations, the non-regenerative brakes can be applied to just one front axle wheel on the outside of a turn. For front wheel drive configurations, the non-regenerative brakes can be applied to just one rear axle wheel on the inside of a turn.

A powder particle shaping device includes a closed cavity capable of changing between multiple shapes as an external pressure changes, and the closed cavity compresses and moves powder particles with which the closed cavity is filled full while the shape changes. A powder particle shaping method is further provided, which includes a. filling a cavity full with powder particles to be shaped; and b. applying a varying external pressure to make the cavity change repeatedly between multiple shapes, thereby making the powder particles under compression move and be subject to friction, where the cavity is kept in a closed state during an effective processing process. The shaping device and method have highly controllable shaping processing intensity of powder particles and stable processing strength, and thus are applicable to shaping and pulverization of various powder particles, and also applicable to pulverization and further shaping processing of dispersed agglomerates.

An apparatus for controlling automatic stop / restart of an engine, includes: an automatic-stop / restart-control-unit which stops / restarts the engine; a brake-pressure-detection-unit which detects brake pressure in a brake system and controls the brake pressure to perform anti-skid control; a first-determination-unit which determines whether the brake pressure is not less than a first-threshold; a second-determination-unit which determines whether the brake pressure is not less than a second-threshold larger than the-first threshold; a stop-allowing-unit which allows the automatic-stop / restart-control-unit to stop the engine while the engine operates, when the first-determination-unit determines that the brake pressure is not less than the first-threshold and the second-determination-unit determines that the brake pressure is less than the second-threshold; and a stop-inhibiting-unit which inhibits the automatic-stop / restart-control-unit from stopping the engine while the engine operates, when the-first-determination-unit determines that the brake pressure is less than the first-threshold and the second-determination-unit determines that the brake pressure is not less than the second-threshold.

In a hybrid vehicle including an engine, a motor, a generator, and a battery that is electrically connected to the motor and the generator, an ECU performs “battery-less travel control” enabling the vehicle to travel when a fault occurs in the battery by disconnecting the battery from an electrical system including the motor and the generator and driving the motor using power that is generated by the generator using the power of the engine. When the battery-less travel control is underway and a vehicle speed V exceeds a vehicle speed limit Vsh, the ECU implements a vehicle speed limitation. As a result, a control mode of the motor is less likely to shift to a rectangular control mode during the battery-less travel control.

This invention involves structure and fabrication method of a black silicon-based MEMS thermopile IR detector. The high-performance black silicon-based MEMS thermopile IR detector includes a substrate; a releasing barrier band on the substrate; a thermal isolation cavity constructed by the releasing barrier band; a black silicon-based IR absorber located right above the thermal isolation cavity; a number of thermocouples are set around the lateral sides of the black silicon-based IR absorber. The thermopiles around the black silicon-based IR absorber are electrically connected in series thus to form a thermopile. Metallic electrodes are located beside the electrically-connected thermopiles for signal output. The cold junctions of the thermopile are connected to the substrate through the first thermal-conductive-electrical-isolated structures, the heat conductor is located at the lateral sides of the thermal isolation cavity. The hot junctions of the thermopile are in contact with the IR absorber through the second thermal-conductive-electrical-isolated structures, and the second thermal-conductive-electrical-isolated structures are located above the releasing barrier band. The structure of such detector is simple, and it is easy to implement and can also be monolithicly integrated. Such detector has high responsivity and detection rate, and is CMOS-compatible, thus can be used widely in a safe and reliable manner.

A method is provided for forming high-appearance multi-layer coating films by sequentially providing an undercoating film with a water-based intermediate coat and a topcoat while controlling the imbibing or inversion at each interface between the respective coating films. The method comprises forming an intermediate coat using a water-based intermediate coating, a metallic base coat using a water-based metallic base coating and a clear coat using a clear coating in that order on a substrate provided with an electrodeposited coat wherein the water-based intermediate coating contains an aqueous dispersion of amide group-containing acrylic resin particles having a particle diameter of 0.01 to 1.0 mum as obtained by emulsion polymerization of an amide group-containing, ethylenically unsaturated monomer with another ethylenically unsaturated monomer or monomers or monomers.

The invention discloses a method of manufacturing a flexible micro membrane surface stress biosensor based on a nano conductive material. Particularly, a simple method is used for combining the nano conductive material and a flexible substrate, and the sensitivity and the telescopic performance of the stress sensor are further improved. Firstly, a flexible material (such as PDMS) is used as a raw material to make a flexible template with a groove; then, the nano conductive material (such as carbon nanotubes or silver nanowires) is used for filling the groove in the template; electrodes are led out from two ends of the filled nano conductive material; and finally, a flexible polymer material (such as PDMS) is used for fixing the nano material and the electrodes at the upper layer, and the structure stability is enhanced (the step can be omitted according to actual demands). The method of the invention has the advantages that the process is simple; the cost is low; the controllability is strong; the manufactured flexible stress sensor based on the nano conductive material is high in sensitivity, high in stability and good in flexibility; and possibilities are provided for realizing miniaturization, low cost and batch production.

The invention is intended to provide a downhill speed control system which employs a method of setting a target vehicle speed in advance, thereby improving controllability when a vehicle runs down a slope, and giving an operator improved operability in setting of the target vehicle speed. Brakes are controlled so that, when the vehicle runs down the slope, an actual vehicle speed is matched with a target speed set by a switch which can set the target speed by selectively or continuously changing plural preset speeds. Also, control constants for PID control are modified depending on settings of a downslope gradient setting switch and a load setting switch. When an acceleration computed from the actual vehicle speed is larger than a target acceleration, the strength of applied brake is increased.

A control apparatus controlling a rotating machine includes a signal output unit that outputs an excitation signal to a resolver used for detecting a rotational angle of the rotating machine; a demodulation unit that demodulate a signal related to the rotational angle based on a detection of a modulated signal and the excitation signal so as to output a demodulated signal; a filter that eliminates higher harmonics in the demodulated signal outputted by the demodulation unit so as to output a calculated angle of the rotational angle; and an operating unit that controls a switching element included in a DC-AC conversion circuit to be ON and OFF based on the calculated angle of the rotational angle outputted by the filter, so as to control the rotating machine with an output voltage of the DC-AC conversion circuit supplied to the rotating machine.

This drive control device (10) controls the drive of the present vehicle on the basis of a predicted course which is a prediction value of a drive course of the present vehicle. The drive control device (10) compares the movement trajectory of a preceding vehicle and the position of a stationary object provided along the road, and determines whether or not the movement trajectory is along the shape of the road. The movement trajectory is found valid if it is determined that the movement trajectory is along the shape of the road, and the movement trajectory is found invalid if it is determined that the movement trajectory is not along the shape of the road. The predicted course of the present vehicle is calculated on the basis of the valid movement trajectory.

A control device has a unit for determining a controlled phase of a controlled voltage outputted from an inverter to a generator according to a difference between a target torque and an estimated torque of the generator, a unit for calculating an instructed vector norm of the controlled voltage from the target torque, an electrical angular speed of the generator and parameters indicating characteristics of the generator, a unit for correcting the instructed norm to an adjusted vector norm such that a phase of current flowing through the generator in response to the controlled voltage set at the controlled phase and the adjusted norm is controlled to a phase of an instructed current determined from the target torque, and a unit for controlling the generator by controlling the inverter to output the controlled voltage set at the controlled phase and the adjusted norm to the generator.

A method of inspecting aircraft for evidence of stress fracture and other external abnormalities comprising: (a) identifying an aircraft surface to be inspected; (b) determining if the surface to be inspected is visually impeded by a coating compound selected from the group of compounds including paint, topcoats, and primers; (c) if present removing all visually impeding compounds identified in (b); (d) inspect the aircraft surface identified in (a); (e) identify and procure adhesive tape patch with properties generally consistent to those demonstrated in 3M product 8681 HS Polyurethane Protective Tape; and, (f) applying the adhesive patch of (e) over the inspected aircraft surface.

A transistor using an oxide semiconductor film is provided, the transistor having a small parasitic capacitance and including a back-gate electrode with a high controllability of threshold voltage. In the transistor using an oxide semiconductor film, the back-gate electrode overlaps with a drain electrode and does not overlap with a source electrode. By providing the back-gate electrode so as to overlap with the drain electrode and not to overlap with the source electrode, the operation speed of the transistor can be increased without decreasing the controllability of threshold voltage of the transistor as compared with the case where the back-gate electrode is provided so as to overlap with both the drain electrode and the source electrode.

The invention provides an intelligent controllable bearing and a method for controlling rotor vibration. The bearing comprises an excitation system, a bearing block, a bearing shell, a bearing bush and a floating ring. Magnetorheological fluid is adopted as a lubricating agent. After the magnetorheological fluid is supplied, the shaft neck and the inner surface of the floating ring form a lubricating oil film, namely, an inner oil film, and the outer surface of the floating ring and the bearing bush form a lubricating oil film, namely, an outer oil film. The property of the magnetorheological fluid is changed by the magnetic field generated by the excitation system, the property of the lubricating oil films is further changed, and intelligent behaviors of the bearing are achieved. The floating ring rotates at the speed lower than that of a rotary shaft. By means of the external magnetic field, stiffness and damping characteristics of the bearing are changed, so that vibration control of a rotor is achieved. The method is suitable for rotor occasions sensitive to vibration, and semi-active control over a rotor system can be easily achieved.

The invention involves structure and fabrication method of a high performance IR detector. The structure comprises a substrate; a releasing barrier band on the substrate; a thermal isolation chamber constructed by the releasing barrier band; a black silicon-based IR absorber located right above the thermal isolation chamber and the black silicon-based IR absorber is set on the releasing barrier band; a number of thermocouples are set around the lateral sides of the black silicon-based IR absorber. The thermopiles around the black silicon-based IR absorber are electrically connected in series. The cold junctions of the thermopile are connected to the substrate through the first thermal-conductive-electrical-isolated structures as well as the heat conductor under the first thermal-conductive-electrical-isolated structures. The hot junctions of the thermopile are in contact with the IR absorber through the second thermal-conductive-electrical-isolated structures, and the second thermal-conductive-electrical-isolated structures are located above the releasing barrier band. The structure of such detector is simple, and it is easy to implement and can also be monolithicly integrated. Such detector has high responsivity and detection rate, and is CMOS-compatible, thus can be used widely in a safe and reliable manner.

A situation where a medical device is outside a region suitable for guidance control thereof can be easily coped with. Included are a medical device provided with a magnet; a guiding unit (5X-1, 5X-2, 5Y-1, 5Y-2, 5Z-1, 5Z-2) that forms a control magnetic field for guidance control of the medical device, inside a prescribed control area; a detection unit (7Y-1, 7Y-2) that detects positional information of the medical device; and a computational unit that judges that the medical device has gone outside the control area on the basis of an output from the detection unit (7Y-1, 7Y-2) and calculates a direction for returning the medical device to the control area, wherein a signal-waveform calculating unit (21) stops forming the control magnetic field when the medical device is outside the control area.

The invention relates to a method for preparing a high-performance R-Fe-B system sintering magnetic body. According to the method for preparing the high-performance R-Fe-B system sintering magnetic body, due to the fact that heavy rare earth powder R<2> or R<2>X is added to powder composed of R<1>-Fe-B-M alloy, the purpose of enrichment of a heavy rare earth element on grain boundaries is achieved, after forming of the powder is accomplished in a pressed mode, pressure is exerted on the powder to enable the powder to reach a preset density through a pressure sintering device in a state with a temperature smaller than a normal sintering temperature, and the added heavy rare earth elements is made to scatter on the areas of the grain boundaries. The method for preparing the high-performance R-Fe-B system sintering magnetic body has the advantages that due to the fact that the heavy rare earth element of a small amount is added, coercive force of the magnetic body is obviously improved under the premise that reduction of remanence is small, production efficiency is high, and the method for preparing the high-performance R-Fe-B system sintering body is not limited by the size of the magnetic body.

A steerable stylet for a medical implantable lead has an inner lumen, into which the steerable stylet is insertable for navigating a distal end of the medical implantable lead to the desired location for attachment to tissue. The steerable stylet comprises a wire, a tube and an actuator. By means of the steerable stylet, the distal portion of the lead may be bent in desirable degree and, when the medical implantable lead is bent, the distal portion of the medical implantable lead is pivotal by means of the actuator to which the proximal end of the wire is non-rotatably connected. The tube is connected to the actuator by means of a torque limitation device which, when exceeding a predetermined torque force, will disconnect the torque connection between the tube and the actuator. A method for manufacturing a steerable stylet for a medical implantable lead includes the step of connecting the stylet tube to the actuator by a torque limiting device as described above.

The invention discloses a preparation method of particle-reinforced wearable porous titanium. The preparation method comprises the following steps of: S1, sufficiently and uniformly mixing the titanium powder and the wearable material particle; S2, adding a pore-forming agent to the powder mixture, and sufficiently and uniformly mixing; and S3, pressing and forming; S4, heating up the pressed powder blank in a heating furnace, removing the pore-forming agent, and placing in a vacuum sintering furnace for sintering to obtain the particle-reinforced wearable porous titanium. The preparation method of the particle-reinforced wearable porous titanium has the beneficial effects as follows: the process is simple, the device requirement is low, the processing cost is lowered and the operation is convenient; the porosity and the pore size can be controllable; the added pore-forming agent is low in cost, and the pore of the porous titanium can be controlled well; the added wearable hard particle has the characteristics of high melting point, high hardness, good antioxidant capacity, good lubricity and wear resistance and the like, so that the comprehensive performance of the porous titanium is improved well; the prepared porous titanium is uniform in pore distribution, good in wear and corrosion resistance, good in process controllability, simple and low in cost.

A MGECU in a control device mounted on a vehicle has a feedback control section, a correction torque calculation section, an instruction torque calculation section. The feedback control section calculates a torque to be used for performing a feedback control of an actual rotation speed to follow a target rotation speed. The correction torque calculation section calculates a correction torque based on a change rate of the target rotation speed and inertia of a rotary body which includes the motor generator. When the target rotation speed is changed to decrease a difference between the target rotation speed and the actual rotation speed, the correction torque calculation section reduces the correction torque. The instruction torque calculation section adds the torque calculated by the feedback control section and the correction torque calculated by the correction torque calculation section in order to obtain the instruction torque to be used for the motor generator.

A memory cell of a DRAM is reduced in size by making the width of a bit line finer than the minimum size determined by the limit of resolution of a photolithography. The bit line is made fine by forming a silicon oxide film on the inside wall of a wiring trench formed in a silicon oxide film and by forming the bit line inside the silicon oxide film. The silicon oxide film formed in the trench is deposited so that the silicon oxide film has a thickness thinner than half the width of the wiring trench and in the fine gap inside the silicon oxide film is buried a metal film to be the material of the bit line.

The invention discloses a pipeline descaling and rock stratum fracturing device based on electro-hydraulic pulse shock waves, comprising a ground low-voltage control device, a transmission cable and an electro-hydraulic pulse shock wave transmitter. The invention generates available high-strength shock waves with repetition frequency to bombard a specific position of the pipeline or rock stratum so as to achieve the effect of pipeline descaling and rock stratum fracturing; the breakdown field strength of the liquid gap can be effectively reduced to improve the conversion efficiency of the electrical energy to the mechanical energy of the electro-hydraulic pulse shock wave so as to obtain a high-strength electro-hydraulic pulse shock wave; the transmitting cavity adopts a parabolic focusing cavity, and through refraction and reflection of the rotating parabolic cavity, the shock wave is focused in a preset direction and radiates outwards to act on the pipeline dirt or rock stratum while ensuring that the shock wave has no longitudinal component and does not will not damage the liquid within the pipeline and the pipeline sheath, so that the effect of pipeline descaling or rock stratum fracturing is improved after focusing. The invention has the advantages of effectively removing the pipeline dirt, fracturing the rock stratum and improving the permeability as well as high reliability, environmental friendliness and low cost.