41results about How to "Stable driving" patented technology

First positional information of a stage is measured using an interferometer system, for example, an X interferometer and a Y interferometer. At the same time, second positional information of the stage is measured using an encoder system, for example, one X head and one Y head. A coordinate offset is set by performing a moving average of the difference between the first positional information and the second positional information for over a predetermined measurement time, and the reliability of output signals of the encoder system is verified using the coordinate offset. In the case the output signals are determined to be normal, the stage is servocontrolled using the sum of the first positional information and the coordinate offset. Such servocontrol by a hybrid method makes it possible to perform drive control of the stage having stability of the interferometer and accuracy of the encoder together.

A lens barrel includes: a lens frame retaining at least one portion of the plurality of lens groups; a first lens cylinder supporting the lens frame inside thereof and including a plurality of cam followers on an outer circumferential section thereof; and a second lens cylinder including a mutually parallel plurality of cam grooves in an inner circumferential section thereof and storing the first lens cylinder therein in the collapsed state, the plurality of cam grooves are engaged with the plurality of cam followers and configured to advance and retire the first lens cylinder in a direction of an optical axis by a relative rotation of the first lens cylinder, the plurality of cam grooves have a first cam groove and a second cam groove, the plurality of cam followers have a first cam follower and a second cam follower, the first cam follower and the second cam follower are engaged with the first cam groove and the second cam groove, respectively, and the first cam follower and the second cam follower are disposed in positions mutually different relative to the direction of the optical axis.

A method of supplying power from a solar cell module to a load includes measuring the output of the solar cell module, and controlling a power converter having a preset duty ratio to start operating in accordance with the measured output. Additionally, a power supply apparatus and a power supply system include a solar cell module having at least one solar cell to absorb sunlight, a power converter which converts power output from the solar cell module and supplies the converted power to a load, and a driving controller which measures the output of the solar cell module and controls the power converter having a preset duty ratio to start operating according to the measured output. Thus, electrical stress on the power converter is significantly decreased even though incident solar energy and/or the load is largely varied, so that the power converter may be stably driven to output the power.

The invention discloses a control method adopted during passing through a third rail non-electric interval. The control method comprises the following steps that the working conditions of a vehicle are obtained; when the vehicle is under the traction or zero-position working condition, a nest step is executed; when the voltage reduction rate of a middle busbar of the vehicle is up to a preset reduction rate, disconnection of a high-speed circuit breaker is controlled; a traction invertor is controlled to disconnect a short-circuit contactor; when it is detected that the voltage of the middle busbar is recovered to reach a normal value, the high-speed circuit breaker is closed. The invention further discloses a control system used during passing through the third rail non-electric interval. In addition, the invention further discloses an electrical vehicle provided with the control system. By the adoption of the control method, the middle busbar of the vehicle is prevented from suffering from larger impact current, and it is effectively ensured that the vehicle smoothly pass through the third rail non-electric interval.

Disclosed are an LED lighting apparatus and a control circuit thereof which controls the brightness of a lamp including LEDs using a dimmer. The LED lighting apparatus and the control circuit use a starting current based on a rectified voltage, in order to supply a holding current to the dimmer in a state where a lamp including LEDs is turned off.

A lamp control device may include: a lamp including an LED module having a plurality of LED channels; a converter configured to receive a voltage corresponding to a turn signal, convert the voltage into an output voltage and internal voltage, and supply the output voltage to the LED module; and a controller configured to start counting a preset delay time when the internal voltage is supplied from the converter, and control the plurality of LED channels to sequentially light up at intervals of the delay time.

A motor driving device includes an analog to digital conversion circuit to which a speed command voltage instructing a rotation speed of a motor is inputted, and a microcomputer configured and programmed to generate a speed command having a pulse width which is changed according to the speed command voltage based on an output signal of the analog to digital conversion circuit. Further, the motor driving device includes a signal isolator configured to transmit the speed command between an input and an output while providing isolation between the input and the output, and a drive circuit configured to generate a driving signal in response to the speed command outputted from the signal isolator and to change the rotation speed of the motor.

An inkjet recording head for ejecting ink, having a plurality of piezoelectric sidewalls to form a plurality of ink channels; a piezoelectric bottom plate; and a plurality of electrodes All of the ink channels are divided into two or more groups of ink channels composed of ink channels between which at least one ink channel is sandwiched;

• • wherein an ink ejection operation is performed successively in a time-sharing mode for each of the group of ink channels, while satisfying the condition of |CTC+CTE|≦10 (%); where a crosstalk between ink channels in one group due to a compliance ratio of the sidewalls to the ink in the ink channel is CTC; and a crosstalk between ink channels in one group due to a leak of electric field caused by electric voltage applied to the electrodes is CTE.

Disclosed is a method of effectively controlling a vehicle power trunk/tailgate in a vehicle power trunk/tailgate control system by performing a synchronization procedure between the left and right spindles in a vehicle having a power trunk/tailgate. Since a speed difference is not generated between the left and right spindle motors, the power trunk/tailgate can be driven more stably.

The invention relates to rubber composition for a tyre belt layer and tyres prepared from the composition. The composition includes the components as following: 100 weight parts of natural rubber; and 0.1 to 10 weight parts of aromatic polyamide short fibers processed by the compound shown in the chemical formula 1 or hydrate and polysulfide of the compound. In the chemical formula 1, Me indicats an alkali metal, n is an integer from 1 to 10, and m is an integer from 1 to 6. According to the rubber composition for a tyre belt layer, indurence is guaranteed, simultaneously, over-heating of the belt layer in driving is inhibited, the service of tyres is increased, the rolling resistance is increased, and thereby stable high-speed and long-term driving is guaranteed.

The invention discloses a method for adjusting the brightness of a tunnel lamp. The tunnel lamp comprises a lamp base and a lamp body, wherein the lamp base is fixed to the wall close to a tunnel entrance, and the lamp body is arranged on the lamp base and connected with electric supply. The method comprises the steps that an illuminance sensor and a master controller are arranged; the lamp body is provided with n sets of LED lamps of different colors, and n is equal to or larger than 2; the illuminance sensor is arranged at the tunnel entrance and used for sensing illuminance data outside a tunnel and transmitting the illuminance data to the master controller; and the master controller adjusts the brightness value of each set of LED lamps according to the illuminance data, and accordingly all the LED lamps can obtain the needed illuminance after color mixing is completed. By the adoption of the method, the brightness of the tunnel lamp can be adjusted automatically according to the brightness of light rays outside the tunnel, a driver can rapidly adapt to the change of the brightness when driving into or out of the tunnel, and the occurrence rate of traffic accidents is decreased.

A grease composition includes alkylnaphthalene as base oil and a urea compound as thickening agent. The thickening agent is an alicyclic aliphatic diurea compound contained at a ratio of 4 mass % to 10 mass % based on the total mass of the grease composition. A pivot assembly bearing device is provided with rolling bearings filled with the above grease composition. A hard disk drive device is provided with a swing arm which is swingably supported by the pivot assembly bearing device.

The invention relates to a watercraft for transporting at least one person on a water surface, comprising an input device for providing a control instruction, wherein the control instruction depends on an input movement of the person and the input movement can be carried out during travel with the watercraft, furthermore comprising a control device for providing a change and thus a selective increase and decrease of the lift force as a function of the control instruction, furthermore having a transmission device for transmitting the control instruction from the input device to the control device, furthermore having a steering device for providing a change in direction of the watercraft taking place along the water surface as a function of a steering movement by the person, wherein a holding device is provided for enabling a supporting function for the person operating the watercraft, wherein the input movement can be carried out independently of the steering movement and/or the supporting function.

The invention discloses an adjustable-brightness tunnel lamp. The adjustable-brightness tunnel lamp comprises a lampholder and a lamp body. The lampholder is fixed to the wall near a tunnel portal, and the lamp body is arranged on the lampholder. An LED lamp is adopted for the lamp body and is connected with city power. The adjustable-brightness tunnel lamp further comprises a photoresistor connected between the LED lamp and the city power. The tunnel lamp structure can automatically adjust the illuminance of the tunnel lamp according to the difference of the brightness inside a tunnel and the brightness outside the tunnel, thus a driver can fast adapt to the change of the brightness, and the traffic accident rate is decreased.

The invention discloses a tunnel lamp. The tunnel lamp comprises a lamp holder and a lamp body, wherein the lamp holder is fixed on a wall near to a tunnel entrance, the lamp body is arranged on the lamp holder and is connected with a mains supply, the tunnel lamp also comprises an illuminance transducer and a master controller, the lamp body adopts n groups of LED lamps with different colors, n is more than or equal to 2, the illuminance transducer is arranged at the tunnel entrance and is used for sensing illuminance data outside a tunnel and sending the illuminance data to the master controller, the master controller is used for adjusting a brightness value of each group of LED lamps according to the illuminance data, so that required illuminance is obtained after all LED lamps are mixed. By the tunnel lamp structure, the illuminance of the tunnel lamp can be automatically adjusted according to light brightness outside the tunnel, so that a driver can quickly adapt to brightness change during going through the tunnel, and the occurrence rate of a traffic accident is reduced.

The invention relates to the technical field of vehicle assembly, in particular to an integrally-formed hub, comprising a hub body, wherein a mounting disc is mounted inside the hub body; a frameworkis fixedly connected between the hub body and the mounting disc; the hub body, the mounting disc and the framework are connected by integrally forming, and a bearing mechanism is mounted on the innerside surface of the mounting disc; and a reinforcing mechanism is arranged at the side end of the bearing mechanism and connected to the side end of the bearing mechanism. The reinforcing mechanism isarranged at the outer end of the bearing mechanism, so that when an axle is connected to the hub body through a bolt piece, the reinforcing mechanism sleeves the exterior of the bolt piece, and meanwhile, a fastener in a sleeving piece is screwed, so that the fastener can abut against the exterior of the bolt piece, the bolt piece is connected to the hub body and the axle more stably; and meanwhile, after the outer part of the hub body is disengaged from a bolt piece connecting nut, the axle is prevented from being directly separated from the hub body, thus improving the driving safety, and guaranteeing normal and stable traveling of a vehicle.

The invention relates to a method for reinforcing a river bank by utilizing dredger fill, belonging to the technical field of foundation treatment. The method provided by the invention comprises the following steps: firstly making a trapezoidal river bank foundation by utilizing steel bars; then respectively mixing dredger fill with cobblestone, quicklime, polymeric organic matters, coarse sand and medium sand, and then sequentially putting in a terrace river bank; and finally, planting vegetations on the reinforced river bank. Embodiments prove that the method reduces the cement content and saves the cost, and the material prepared by the method has an obvious reinforced effect; and by virtue of the design of the trapezoidal river bank, after the river bank is built for 3-5 days, a truck of which the weight is more than 2.5-3.5t can steadily run on the river bank.