237results about How to "Stop precise" patented technology

Brushed DC electric motors have a rotor with commutator portions moving into and out of contact with brushes. As each of these contacts end, a back EMF force is induced into a main current supply signal. The number of these periodic forces can be counted and utilized to identify the position of the component being rotated by the DC electric motor. This method is relatively insensitive to environmental changes, and thus more accurate than the existing art.

At a time of stopping an internal combustion engine, inertia energy of the engine is kept constant, for example, by controlling a number of engine revolution constant, while controlling combustion of the engine. By utilizing the controlled inertia energy, the engine is stopped at a predetermined crank angle position. Since the engine is stopped at the predetermined crank angle position by utilizing the controlled inertia energy, a large amount of energy for controlling the stop position of the energy is not needed, and the energy needed for the stop control can be reduced. Since the inertia energy utilized for the stop control is always controlled in a predetermined state, the engine can be stopped at a proper position reliably each time.

It is an object of this invention to provide an active headrest which will not over-push the head of a passenger. For this purpose, the invention provides a headrest controller for moving a part (20A) or whole of a headrest (20) of a vehicle seat toward a head of the passenger to reduce the distance between the headrest (20) and the head in the horizontal direction by predicting or detecting a crash to the rear of the vehicle, including a head position detecting unit (11) for detecting a predetermined state of approach or state of contact of the headrest (20) to or with the head during the movement of the headrest (20) and a control circuit for stopping the headrest based on a detection signal from the head position detecting unit (11).

The invention provides an electric pressure rice cooker with an automatic pressure locking function, an automatic pressure locking function control method for the electric pressure rice cooker, and an auto looking device for the electric pressure rice cooker. The auto looking device includes an inner cooker forming hanging projections, an outer cooker, a cover and a pressure combination part including a locking wheel provided with a plurality of hanging grooves; in the state that the cover covers the outer cooler. The hanging grooves are joint with the hanging projections at a second position (i.e., a pressure locking state), and the hanging grooves releases the hanging projections at a first position (i.e., a pressure locking releasing state); a position sensing portion is used for sensing the locking wheel; the driving portion is used for providing a rotary force for allowing the locking wheel to rotate; and a control portion is used for controlling cooking actions and reducing the rotary force of the driving portion at a certain reduction ratio and finally allowing the locking wheel to stop rotation completely when it is sensed that the locking wheel rotates near the first position or the second position.

A full-automatic detecting system and method for a transformer. The system comprises a material delivery line; a feed device; a detection delivery line; insulating test devices; error detecting devices; a laser marking device; a discharge device; and a detection management system. The insulating test devices, the error detecting devices, and the laser marking device are sequentially arranged beside the detection delivery line. The material delivery line, the detection delivery line, and the devices work in coordination, to realize full-automatic detection of the transformer, avoid manual detection errors and improve the sorting accuracy.

An image forming apparatus includes a liquid jetting head for jetting liquid onto a recording medium and a movement mechanism for moving the liquid jetting head orthogonal to the recording medium. The movement mechanism includes translation cams movable in a direction orthogonal to the movement of the liquid jetting head, each of the translation cams including a cam gap into which a protruding part of the liquid jetting head is inserted. Each cam gap includes a parallel part and a slope part. The cap gaps of the translation cams are configured so as to constantly maintain a relationship in which when the protruding part is positioned in the slope part of the cap gap of one of the translation cams, the protruding part is positioned in the parallel part of the cap gap of the other translation cam.

The invention relates to a full-automatic camshaft assembling machine. The full-automatic camshaft assembling machine comprises a rack and a power distribution control cabinet arranged in the rack; arotating disk device is arranged on the middle portion above the rack; and a shaft feeding device, a cam vibrating feeding disk, a cam feeding device, a press-fitting device, a floating shaft pressingdevice, a laser welding device, a flaw detecting device and a discharging device in butt joint with carrier assemblies are sequentially arranged above the rack in the rotating direction of a rotatingdisk. According to the full-automatic camshaft assembling machine, by means of the shaft feeding device, a shaft is placed in the carrier assembly on the rotating disk device, and the carrier assembly rotates clockwise along the rotating disk and sequentially rotates onto the cam feeding device to perform cam feeding, onto the press-fitting device so as to press a cam into a matching groove of the shaft, onto the floating shaft pressing device to push down the shaft to be clamped with the matching groove, onto the laser welding device to perform laser welding on the matched portion of the shaft and the cam, onto the flaw detecting device to detect bruised damage and scratches, and onto the discharging device to perform discharging; and the assembling process of the cam and the shaft is completed, the positioning precision is high, and defective products are detected in time.

A driving unit and a battery-assisted bicycle include a stopping assist control without making a rider feel uncomfortable. The driving unit includes a crankshaft to which pedals are to be connected, a torque detector that detects a torque generated at the crankshaft, and an assist control stopping unit that stops an assist control based on an amplitude of a torque detected by the torque detector while the crankshaft rotates in a prescribed rotation angle range.

In a motor-driven shift position switching device, when the difference between a target position and the rotation position of a rotor has become smaller than a prescribed value in a motor feedback control, a transition is made to a deceleration control. A phase lead correction amount for correcting the phase lead of the current supply phase with respect to the rotor rotation phase is set in accordance with the rotor rotation speed. Thus, proper braking force suitable for the rotor rotation speed is exerted on the rotor and the rotor can be decelerated smoothly as it approaches the target position. Further, in the period when the current supply to the motor is kept off, the shift position switching determination ranges are set wider than in the period when the current supply to the motor is on.

Pneumatic tightening tools can be used for high speed assembly of critical bolts to precise loads by dynamically controlling the output power of the pneumatic tool during a tightening cycle using an electronically controlled air pressure regulator to reduce the tightening rate, or the load increase per impact for impact or impulse tools, to enable the tool to be stopped precisely at a specified stopping load or torque. For prevailing torque fasteners, the output power of the pneumatic tool is dynamically controlled to minimize the speed of rotation during rundown, to minimize the heating effects associated with such torque fasteners, and to then increase the power from the tool, as required, to provide the torque to reach the specified stopping load or torque. The maximum air pressure supplied to the pneumatic tool can be limited, depending on the expected torque required to tighten the fastener to the specified load or torque.

A detector detects positions of a moving body in a travel direction at a position shifted from a center of control of travel of the moving body in a direction different than the travel direction of the moving body. Positions of the center of control in the travel direction relative to the output of the detector is stored in a storage unit for at least a curved section of a travel route of the moving body, and the travel of the moving body is controlled by a controller, based on the positions of the center of control read out from the storage unit.

An automatic milky tea maker comprises a low-temperature preservation chamber, an icemaker case and a normal-temperature chamber. A guide rail box is arranged in front of the low-temperature preservation chamber, the icemaker case and the normal-temperature chamber. A sauce output device, a large fruit grain output device, a cover output device and a juice pump are arranged in the upper portion ofthe low-temperature preservation chamber. A full-automatic icemaker is arranged in the icemaker case, a cup discharger, a fructose output device, a powder output device and a stirring device are arranged in the upper portion of the normal-temperature chamber, the middle of the normal-temperature chamber is internally provided with a tea water and purified water outlet, the lower portion of the normal-temperature chamber is provided with a water barrel placement area, and a milky tea conveying platform is arranged in the guide rail box. The automatic milky tea has advantages that cup discharging, water agent feeding, powder feeding, sauce feeding, stirring, milk cover feeding and final outputting are all realized mechanically, so that unmanned milky tea making is realized; by design of different feeding types and feeding sequences, a refrigerator is designed for materials requiring refrigeration, an ice making component is provided aiming at different demands of cold and hot drinks, and accordingly different customer demands can be met.

A panhead which is capable of appropriately operating an image pickup device by a simple mechanism thereof. A fixed unit is set on a base of a camera-attached panhead. A pan rotation unit is supported on the pan fixed unit, for rotation within a plane parallel with the upper surface of the pan fixed unit. Two parallel-link mechanisms connect between a camera unit and the pan rotation unit and move the camera unit to a predetermined position in which a direction of an optical axis of the image pickup device is able to be maintained, depending on the use mode of the camera unit.

A vehicle including an engine, a tilting sensor configured to detect that a vehicle body of the vehicle has been tilted a predetermined angle or larger, a driving state sensor configured to detect a driving state of the vehicle using a component other than the tilting sensor, and a determiner configured to determine whether or not to stop the engine, based on a signal received from the tilting sensor, and a signal received from the driving state sensor.

The invention discloses a suspending automatic-patrol robot, and aims to provide a suspending automatic-patrol robot which can replace workers and save labor. The suspending automatic-patrol robot comprises a rail mechanism and a rail machine system and is characterized in that the rail machine system is matched with the rail mechanism, the lower side of the rail machine system is connected with a mechanical arm mechanism, the lower side of the mechanical arm mechanism is connected with a temperature picture monitoring system, and the rail machine system is connected with a wireless transmission system. The suspending automatic-patrol robot is mainly used for power security monitoring and control.

The invention relates to an automatic transfer device. Existence sensors are set for sensing whether workpieces are arranged on a motion component or not so as to control operation time of a power component, speed reduction sensors are set for enabling the motion component to reduce speed before the stop position and reduce inertia of the motion component during stopping so as to improve operation stability of the transfer device and letting the motion component to stay in the accurate stopping position, and stop sensors are set for controlling the stopping time of the power component so as to enable the motion component to stop in the stop position. The existence sensors, the speed reduction sensors and the stop sensors realize automatic control motion process of circulating of workpieces from the feed position to the discharge position and to the feed position again. Furthermore, the invention provides an automatic transfer method of the automatic transfer device.

An engine stopping section first selects, when an engine stop condition is satisfied, a power-generation braking mode in which a power-generation braking torque is applied to the engine by a power generation operation of the generator, to thereby apply the power-generation braking torque to the engine, and then selects a short-circuit braking mode in which a short-circuit braking torque is applied to the engine by short-circuiting each energization phase of an armature coil with a semiconductor switch and by causing a field current to flow through a field coil, to thereby apply the short-circuit braking torque to the engine.

The invention belongs to the technical field of transferring machines and discloses a rising and falling horizontal transferring machine which comprises a transferring machine support, a rising and falling moving assembly and a horizontal moving and plate conveying assembly. A layer limit switch is arranged on the transferring machine support. The rising and falling moving assembly drives a risingand falling moving framework through a three-phase asynchronous band-type brake motor. The rising and falling moving framework is dragged through a chain. The horizontal moving and plate conveying assembly comprises a horizontal moving device and a plate conveying device. The horizontal moving device is provided with a horizontal limit switch, and a horizontal moving direct-current speed reducingmotor drives a horizontal moving bottom plate. The plate conveying device is provided with a plate in-place switch, and a plate conveying direct-current speed reducing motor drives a pattern conveying belt to drive a tool plate. The rising and falling horizontal transferring machine is simple in structure and reliable in performance, and the problem of connection between single triple speed chains of an inlet and an outlet of an aging house and multi-layer triple speed chain in the aging house can be solved.

This invention provided a track mounted jumbo systerm. In this system, a primary coil (10) of a linear synchronous motor is arranged at the fixing side in the vicinity of a station, and a magnet row (48) of the linear synchronous motor is arranged at a stacker crane (20). A primary coil (42) of a linear induction motor is arranged at the stacker crane (20), and a secondary conductor (8) is continuously arranged between the stations at the fixing side. The power of the linear induction motor is obtained from a non-contact electricity receiving part (52) by supporting the weight of the stacker crane (20) by a traveling wheel (44), and by supporting swiveling forces acting from the linear induction motor and the linear synchronous motor by a guide roller (46). The primary coil (10) is operated in the vicinity of the station by detecting a magnet position in the magnet row (48), and stopped by detecting an absolute position of the stacker crane (20) with respect to the station by an ABS linear sensor (12).

A sheet processing apparatus which enables a sheet to be stopped at a target position with precision even when the sheet is stopped by moving a heavy unit such as a shift unit. A drive unit moves a moving unit so as to move a sheet, which is being conveyed, in a direction perpendicular to a conveying direction of the sheet. An output unit detects movement of the moving unit and output a signal in synchronization with movement of the moving unit. A control unit issues a stop instruction to the drive unit based on a delay time from when a start instruction to the drive unit is issued until when the signal in synchronization with the movement of the drive unit is output, and a target moving amount required for the moving unit to move to a target position.

A vehicle-mounted internal combustion engine controller is provided that can properly stop an internal combustion engine in accordance with an operational state no matter whether a vehicle body is inclined. The vehicle-mounted internal combustion engine controller comprises an inclination sensor for detecting vehicle body inclination; a mechanism for determining the operational state of a combustion engine; and a controller for stopping the operation of the combustion engine in accordance with a vehicle body inclination and an operational state. The cutoff mechanism stops the operation of the vehicle-mounted internal combustion engine when it is judged that a vehicle body inclination angle a detected by the inclination sensor is greater than a predetermined angle A for a greater or equal period of time as a threshold stop time T1, T2 setting, which varies with the operational state determined by the operational state sensor.