65 results about "Compensating movements" patented technology

An encoder-type measurement system is configured to measure a position dependent signal of a movable object, the measurement system including at least one sensor mountable on the movable object a sensor target object mountable on a substantially stationary frame, and a mounting device configured to mount the sensor target object on the substantially stationary frame. The measurement system further includes a compensation device configured to compensate movements and/or deformations of the sensor target object with respect to the substantially stationary frame. The compensation device may include a passive or an active damping device and/or a feedback position control system. In an alternative embodiment, the compensation device includes a gripping device which fixes the position of the sensor target object during a high accuracy movement of the movable object.

One embodiment includes a method of predicting a position of a target site inside a body using surrogates is provided. The method includes transforming surrogate measurements and target positions into different representations by applying an operator, establishing a special relationship between the transformed surrogate measurements and the transformed target positions, and continuously predicting the target position from the transformed surrogate measurements and the established special relationship.

A method for compensating movement of an image capturing apparatus is applied in a photographing mode whose exposure time is greater than the safe shutter time. The method includes the steps of: capturing a long exposure image under the desired exposure time and a short exposure image with an exposure time smaller than or equal to the safe shutter time, and recording a camera motion signal in the exposure time of the long exposure image. The image-shift signal is used to reconstruct the short exposure image and form a reconstructed image, and an image analyzing algorithm is utilized to extract the reconstructed image and the short exposure image of a different frequency component. Finally, different frequency components of the image are fused according to the specific ratios to produce a clear output image.

The method comprises the following steps: applying a watermarking function to motion vectors calculated by estimation of movement between images of a video signal; and generating the watermarked video signal by compensating movement with the aid of the watermarked motion vectors. The watermarking function is applied by: marking the coordinates of the selected motion vector in a space, certain portions of this space constituting a first zone and the other portions of this space constituting a second zone complementary to the first; assigning a binary value to each of the two zones; and where necessary, modifying the coordinates of the selected motion vector so that it is in the zone whose binary value corresponds to a bit of a marking key associated with the selected motion vector.

The invention relates to a graduation device for detecting the surface shape of an aspheric optical element, in particular to a graduation device for accurately controlling the displacement of a rotation angle. The invention provides a graduation device for accurately controlling the displacement of a rotation angle, which can feed back and compensate movement quantity and accurately control angular displacement in real time. The graduation device comprises a control system and a graduation device, wherein the control system is provided with an industrial personnel computer, an interface circuit board, a servo amplifier, a servo motor, an angular coder and a numeral display meter of the coder; and the graduation device is provided with a base, an upper bearing base, a main shaft, a motor base, a deep groove ball bearing, a main shaft synchronous pulley, a motor synchronous pulley, a synchronous belt, a rotary disk and a clamp.

The invention relates to a telescopic chute for charging coke ovens, comprising a vertical feed hopper and a telescopic bottom part that is suspended on a vertically adjustable lifting mechanism by means of a plurality of first swinging elements. A tubular intermediate piece is disposed between the feed hopper and the telescopic bottom part. Said intermediate piece is movably suspended on second swinging elements and surrounds the cross-section of the outlet of the feed hopper in such a way as to leave some clearance that allows for lateral compensating movements. The intermediate piece is equipped with an annular flange which is sealed on an annular surface of the feed hopper. The flange of the intermediate piece and the annular face of the feed funnel extend in an essentially horizontal direction and the telescopic bottom part surrounds a casing of the tubular intermediate piece. A first sealing element is arranged between the flange of the intermediate piece and the annular face of the feed funnel. The telescopic bottom part seals relative to the casing of the tubular intermediate piece by using a second sealing element. The first and the second sealing elements form a flexible pipe or film. The interior of the flexible pipe or the space is connected to a pressure source.

The invention provides a liquid static pressure movement platform which comprises a platform main body, a driving device and a position detection device; the platform main body comprises a sliding table, guide rails and a base; the guide rails are arranged on the base, and the sliding table is inlaid in the grooves of the guide rails; the driving device comprises a rotor, a stator and three oil distribution blocks; the stator is arranged on the base; one end of the rotor is inlaid in the groove of the stator, and the other end of the rotor is fixedly arranged on the lower surface of the sliding table; the three oil distribution blocks are arranged on the upper surface of the sliding table; the position detection device comprises a grating ruler and a reading head; the grating ruler is arranged on the side surface of the sliding table, and the scale surface of the grating ruler is jointed with the reading head; and the reading head is fixedly arranged on the guide rails. According to the liquid static pressure movement platform, because a linear motor is adopted to drive, the problem of hysterisis error in the transmission of a ball bearing lead screw is solved; and due to the position detection device for compensating movement errors, the movement precision of the platform is improved.

A device for height adjustment of an operating table (10), including a lifting carriage (40) which is movable relative to a chassis (38) of the operating table (10), including a primary guide (32, 33) having a first longitudinal axis (L1) about which the lifting carriage (40) is rotatable, including a secondary guide (34a) having a second longitudinal axis (L2), and including a guide means (36) which is connected to the chassis (38) of the operating table (10) and which has a contact area in which the guide means (36) contacts the secondary guide (34a) in a contact area of the secondary guide (34a). The primary guide (32, 33) and the secondary guide (34a) serve for guiding a lifting motion of the lifting carriage (40) within an adjustment range of the lifting carriage (40) parallel to the first longitudinal axis (L1), wherein a plane (E) extending perpendicular to the first longitudinal axis (L1) and through the guide means (36) has a first point of intersection (S1) with the first longitudinal axis (L1) and a second point of intersection (S2) with the second longitudinal axis (L2), and wherein the position (P1, P2) of the second point of intersection (S2) changes by a displacement distance (53) during the lifting motion of the lifting carriage (40) within the adjustment range thereof. The connection between the guide means (36) and the chassis (38) permits a complementing motion of the guide means (36) such that the contact area of the guide means (36) is shiftable by said displacement distance (53).

The invention relates to a hanging joint special for wave compensation of an A-type portal frame. The hanging joint is characterized by comprising a compensation mechanism, a winch, a rotary mechanismand an auxiliary mechanism. According to the hanging joint special for wave compensation of the A-type portal frame, an attitude sensor on a base of the A-type portal frame monitors precise values ofswing and displacement of a mother ship in real time and transmits the values to a controller, after calculating the compensation dosage, the controller controls all compensating hydraulic cylindersto cooperate to compensate movement of the mother ship, and thus equipment can be safely and stably lifted, lowered and recycled under the terrible ocean environment. According to the hanging joint special for wave compensation of the A-type portal frame, a manipulator can be lowered to the sea surface through telescopic rods, the manipulator can quickly hang hooks hung on a load-bearing table toa to-be-recycled unmanned submersible, then a mother ship towing system and the A-type portal frame are matched to conduct recycle, the consumed time is short, precision is high, and the recycling efficiency is greatly improved.

The invention discloses an active speed-adjustable intelligent pipeline plugging robot. The robot comprises a first parking sealing mechanism, a crawling mechanism, a second parking sealing mechanism, a pigging speed regulating mechanism and the like, the pigging speed regulating mechanism is located at the lowest end, and the second parking sealing mechanism is connected to the upper portion of the pigging speed regulating mechanism through a connecting rod. The crawling mechanism is connected between the first parking sealing mechanism and the second parking sealing mechanism through a connecting rod, a plugging mechanism conducts plugging and anchoring through slip opening and closing and rubber deformation, and the crawling mechanism is matched with a front plugging mechanism body and a rear plugging mechanism body through hydraulic pistons to conduct crawling movement. The pigging speed regulating mechanism controls the overall movement speed through rubber deformation and compensates movement abrasion of rubber. According to the robot, intelligent plugging of an oil and gas transportation pipeline can be achieved, the robot can smoothly pass through complex pipeline conditions through rebound of rolling wheels, pigging rubber can continuously and efficiently conduct pigging speed regulation, the robot can accurately move to a designated working point through the crawling mechanism, and rapid, safe and accurate plugging in the oil and gas transportation pipeline first-aid repair and maintenance operation is achieved.

A connecting apparatus for two offshore units includes a coupling element with two sets of couplings and resetting facilities that compensate movements between the two offshore units. The coupling element includes a frame connected with the offshore units by two sets of couplings in a manner allowing pivotal movement and rotation. At least one set of couplings includes a first and a second elongated element that are each connected with both the frame and an offshore unit via constructions allowing pivotal movement and rotation. The resetting facilities include a first and a second resilient element that are each stationary connected with the offshore unit and force either the first or the second elongated element to a position extending substantially vertically downwards.