832results about How to "Prevent lock" patented technology

In one embodiment of the present invention, a method for adjusting a signal includes receiving an input data signal and communicating a first portion of the input data signal on a first path and a second portion of the input data signal on a second path. The method also includes applying a first offset compensation to the first path and a second offset compensation to the second path. The method further includes combining at least the first path and the second path to generate an output signal. The method also includes, using a clock signal, sampling the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal. The method further includes detecting a transition in value between two successive data values and determining a sampled boundary value between the two successive data values. The method also includes, based at least on the high or low value of the boundary value and on the high or low value of at least two data values arriving immediately before the boundary value, independently adjusting the first offset compensation applied to the first path and the second offset compensation applied to the second path.

A medical chair includes a seat supported by a base and actuators adapted to both tilt and lift the seat with respect to the base. A controller controls the actuators to both lift and tilt the seat as the seat moves from the sitting position to the standing position. The movement from the sitting position to the standing position assists in the egress of an occupant from the chair, while the movement from the standing position to the sitting position assists in the ingress of an occupant to the chair. A backrest on the chair remains substantially vertically oriented during movement between the sitting and standing position so as to provide more comfort to the occupant during the sit-to-stand or stand-to-sit movement. The backrest also moves in a manner that generally keeps the occupant's torso vertically aligned with his or her hips during this movement.

An improved vehicle brake system for controlling the frictional braking force and the regenerative braking force to be applied to a wheel of a vehicle. The brake system reduces the regenerative braking force to a predetermined force and keeps the regenerative braking force at the predetermined force before the start of anti-lock control. When the anti-lock control starts, the brake system decreases the regenerative braking force from the predetermined force. With this arrangement, it is possible to quickly eliminate a locking tendency of any wheel of the vehicle, thereby stabilizing the vehicle.

The invention discloses a hybrid power car braking coordinated control system and a control method thereof, aiming at overcoming the problem that regenerative braking moment and hydraulic braking moment of a hybrid power car in the prior art can not be controlled in a cooperative way. The system comprises an electronic braking maneuver subsystem, a coordinating controller (29), a hydraulic braking moment regulating subsystem and a regenerative braking moment subsystem; wherein, the coordinating controller (29) is respectively and electrically connected with the electronic braking maneuver subsystem, the hydraulic braking moment regulating subsystem and the regenerative braking moment subsystem. The coordinating controller (29) comprises a power control circuit (63), a memory (64), a coordinating controller slot (65), a sensor input signal processing circuit (67), a CAN signal processing circuit (68) and a central processing unit (CPU) (69) which is connected with all the parts by adopting a circuit connecting line (70). The invention also provides a method for coordinating and controlling the regenerative braking moment and the hydraulic braking moment.

In one embodiment of the present invention, a method for adjusting a signal includes applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a data signal before or after the distortion occurs to generate an output signal. The method also includes, using a clock signal, sampling the output signal to generate a plurality of data values and an error value, each data value comprising either a high value or a low value based on the sampling of the output signal, the error value indicating residue of the distortion based on the sampling of the output signal. The method further includes selecting one or more filter patterns from a set of a plurality of filter patterns, each filter pattern comprising a plurality of data values. The method also includes monitoring the output signal for one or more patterns of data values corresponding to the one or more selected filter patterns. The method further includes detecting a pattern of data values in the output signal corresponding to one of the one or more selected filter patterns. The method also includes adjusting the at least one of the loss compensation and the offset compensation applied to the data signal based on the error value.

A biparting transit vehicle door system operator. The operator includes a base for attachment to the mass transit vehicle and a motive power source connected to a transmission having an output power shaft. Such operator further includes a teeter plate having a shaft engaging portion for engaging the shaft. The shaft has a teeter plate engaging portion for engaging the operator teeter plate. A thrust bearing is in mechanical contact with a hub portion of the teeter plate and a spring is in mechanical contact with the thrust bearing to exert a first axial thrust thereon. The thrust bearing communicating the first axial thrust to the teeter plate so that the shaft engaging portion of the teeter plate engages the teeter plate engaging portion of the shaft. The operator includes a release member having mechanical contact with the hub portion of the teeter plate for exerting a second axial thrust on the teeter plate. The second axial thrust being opposed to the first axial thrust so that the teeter plate may be disengaged from the shaft by the release member. A pair of drive rod pivots are attached to the teeter plate. Such pair of drive rod pivots are connected to a pair of drive rods for opening and closing the pair of biparting doors.

The invention relates to a regenerative brake and hydraulic locking-proof integrated control system of a hybrid vehicle. This integrated control system includes regenerative brake control subsystem and hydraulic braking control subsystem. Two control subsystems are not only independently mutual but also unified each other.Independently is that the hydraulic pressure is controlled by the hydraulic braking control subsystem according to the on-position of wheel without restriction of regenerative brake control subsystem operating status, in the like manner, the regenerative brake moment of front axle is also controlled by regenerative brake control subsystem according to the on-position of wheel without restriction of hydraulic control subsystem operating status. Unification of the two brake control subsystems is that the two control subsystems are coordinating and unifying on acting effect, which can realize harmonious unification on energy recovery and locking prevention. The regenerative brake function of the performance motor of high limit on guaranteeing automobile braking safety and smooth-going nature basis has mainly been solved in the invention, which improves the capacity usage ratio and the economy of car load.

An actuator includes a cylinder, a piston that is disposed in the cylinder and moves by supply and exhaust of working oil to and from the cylinder, a movable rod that is connected to the piston, a screw shaft, at least a part of which is inserted into the movable rod, a nut that is threaded to the screw shaft and moves integrally with the piston, and an electric motor that rotates the screw shaft forward or backward.

In one embodiment of the present invention, a method for adjusting a signal includes applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal. The method also includes, using a clock signal, sampling the output signal to generate a plurality of data values and boundary values, each value comprising either a high value or a low value based on the sampling of the output signal. The method further includes, based only on the high or low value of one or more of the data values and boundary values, adjusting at least one of the loss compensation and the offset compensation applied to the signal, where if the at least one of the loss compensation and the offset compensation applied to the signal is to be increased, the at least one of the loss compensation and the offset compensation is increased by a first amount, if the at least one of the loss compensation and the offset compensation applied to the signal is to be decreased, the at least one of the loss compensation and the offset compensation is decreased by a second amount, and the magnitude of the first amount is not equal to the magnitude of the second amount.

In one embodiment of the present invention, a method for adjusting a signal includes applying at least one of a loss compensation for frequency-dependent distortion and an offset compensation for DC-offset distortion to a signal before or after the distortion occurs to generate an output signal, the output signal comprising even phase and odd phase. The method also includes selecting either the even phase or the odd phase at which to begin sampling. The method further includes, using a clock signal, beginning at the selected phase, sampling the output signal to generate a plurality of data values and an error value, the error value indicating residue of the distortion based on the sampling of the output signal. The method also includes adjusting none, one, or more of the loss compensation and the offset compensation applied to the signal based on the sampled error value. The method further includes, after adjusting the at least one of the loss compensation and the offset compensation applied to the signal based on the sampled error value, selecting either the even phase or the odd phase at which to begin the next sampling.

A vehicular remote locking and unlocking control apparatus includes a door locking instruction switch for outputting a door locking instruction signal, and a door unlocking instruction touch sensor for inputting a door unlocking instruction signal. The door locking instruction switch and the door unlocking instruction touch sensor are mounted on a door handle of the vehicle. After the door locking instruction signal has been output from the door locking instruction switch and until a response signal from a portable radio terminal matches an identification signal for the vehicle based on communication between the vehicle and the portable radio terminal, a monitoring unit monitors whether a door unlocking instruction signal has been input from the door unlocking instruction touch sensor. If the response signal matches the identification signal, and the door unlocking instruction signal has been input, then a door unlocking signal is output.

The invention relates to a method for cooperatively controlling an air pressure and regenerative brake of a hybrid electric bus, which belongs to the technical field of new-energy vehicles. The method comprises the following steps of: firstly, collecting a current air pressure brake force, a brake pedal travel, a brake pedal travel speed, battery information, motor information and vehicle state information of a hybrid electric bus; secondly, distributing the air pressure brake force and a motor brake force by utilizing a regenerative brake force distribution algorithm; thirdly, cooperatively controlling regenerative brake and an ABS (Antilock Brake System) by utilizing a regenerative brake and ABS cooperative control algorithm; and fourthly, compensating and controlling the air pressure brake force by utilizing an air pressure brake force compensation control algorithm. By utilizing the invention, part resources of the common air pressure brake system and the regenerative brake system of the hybrid electric bus can be fully utilized, the brake energy can be recycled to the maximum extent, the economical efficiency of the entire bus is enhanced, and wheels can be prevented from locking so that the brake safety of the entire bus is improved.

A medical chair comprising a base having one wheel having a brake; and a manual braking mechanism for selectively actuating the brake at the wheel; and a control system operable to control the brake in response to a signal or lack of signal at the chair. Further, the control system includes an actuator, which is coupled to the manual braking mechanism to move the manual braking mechanism to a braking or unbraking position. For example, the actuator may comprise a solenoid, the solenoid being coupled to the manual braking mechanism.

An improved skating machine, wherein the improvement involves the incorporation of flexible components including (1) identical first and second pedal connector flexible bars rotatably connected at one respective one to a respective first and second longitudinal pedal bar and rotatably connected at their respective opposite end to a crank axle; (2) a resilient tension means connected at one end to the crank axle and connected at its opposite end to a post which is attached to a portion of a central longitudinal base frame; and (3) at least one transverse interconnecting elastic means transversely interconnecting the first and second longitudinal pedal bars. The flexible components have sufficient elasticity to prevent the machine from locking when the crank and the pedal connector bars are aligned with each other when the pedals are at their extreme left or right position.

A tensioner for a traction drive includes a cylinder arranged in a housing at a distance to a housing wall to thereby define an interior space which contains hydraulic fluid. A piston is received in the cylinder for back-and-forth movement and bounds a pressure chamber containing hydraulic fluid. The piston has a cylinder-distal end which is operatively connected to a spring-biased tension roller supported on a traction member. Formed between the piston and the cylinder is a leakage gap, and a reservoir for hydraulic fluid is provided in an area of the leakage gap to prevent ingress of air into the pressure chamber, when the traction drive is at a rest.