110results about How to "Reduce cyclical fluctuations" patented technology

The invention discloses a method for suppressing the rotating speed fluctuation of an air conditioner compressor. The method comprises the processes of controlling the compressor according to the real-time angular speed and the torque. The process of controlling the compressor according to the real-time angular speed comprises the steps that an axis error is subjected to filtering treatment, so that the angular speed compensation quantity is obtained; the compensated angular speed output quantity is obtained according to the angular speed compensation quantity; and the real-time angular speedis corrected according to the compensated angular speed output quantity, and the compressor is controlled. The process of controlling the compressor according to the torque comprises the steps that the difference between the target angular speed fluctuation quantity and the feedback angular speed is calculated, so that a first angular speed difference is obtained; the first angular speed difference is inputted into a speed loop regulator, so that the output torque is obtained; the torque compensation quantity is obtained according to the first angular speed difference; and the compensated output torque is obtained according to the torque compensation quantity and the output torque, and the compressor is controlled. By use of the method for suppressing the rotating speed fluctuation of theair conditioner compressor, the effectiveness of suppression of the rotating speed fluctuation of the compressor can be improved.

The invention discloses a method for controlling rotational speed of a compressor of an air conditioner. The method comprises the process of controlling the compressor according to real-time angular velocity and moment. The process of controlling the compressor according to the real-time angular velocity comprises the following steps of: performing filtering treatment on axis errors, so as to obtain an angular velocity compensation quantity; according to the angular velocity compensation quantity, obtaining a compensated angular velocity output quantity; and according to the compensated angular velocity output quantity, and amending the real-time angular velocity, and controlling the compressor. The process of controlling the compressor according to moment comprises the following steps of:calculating the difference between a target angular velocity fluctuation quantity and a compensated angular velocity output quantity, so as to obtain a first angular velocity difference value; performing filtering treatment on the first angular velocity difference value, so as to obtain a filtering angular velocity; inputting the filtering angular velocity to a speed ring regulator, so as to obtain an output moment; according to the first angular velocity difference value, obtaining the moment compensation quantity; and according to the moment compensation quantity and the output moment, obtaining the compensated output moment and controlling the compressor. Through the adoption of the method disclosed by the invention, the restraining validity of the rotational speed fluctuation of the compressor can be improved.

The invention discloses a method and device for restraining rotation speed fluctuation of a compressor. The method comprises the steps: acquiring a shaft error reflecting the deviation between an actual position and an estimated position of a compressor rotor; performing filtering processing on the shaft error to obtain at least part of a shaft error compensation quantity after shaft error fluctuation is filtered out; inputting the shaft error compensation quantity as an input quantity into a phase-locked loop regulator of a phase-locked loop for controlling a compressor; and correcting the real-time angular velocity for controlling the compressor by using an output angular velocity of the phase-locked loop regulator, and controlling the compressor according to the corrected real-time angular velocity. The method can improve the effectiveness of compressor rotating speed fluctuation suppression.

The present invention relates to an internal combustion engine having at least one cylinder, wherein the cylinder is connected via a pulse tube with an air collector, and with a water injector. In order to avoid the disadvantages of the prior art, as stipulated in the invention, the water injector is disposed in the air collector.

The invention discloses a method for controlling the rotating speed of a compressor. The method includes the processes of controlling the compressor according to the real-time angular speed and the torque; the process of controlling the compressor according to the real-time angular speed includes the following steps that filtering processing is performed on the axis error, and the angular speed compensation quantity is acquired; the angular speed compensation quantity is compensated to the output angular speed of a phase-locked loop regulator, and the compensated angular speed output quantityis acquired; the real-time angular speed is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed; the process of controlling the compressor according to the torque includes the following steps that the difference between the target angular speed fluctuation quantity and the compensated angular speed output quantity is calculated, and the first angular speed difference is acquired; filtering processing is performed on the first angular speed difference, and the filtered angular speed is acquired; the filtered angular speed is input into a speed loop regulator, and the output torque is acquired; and the compressor is controlled according to the output torque. By the aid of the method, the effectiveness of suppressing of the fluctuation of the rotating speed of the compressor can be improved.

The present invention relates to an internal combustion engine having at least one cylinder, wherein the cylinder is connected via a pulse tube with an air collector, and with a water injector. In order to avoid the disadvantages of the prior art, as stipulated in the invention, the water injector is disposed in the air collector.

The purpose of the present invention is to provide an elbow with inner spiral fins near the wall, which is suitable for the transportation of gas-liquid two-phase fluids and fluids containing volatile media, and eliminates the change of the flow direction of the elbow and the change of the wall surface of the pipeline. The boundary layer separation and secondary eddy current caused by the uncoordinated inner and outer curvatures reduce the corrosion degree of the inner and outer walls of the elbow and improve the service life of the fluid conveying pipeline. The technical scheme adopted in the present invention is as follows: an elbow with inner spiral fins on the near wall surface, comprising an elbow body, an inlet nozzle flange and an outlet nozzle flange at both ends of the elbow body, 2 to 6 groups of Inner helical fins, the inner helical fins extend along the inner wall of the elbow pipe from the inlet to the outlet inside the elbow, the inner helical fins are variable pitch fins, and the pitch decreases first along the flow direction increasing trend later.

The invention discloses a single-rotor compressor rotation speed fluctuation suppression method, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount is compensated to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; the real-time angular velocity is corrected according to the compensated angular velocity output, and the compressor is controlled according to the corrected real-time angular velocity; according to the torque The process of controlling the compressor includes: calculating the difference between the target angular velocity fluctuation and the output angular velocity of the phase-locked loop regulator to obtain a first angular velocity difference; filtering the first angular velocity difference to obtain a filtered angular velocity; The filtered angular velocity is input to a speed loop regulator to obtain an output torque; the compressor is controlled according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for controlling the rotation speed fluctuation of an air conditioner compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; according to the angular velocity compensation amount Obtaining the compensated angular velocity output; correcting the real-time angular velocity and controlling the compressor according to the compensated angular velocity output; controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference ; Perform filtering processing on the first angular velocity difference to obtain a filtered angular velocity; input the filtered angular velocity to a speed loop regulator to obtain an output torque; obtain a torque compensation amount according to the first angular velocity difference; according to the torque compensation amount and the output torque to obtain a compensated output torque and control the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method and device of controlling the rotating speed of a compressor. The method comprises the steps that an axis error which reflects the deviation between the practical position and the presumptive position of a compressor rotor is acquired; the axis error is subjected to filtering treatment, so that a corrected axis error which is formed after at least one part of the axis error fluctuation is filtered away and the angular speed compensation quantity which corresponds to the corrected axis error are obtained; the angular speed compensation quantity compensates for the output angular speed of a phase-locked loop regulator in a phase-locked loop of the compressor, so that the compensated angular speed output quantity is obtained; meanwhile, the output angular speed of the phase-locked loop regulator is inputted into a speed loop regulator in a speed loop by serving as the input quantity; and the real-time angular speed for compressor control is corrected according to the compensated angular speed output quantity, and the compressor is controlled according to the corrected real-time angular speed and the output torque of the speed loop regulator. By use ofthe method and device, the effectiveness of suppression of the rotating speed fluctuation of the compressor can be improved.

The invention discloses a method for suppressing the rotation speed fluctuation of a single-rotor compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain angular velocity compensation amount; compensate the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correct the real-time angular velocity according to the compensated angular velocity output, and control the compressor according to the corrected real-time angular velocity The process of controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; Input to the speed loop regulator to obtain the output torque; control the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for controlling the rotation speed fluctuation of an air conditioner compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount obtains the compensated angular velocity output; corrects the real-time angular velocity and controls the compressor according to the compensated angular velocity output; the process of controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity, and obtaining The first angular velocity difference; input the first angular velocity difference to the speed loop regulator to obtain the output torque; obtain the torque compensation amount according to the first angular velocity difference; obtain the compensation according to the torque compensation amount and the output torque output torque and control the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for controlling the rotation speed fluctuation of a single-rotor compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain angular velocity compensation amount; compensate the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correct the real-time angular velocity according to the compensated angular velocity output, and control the compressor according to the corrected real-time angular velocity The process of controlling the compressor according to the torque includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; Input to the speed loop regulator to obtain the output torque; control the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method and device for controlling the rotational speed of a compressor. The method includes: obtaining an axis error reflecting the deviation between the actual position and the estimated position of the compressor rotor; filtering the axis error to obtain at least filtered The shaft error compensation amount after part of the shaft error fluctuation; the shaft error compensation amount is input to the phase-locked loop regulator in the compressor control phase-locked loop as the input amount, and the output angular velocity of the phase-locked loop regulator is obtained; The output angular velocity of the phase-locked loop regulator is input to the speed loop regulator in the compressor control speed loop as an input to obtain the output torque of the speed loop regulator; using the output of the phase-locked loop regulator The angular velocity corrects the real-time angular velocity used for compressor control, and controls the compressor according to the corrected real-time angular velocity and the output torque of the speed loop regulator. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for suppressing fluctuation of the rotation speed of a compressor. The method comprises the process of controlling the compressor according to the real-time angular speed and the process of controlling the compressor according to the moment. The process of controlling the compressor according to the real-time angular speed comprises the steps that filtering processing is carried out on axis errors, and the axis error compensation quantity is obtained; the axis error compensation quantity is input into a phase-locked loop adjuster, and the output angular speed of the phase-locked loop adjuster is obtained; and the real-time angular speed is corrected through the output angular speed, and the compressor is controlled according to the corrected real-time angular speed. The process of controlling the compressor according to the moment comprises the steps that the difference between the target angular speed fluctuation quantity and the output angular speed of the phase-locked loop adjuster is calculated, and a first angular speed difference value is obtained; the first angular speed difference value is subjected to filtering processing, and a filtering angular speed is obtained; the filtering angular speed is input into a speed loop adjuster, and the output moment is obtained; and the compressor is controlled according to the output moment. By meansof the method, effectiveness of suppressing fluctuation of the rotation speed of the compressor can be improved.

The invention discloses a method for controlling the rotational speed fluctuation of an air-conditioning compressor, including the process of controlling the compressor according to the real-time angular velocity and torque; controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation; The angular velocity compensation amount obtains the compensated angular velocity output; corrects the real-time angular velocity and controls the compressor according to the compensated angular velocity output; and controls the compressor according to the torque including: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filter the first angular velocity difference to obtain a filtered angular velocity; input the filtered angular velocity to a speed loop regulator to obtain an output torque; obtain a torque compensation amount according to the first angular velocity difference; according to the The torque compensation amount and the output torque obtain the compensated output torque and control the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for suppressing the rotation speed fluctuation of a compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; Compensating the angular velocity compensation amount to the output angular velocity of the phase-locked loop regulator to obtain the compensated angular velocity output; correcting the real-time angular velocity according to the compensated angular velocity output, and controlling the compressor according to the corrected real-time angular velocity; The process of the torque control compressor includes: calculating the difference between the target angular velocity fluctuation and the feedback angular velocity to obtain the first angular velocity difference; filtering the first angular velocity difference to obtain the filtered angular velocity; inputting the filtered angular velocity to The speed loop regulator obtains the output torque; and controls the compressor according to the output torque. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.

The invention discloses a method for controlling the rotation speed fluctuation of an air conditioner compressor, which includes the process of controlling the compressor according to the real-time angular velocity and torque; the process of controlling the compressor according to the real-time angular velocity includes: filtering the shaft error to obtain the angular velocity compensation amount; The angular velocity compensation amount obtains the compensated angular velocity output; corrects the real-time angular velocity and controls the compressor according to the compensated angular velocity output; the process of controlling the compressor according to the torque includes: calculating the target angular velocity fluctuation and the phase-locked loop regulator The difference between the output angular velocities to obtain the first angular velocity difference, and input the first angular velocity difference to the speed loop regulator to obtain the output torque; obtain the torque compensation amount according to the first angular velocity difference; according to the torque compensation amount and The output torque obtains the compensated output torque and controls the compressor. By applying the present invention, the effectiveness of suppressing the fluctuation of the rotational speed of the compressor can be improved.