Abstract: Disclosed is a cam curve design method for a cap screwing machine based on a multi-objective method, belonging to the technical field of cap screwing machine cam design. The present disclosure is to solve the problem that the conventional method for redesigning the cam curve cannot optimize the parameters according to the degree of importance such that the operating stability of a cam mechanism is poor.

Abstract: The disclosure discloses a method for determining reasonable design area of roots pump rotor profile of roots pump and its application, and belongs to the field of mechanical design. According to the method of the disclosure, after a relation between the roots pump rotor profile and performance parameters is established, constraint conditions for avoiding a closed volume and undercutting are further determined, so that a reasonable design region of a roots pump rotor blade peak curve is determined. Reference is given when the roots pump rotor profile is designed, i.e., the rotor profile with the blade peak curve being not within the reasonable design region inevitably causes the problem of closed volume or undercutting in application, so that the design of the rotor profile that causes the closed volume or undercutting can be avoided when the roots pump rotor profile is designed.

Abstract: A method for generating fractional PWM pulses to drive an light emitting device includes generating multiphase clock signals using a multiphase PLL or DLL includes the steps of generating a plurality of phases of PWM pulses that correspond to a number of phases of the multiphase clock signals, selecting two or more phases amongst the plurality of PWM pulses, performing logic operations of the selected phases of PWM pulses to generate fractional PWM pulses, and generating a driving current using the fractional PWM pulses in a current source. The light emitting device is can be an LED display comprising an LED array having a plurality of channels and a plurality of scan lines. The driving current drives LEDs in one of the plurality of channels.

Abstract: The disclosure discloses a method for determining reasonable design area of roots pump rotor profile of roots pump and its application, and belongs to the field of mechanical design. According to the method of the disclosure, after a relation between the roots pump rotor profile and performance parameters is established, constraint conditions for avoiding a closed volume and undercutting are further determined, so that a reasonable design region of a roots pump rotor blade peak curve is determined. Reference is given when the roots pump rotor profile is designed, i.e., the rotor profile with the blade peak curve being not within the reasonable design region inevitably causes the problem of closed volume or undercutting in application, so that the design of the rotor profile that causes the closed volume or undercutting can be avoided when the roots pump rotor profile is designed.

Abstract: A method for generating fractional PWM pulses to drive an light emitting device includes generating multiphase clock signals using a multiphase PLL or DLL includes the steps of generating a plurality of phases of PWM pulses that correspond to a number of phases of the multiphase clock signals, selecting two or more phases amongst the plurality of PWM pulses, performing logic operations of the selected phases of PWM pulses to generate fractional PWM pulses, and generating a driving current using the fractional PWM pulses in a current source. The light emitting device is can be an LED display comprising an LED array having a plurality of channels and a plurality of scan lines. The driving current drives LEDs in one of the plurality of channels.

Abstract: Disclosed is a cam curve design method for a cap screwing machine based on a multi-objective method, belonging to the technical field of cap screwing machine cam design. The present disclosure is to solve the problem that the conventional method for redesigning the cam curve cannot optimize the parameters according to the degree of importance such that the operating stability of a cam mechanism is poor.

Abstract: A method, computer program product, and computer system for backfilling jobs based on energy aware scheduling are provided. A first job is received at a scheduler, where the scheduler manages one or more running jobs based on a plurality of system resources. The plurality of system resources comprises at least one resource constraint. A resource consumption of the first job is estimated based on one or more resource requirements of the first job. A first resource requirement of the one or more resource requirements is determined to exceed the resource constraint. In response to determining that the first resource requirement of the first job exceeds at least one resource constraint, at least one of (i) the first resource requirement of the first job and (ii) the plurality of system resources is modified. The first job is scheduled.

Abstract: A method, computer program product, and computer system for backfilling jobs based on energy aware scheduling are provided. A first job is received at a scheduler, where the scheduler manages one or more running jobs based on a plurality of system resources. The plurality of system resources comprises at least one resource constraint. A resource consumption of the first job is estimated based on one or more resource requirements of the first job. A first resource requirement of the one or more resource requirements is determined to exceed the resource constraint. In response to determining that the first resource requirement of the first job exceeds at least one resource constraint, at least one of (i) the first resource requirement of the first job and (ii) the plurality of system resources is modified. The first job is scheduled.