摘要:
A motor control apparatus includes a reference model unit configured to generate a model output, a feedback unit configured to generate a feedback, and an adder configured to add up the model input and the feedback and generate a control input to the controlled object. The reference model unit includes a storing unit configured to retain, as a vector, a present value of the target value and one or a plurality of past values of the target value, a numerical model configured to simulate a characteristic of the controlled object and generate the model output and a state variable on the basis of the model input, a model controller configured to generate the model input and a controller determining unit configured to determine the model controller.
摘要:
A motor control apparatus includes a reference model unit configured to generate a model output representing a desired operation of the controlled object and a model input for driving the controlled object to the desired operation, a feedback unit configured to generate a feedback for causing the control output to follow the model output, and an adder configured to add up the model input and the feedback and generate a control input to the controlled object. The reference model unit includes a storing unit configured to retain, as a vector, a present value of the target value and one or a plurality of past values of the target value, a numerical model configured to simulate a characteristic of the controlled object and generate the model output and a state variable on the basis of the model input, a model controller configured to generate the model input, and a controller determining unit configured to determine the model controller.
摘要:
An internal mixer and controller enables the phase difference and the speed ratio between two rotors to be changed without stopping the operation of the mixer. The internal mixer comprises: nonintermeshed first and second rotors disposed in a mixing chamber; first and second drive units; first and second phase measuring devices; first and second speed measuring devices; and a control unit for controlling the first and second drive units on the basis of signals from the first and second speed measuring devices and signals from the first and second phase measuring devices. The control unit controls the two rotors so as to synchronously rotate at the same speed on the basis of the signals from the speed measuring devices when the two rotors fixedly rotate at the same speed. When the phase difference between the two rotors is changed, the control unit calculates the phase difference from the signals from the phase measuring devices, compares the calculated phase difference with a set phase difference, and controls the second drive unit to change the speed of the second rotor, thereby changing the phase. When the phase difference is equal to the set phase difference, the control unit again controls the two rotors so as to synchronously rotate at the same speed on the basis of the signals from the speed measuring devices. When the two rotors are rotated at different speeds, the control unit controls the drive units so that the speed of each of the rotors is equal to the set speed, respectively, on the basis of the measured speed from speed measuring devices.
摘要:
A mixing/extruding apparatus having a mixer/extruder provided with a diverter, an electric motor for driving this mixer/extruder, and a power supply device for supplying a drive power to this electric motor, and the power supply device includes a start-up power supply portion for supplying a drive power with which the electric motor is rotated at low speed with a smaller output than an output generated upon the normal operation to the electric motor, an operation power supply portion for supplying a drive power with which the electric motor is rotated at high speed with the output generated upon the normal operation to the electric motor, and a power supply switching device for switching the drive power from the start-up power supply portion to be supplied to the electric motor to the drive power from the operation power supply portion.
摘要:
An object of the present invention is to provide a control method for a kneader suitable for controlling the kneader so as to uniformly disperse a compounding agent in a high-molecular material, enabling energy saving. In controlling the kneader for charging the high-molecular material and the compounding agent into a kneading chamber and kneading the mixture of the high-molecular material and the compounding agent so as to uniformly disperse the compounding agent in the high-molecular material, the control method includes the steps of measuring a sound wave generating from the kneading chamber during kneading, detecting whether or not a waveform of the sound wave has become a waveform generating when the compounding agent is uniformly dispersed, and deciding that the kneading is ended if the waveform of the sound wave has become the waveform generating when the compounding agent is uniformly dispersed. It is preferable to perform envelope detection of the sound wave in controlling the kneader. Further, detection of a second torque peak of the kneader from the sound wave is effective for the control.
摘要:
A multicomponent mixture is separated into its components by subjecting the multicomponent mixture to a separation means to flow therein, which means comprises a plurality of columns divided into at least three groups wherein each group of columns has the columns which are in the same number as that of the components in the multicomponent mixture and are filled with a adsorbent so that one column has an adsorbent specific to either one of the components; wherein the three groups are respectively assigned to fractionation in a fractionation zone, to purification in a purification zone and to desorption in a desorption zone; the groups of columns are switched from zone to zone; and the effluent from the columns used in the fractionation zone is sent to the columns in the purification zone which have once been used in the fractionation zone and the columns in the purification zone are then assigned, upon the switching, to desorption.
摘要:
A bank quantity adjusting device for an extruder capable of accurately controlling a bank quantity regardless of a difference in composition of a material to be extruded. The bank quantity adjusting device includes a pressure sensor 13 for detecting a bank pressure between an outlet 7 of an extruder body 1 provided with material extruding screws 3 and a roller die 2 provided before the outlet 7, and a control device 15 for controlling one or both of a screw speed and a roller die speed according to a difference between the bank pressure detected by the pressure sensor 13 and a set target pressure. The bank quantity adjusting device further includes bank quantity detector 14 for detecting a bank quantity between the outlet 7 and the roller die 2, and a processor 16 provided in the control device 15 for obtaining a correlation between the bank quantity and the bank pressure from a detection value of the bank quantity detected by the bank quantity detector 14 and a detection value of the bank pressure detected by the pressure sensor 13 upon detection of the bank quantity, converting a target value of the bank quantity into a pressure value by using the correlation obtained above, and setting this pressure value to the above target pressure.
摘要:
An apparatus in which a glass rod is inserted into a spinning oven to perform spinning and glass fiber yarn is drawn out at a shutter located in the lower end of the spinning oven, comprising a timer for measuring a time from the start of heating of the glass rod inserted into the spinning oven until the fall of glass drops formed by the heating of the glass rod and a detector below the shutter for detecting the fall of the glass drops, for the purpose of automatically opening the shutter when a preset time of the timer is over and automatically closing the shutter by detection by the detector, thereby dispensing with a worker's monitoring of the spinning oven for opening and closing the shutter and preventing a danger of giving damage to the shutter and the spinning oven in the event of delayed shutter opening-closing timing.
摘要:
A process and apparatus for continuously separating a multicomponent mixture containing at least 3 components and purifying each component in a high concentration, high purity and high recovery, wherein the apparatus comprises a column group comprising a fractionation zone, a purification zone and a desorption zone which are formed by combining at least 2 columns to form one subgroup and combining at least 3 zones; column connection tubings for in series connecting the columns in the fractionation zone; subgroup connection tubings for connecting corresponding columns of two subgroups positioned in the separation zone (in series) and the purification zone (in parallel); zone connection tubings for in parallel connecting each column of the fractionation zone and each column of the purification zone; purification/desorption medium-feeding tubings for feeding each purification/desorption medium to each column of the purification and desorption zones; a subject mixture-feeding means for feeding a multicomponent mixture to the column of the uppermost stream of the fractionation zone; and a column group movement means for successively moving the columns from the present subzone to the next subzone and/or a switching means for switching the tubing flow between columns by opening or closing of valves.