47results about How to "Improve follow-up performance" patented technology

A driving apparatus of a synchronous motor fixes all the switching devices of an inverter at OFF in accordance with a value of an all-OFF control pulse signal outputted by a pulse generator. A motor current keeps flowing through free wheel diodes for a predetermined period even after all the switching devices shift to the OFF state. Therefore, pulse generator changes an induced voltage detection signal to an H (high) level after the passage of the time in which a motor current drops down to zero. A terminal voltage of the motor is taken in to acquire an induced voltage and a rotor position is estimated.

A device for controlling restoration of a motor driven power steering (MDPS) system may include a controller configured to control an MDPS system model to output a target steering column speed command corresponding to a restoration control torque command based on a received error between a target steering column speed and an actual steering column speed, and a disturbance observer configured to compensate for a disturbance included in an output of the MDPS system model to provide the disturbance to an output of the controller, in which the output of the MDPS system model may be fed back to an input of the controller.

The present invention relates to a control program, a controller, and a boiler system that are related to a boiler group including a plurality of boilers controlled in combustion at stepwise combustion positions. It is well suitable, in a control program for conducting control on a boiler system that includes a boiler group having a plurality of boilers which can be controlled in combustion quantity at stepwise combustion positions and in which at least one of the combustion positions is assumed to be a high-efficiency combustion position and that is configured to be controlled in combustion based on an increase/decrease in desired loads, that in the case of increasing a quantity of combustion in the boiler group, after a high-efficiency combustion shift signal that makes the shift to the high-efficiency combustion position is output to all of the boilers subject to high-efficiency control by which control is conducted on the basis of combustion at the high-efficiency combustion position, a control signal may be output that makes the shift to a higher combustion position than the high-efficiency combustion positions for any one of the high-efficiency control subject boilers.

In a control unit for a robot, an inverter which drives a motor installed in a robot. A control circuit controls drive of the motor. A drive power circuit supplies DC power to the motor, and a control power circuit DC power to the control circuit. A backup power circuit supplies backup DC power to the control circuit when the DC power from the control power circuit to the control circuit is shut down. A first switch is arranged between the backup power circuit and the inverter, the first switch being selectively switched on and off to open and close. A first switch control section switches on the first switch such that the DC power in the backup power circuit is supplementarily supplied to the inverter when the motor is driven to be accelerated.

To easily perform adjustment relating to feedforward control and also to improve command follow-up performance. A machine learning device includes label acquisition means for acquiring, as a label, a command output by a servo control apparatus to a control target device so as to drive and control the control target device, input data acquisition means for acquiring, as input data, an output of the control target device driven based on the command, and learning means for building a learning model relating to feedforward control for correcting the command, by performing supervised learning by use of a set of the label and the input data serving as teacher data.

A die cushion controller, for driving a die cushion, disposed in opposition to a slide of a press machine, by controlling a servo motor, including: a pressure command portion which prepares a pressure command value for exerting a predetermined pressure to a press material disposed between the slide and the die cushion; a pressure detecting portion which detects an actual pressure exerted on the press material; a speed correction value preparing portion which prepares a speed correction value by multiplying a differential value of the pressure command value prepared by the pressure command portion by a coefficient; and a first speed command portion which prepares a speed command value to be instructed to the servo motor based on the pressure command value prepared by the pressure command portion, the actual pressure detected by the pressure detecting portion, and the speed correction value prepared by the speed correction value preparing portion.

The invention relates to the technical field of materials for lithium-ion batteries, in particular to a high-nickel base cathode paste for a lithium-ion battery and a preparation method of the high-nickel base cathode paste. The cathode paste is prepared from the following raw materials in parts by weight: 80-98 parts of a high-nickel cathode material, 2-18 parts of a binder, 1-10 parts of a carbon nanofiber and 0-10 parts of a conductive agent; a chemical formula of the high-nickel cathode material is LiNi<x>M<1-x>O<2>, wherein x is smaller than or equal to 1 and greater than or equal to 0.5; M is CO, Mn, Al, Mg or Cr; the binder is a modified polyvinylidene fluoride binder; a solvent is N-methyl pyrrolidone; and a certain amount of the solvent is used to make the solid content of the cathode paste reach 40-70%. According to the preparation of the paste, the gel phenomenon of the paste in the preparation process is avoided; and the subsequent performance of the lithium-ion battery is improved.

In an electric vacuum cleaner including a communicating tube forming an air trunk which communicates to a suction opening which suctions dust and a vacuum cleaner main body having a communicating tube attachment member attaching the communicating tube, a strain gauge is attached to a floor surface side of the communicating tube attachment member. This strain gauge is connected to one side of a resistor bridge circuit. Tension acts on the strain gauge due to an operation of the communicating tube during the cleaning so that an output is generated at the resistor bridge circuit. After being amplified, this output is differentiated in a condenser. This differentiated voltage signal is compared to a threshold level voltage in a comparator. A running motor is driven only in a period that the voltage signal exceeds the threshold level voltage.

The magnitude of magnetic attraction generated between an electromagnetic coil and a magnetic metal member (or an amount of electric current flowed to the electromagnetic coil) is controlled depending on a direction of acceleration (acceleration caused by the gravity (a gravitational acceleration) and acceleration caused by shake (shake acceleration)) working on an imaging apparatus. This magnetic attraction moves a second slider (including a CCD and a first slider) as a whole toward the electromagnetic coil. This movement brings two inclined surfaces (or fourth and fifth surfaces) of a shaft hole 10d into contact with a second guide shaft with no gap being interposed in between, and keeps the this contact condition.

A thickness detection device for filling and packaging bag, comprising a thickness detection mechanism capable of detecting a difference in thickness between a bag-shaped part and a lateral seal part formed in a continuous filling and packaging bag having detection elements following up the lateral movement of the filling and packaging bag relative to the feeding direction of the continuous filling and packaging bag positioned so as to be allowed to pressingly abut on each other from both outer surface sides of the film of the filling and packaging bag and a detector for detecting the displacement of the detecting elements by a difference in thickness between the bag-shaped part and the lateral seal part of the filling and packaging bag, whereby even if a packaging style for each package type, particularly, the thickness of the filling and packaging bag is changed, the follow-up capability to the lateral movement for the filling and packaging bag can be improved, and the detector can be operated in stable condition without being affected by a variation in thickness of the bag-shaped part of the filing and packaging bag.

The invention relates to a system and a method for recovering calcium carbonate and sulfur by calcining gypsum. The system comprises a coal gasification-calcination U-shaped furnace, a H2O-CO2 processor and a Klaus reactor. A coal gasification section on the right side of the coal gasification-calcination U-shaped furnace is respectively connected with a calcium-based material storage bin and a coal powder storage bin. A calcination section on the left side of the coal gasification-calcination U-shaped furnace is connected with a gypsum storage bin. The top end of the calcination section on the left side of the coal gasification-calcination U-shaped furnace is connected with a high-temperature separator. The bottom of the high-temperature separator is sequentially connected with a calciumsulfide-calcium oxide cooler, a H2O-CO2 processor and a calcium carbonate storage bin. The H2O-CO2 processor is also connected with the Klaus reactor. The Klaus reactor is sequentially connected witha sulfur recovery device and a sulfur storage bin. The sulfur recovery device is also connected with a flue gas purification system. The system and the method are used for preparing the sulfur and a byproduct, calcium carbonate powder, by using the industrial byproduct gypsum which is difficult to treat, and the byproduct calcium carbonate powder can replace limestone to be used as a desulfurization and denitrification agent for recycling and can also be used as a catalyst of a coal gasification process.

The invention discloses a constant temperature atomization incubator for crop seeds. The constant temperature atomization incubator includes a box body. After an appropriate amount of windrows are added in a culture cabinet, and crop seeds are placed on the windrows; when the seeds require nutrient solution, a induced draft fan is started to cause air to be filtered through an air filter and theninput into an air inlet of an atomization nozzle; through a water pump, the nutrient solution is filtered through a liquid filter and then input into a liquid inlet of the atomization nozzle, and theatomized nutrient solution is led to an atomization pipe and flows into each branch pipe; the atomized nutrient solution is sprayed onto the crop seeds in the culture cabinet through the nozzle, a heat insulation effect on the crop seeds is achieved through a heating lamp, and a temperature sensor is set to a preset value; when the temperature sensor senses that the temperature in a cavity is notin a preset temperature value range, the heating lamp is controlled and driven by a control module to improve a working temperature, or the working temperature of the heating lamp is reduced, until the temperature in the cavity is balanced with the preset value.

In a depilating device for making depilation using a soap in which a depilation head including a depilating portion for removing hair is attached to a main body casing including a manually grippable grip and having a waterproof structure, a wiper for wiping off bubbles adhering to a skin surface after depilating is provided on a head frame that surrounds the depilating portion.

A servo control of an optical disk apparatus increases a suppression degree of an iterative learning control system, against a frequency disturbance of integer multiple of rotation frequency in a predetermined rotation phase range including a range, in which a servo deviation is detected, of the rotation phase.

Provided is a knocking detection apparatus capable of reducing erroneous determination of knocking during transition, and improving knocking detection accuracy regardless of whether an engine is in steady operation or transient operation. A knocking detection apparatus according to the present invention estimates a background level based on an operating state of an internal combustion engine, and calculates a knocking determination index by using the estimated value.

An adaptive antenna receiver whose follow-up performance is improved with respect to the angle change of the arrival direction of a desired signal. An antenna weight adaptive update section (11-1) adaptively updates the antenna weight according to a signals received by each antenna element and an error signal obtained from a desired signal corrected based on transmission channel estimation. An antenna weight direction constraint section (12-1) performs the constraint process for the antenna weight obtained by the antenna weight adaptive update section (11-1) to maintain the beam gain constant in the arrival direction of the desired signal. A beamformer (2-1) receives the desired signal through an array antenna using the antenna weight which has undergone the constraint process performed by the antenna weight direction constraint section (12-1). A transmission channel estimation section (3-1) estimates the transmission channel of the desired signal received by the beamformer (2-1) to correct the desired signal based on the estimation result.