54results about How to "Improve control responsiveness" patented technology

The invention relates to a power network model-based wind power field automatic voltage control method which comprises the following steps of: 1, reading original data and building a wind power field power network mathematical model; 2, reading a wind power field real-time running working condition and a voltage target value released by the power grid dispatching; 3, carrying out load flow calculation to obtain initial load flow distribution on the basis of the former two steps; 4, distributing and releasing the reactive power reference value of a wind driven generator according to a sensitivity ordering strategy; 5, distributing and issuing the reactive power reference value of a dynamic reactive compensation device according to the sequence; and 6, confirming and releasing the tapping point gear reference value of an on-load tap changing transformer according to a step-by step adjustment strategy. According to the power network model-based wind power field automatic voltage control method, the unified coordination control among the reactive power of the wind power field wind driven generator, the reactive power of the dynamic reactive compensation device and the tapping joint of the on load tap changing transformer can be realized.

Control device for a 4WD vehicle is provided. The 4WD vehicle includes a driving force source, main driving wheels, auxiliary driving wheels, a driving force transmission shaft, a first disconnection mechanism, and a second disconnection mechanism. The first disconnection mechanism and the second disconnection mechanism are engaged during 4WD traveling. One of the first disconnection mechanism and the second disconnection mechanism is a clutch. The control device includes an electronic control unit. The electronic control unit is configured to execute engagement control for controlling the engagement force of the clutch so that the driving force transmission shaft is maintained in a state prior to the initiation of a continuous increase in the rotation speed of the driving force transmission shaft.

The pressure-type flow control device includes: a main body provided with a fluid channel communicating between a fluid inlet and a fluid outlet and an exhaust channel communicating between the fluid channel and an exhaust outlet; a pressure control valve fixed to a fluid inlet side of the main body for opening or closing the upstream side of the fluid channel; a first pressure sensor for detecting the internal pressure of the fluid channel on the downstream side of the control valve; an orifice provided in the fluid channel on the downstream side of the point of branching of the exhaust channel; an on/off valve for opening or closing the fluid channel on the downstream side of the first pressure sensor; and an exhaust valve for opening or closing the exhaust channel.

There is provided an external illumination apparatus capable of increasing flexibility of illumination, the external illumination apparatus including a CPU and a memory so as to control lighting of a plurality of illumination LEDs with reference to a lighting pattern stored in the memory, wherein this lighting control is executed by a lighting command from an optical information reading apparatus.

A variable valve actuation apparatus of an internal combustion engine has a multinodular-link motion converter, to vary at least a working angle. A position of rotation of a control shaft, variably adjusting the attitude of the motion converter, is set, so that, at a peak lift during a valve opening period, an angle γ2 between an extension line of a line segment connecting a first fulcrum corresponding to a drive-eccentric-cam center and a second fulcrum provided on a rocker arm and a line segment connecting the second fulcrum and a third fulcrum provided on the rocker arm at a position different from the second fulcrum at a middle working-angle control mode is less than both an angle γ1 between the two line segments at a minimum working-angle control mode and an angle γ3 between the two line segments at a maximum working-angle control mode.

When a voltage conversion operation is started, a control circuit (30) performs an operation to obtain a voltage command value for each control timing with setting a target voltage obtained based on a torque command value (TR) and a motor rotation number (MRN) as a final value, and controls a boost converter (12) so as to match an output voltage (Vm) with the voltage command value. The control circuit (30) has a prescribed threshold value set to be lower than the target voltage. The control circuit (30) controls the boost converter (12) with setting an absolute value of a rate of change between control timings to a first value until the voltage command value reaches the prescribed threshold value. When the voltage command value becomes at least the prescribed threshold value, the boost converter (12) is controlled with setting the absolute value of the rate of change to a second value smaller than the first value.

The construction vehicle is provided with an engine, a clutch, a travel device, a work equipment, a drive force setting dial, and a controller that includes: a theoretical value determination unit that determines a theoretical value, for the degree of engagement to make the upper limit value of the drive force equal to a set drive force; an operational state determination unit that determines whether the work equipment is outputting the drive force in a predetermined travel direction; a drive force determination unit that determines whether the drive force is greater than the set drive force; and a degree of engagement reduction unit that, if of operational state determination and of drive force determination are both affirmative, causes the degree of engagement to approach the theoretical value.

A four-wheel drive control system is provided which comprises a driving force distribution mechanism for transmitting a driving force from a power source to main driving wheels of a vehicle and capable of distributing the driving force to auxiliary driving wheels of the vehicle, a rotational speed difference detector for detecting a rotational speed difference between the main and auxiliary driving wheels, and a driving force distribution controller for controlling a distribution of the driving force to the main and auxiliary driving wheels on the basis of the rotational speed difference, wherein the driving force distribution controller determines a driving force to be transmitted to the auxiliary driving wheels on the basis of an output of the power source, a longitudinal load distribution in the vehicle and the rotational speed difference. A four-wheel drive control method is also provided.

The invention refers to a turbo chiller, concretely a turbo chiller which can easily detect and adjust the refrigerant liquid level of a condenser. The turbo chiller comprises a compressor comprising impellers used for compressing a refrigerant; a condenser used for performing heat exchange on the refrigerant flowing from the compressor and cooling water; an evaporator used for performing heat exchange on the refrigerant discharged from the condenser and the cool water; an expansion valve arranged between the condenser and the evaporator; more than two sensors arranged at different heights in increasing direction of the refrigerant liquid level and used for detecting the refrigerant liquid level in the condenser; and a controlling part used for adjusting the aperture of the expansion valve in dependence on the refrigerant liquid level detected by the sensors.

A glow plug may include: i) a hollow plug housing that is mounted on a plug mount in an insulation status; ii) a center shaft that is fixed to one end of the plug housing in an insulation status and receives power from the outside; iii) a heating unit that is connected to the center shaft and the other end of the plug housing, and generates heat using a potential difference; and iv) a connecting unit that insulates the plug mount and the center shaft, is coupled to the plug mount, and electrically connects with center shaft with the plug housing.

The present invention discloses a conveying device which comprises a conveying part driven by an electromotor and driving objects to be conveyed to rotate to be conveyed to a preceptive position, an inertia presumption mechanism used for presumption of the inertia of the conveying part, and an acceleration determining mechanism used for determining the most rotary angular acceleration of the conveying part according to putative inertia of the inertia presumption mechanism and the most output torque moment of the electromotor.