944 results about "Plant" patented technology

Adaptive controller apparatus of a plant may be implemented. The controller may comprise an encoder block and a control block. The encoder may utilize basis function kernel expansion technique to encode an arbitrary combination of inputs into spike output. The controller may comprise spiking neuron network operable according to reinforcement learning process. The network may receive the encoder output via a plurality of plastic connections. The process may be configured to adaptively modify connection weights in order to maximize process performance, associated with a target outcome. The relevant features of the input may be identified and used for enabling the controlled plant to achieve the target outcome.

This invention discloses a sort of method of the PID parameter setting of the coordinated control system of the cell-system generating set which belongs to this area of the control technique of the set. This method identifies the multivariable dynamic mathematic model of the unit plant according to the universal structural style. Used the series decoupling principle and the two-degree of freedom control structure the coordinated control system of the unit plant which has the PID form is thought out based this model, thereby the each setting step of the related parameter are get in this system by combining the theoretical derivation and the engineering test. This invention has this character in that the consecution is clear; the practicability is good, and it fits to engineering apply. The engineering technical personnel structures the corresponding coordinated control system expediently, and combines the engineering test aimed at the unit plant of various group, it sets out the related parameter of this system availably.

Adaptive proportional-integral-derivative controller apparatus of a plant may be implemented. The controller may comprise an encoder block utilizing basis function kernel expansion technique to encode an arbitrary combination of inputs into spike output. The basis function kernel may comprise one or more operators configured to manipulate basis components. The controller may comprise spiking neuron network operable according to reinforcement learning process. The network may receive the encoder output via a plurality of plastic connections. The process may be configured to adaptively modify connection weights in order to maximize process performance, associated with a target outcome. Features of the input may be identified and used for enabling the controlled plant to achieve the target outcome.

The invention discloses an on-line monitoring method for cutter abrasion damage based on main shaft driving current and working step. The method is made by the following steps that realizing communication with a numerical control system to obtain machining working step information, meanwhile, the driving current and the load of the main shaft are monitored, and on the basis of a normal cutter andabrasion damage cutter cutting torque difference analysis and statistical quality control principle. Control graph for drawing average current / load required by each working step processing, a control graph control line is reasonably formulated, the abrasion state of each working step is judged, and a tool changing or cutter edge grinding rule is formulated. According to the variation of instantaneous main shaft current or instantaneous load with the deviation from the instantaneous current / load in normal machining in each working step of machining, the cutter breakage is determined, the alarm signal is sent to inform the numerical control system to emergency shutdown so as to avoid the serious consequences of damaging the workpiece and the machine tool. According to the method, on onehand, the part rejection rate and the machine tool fault rate can be reduced, on the other hand, the service life of the cutter can be prolonged to the maximum extent, and the use cost of a plant cutter is reduced.

A pair of foils are pivotably coupled to a nacelle. The nacelle is pivotably coupled to a mast extending down from to a frame and below a water surface. A push rod oscillates, causing the nacelle to experience a heaving motion, in turn causing the foils to flap up and down. The push rod is driven by a power plant such as a human rider. Angles of attack for the foils are actively controlled to optimize lift and propulsion forces provided by the foils to cause the water craft to move over the water. A steering fin is also provided for heading control of the water craft. A control system for separate angles of attack for the foil sends appropriate information to servo motors which cause the foils to rotate relative to the nacelle to achieve optimal angles of attack relative to the particular position of the nacelle at any given moment.

The invention discloses a method for automatically and designing a pipeline of a power plant, which is used for automatic design of the pipeline in power plant design. According to the method for automatically and designing the pipeline of the power plant, by taking a three-dimensional design system and a two-dimensional data management system as the basis and a two-dimensional engineering system diagram of the pipeline as a data source, under the support of the KKs coding technique and a related master control program, a three-dimensional model diagram of the pipeline is automatically designed and generated. The method for automatically and designing the pipeline of the power plant comprises an information acquisition step, a pipeline data generating step, a three-dimensional model design step and an outputting step. By adopting the technical scheme provided by the invention, the automatic design can be realized on the three-dimensional diagram of the pipeline, and thereby, manpower and material resources are saved, and moreover, the correctness is increased.

An advanced control system for a membrane bioreactor based wastewater treatment plant is disclosed. The disclosed control system comprises a membrane bioreactor (MBR) system and a microprocessor based controller that receives signals corresponding to selected measured MBR parameters and calculates or estimates one or more MBR calculated parameters including Membrane Conductivity (Fxc); and/or Oxygen Uptake Rate (OUR). The microprocessor based controller compares one or more calculated or estimated MBR parameters to prescribed setpoints or desired ranges and governs one or more pumps and valves in the MBR system to adjust the cleaning cycle the MBR system, the MBR flows in the MBR system, or the influent flow to the biological basin in response thereto.

The invention discloses an automatic oscillation-proof liquid box of a plant protection machine and belongs to the technical field of aerial plant protection of an unmanned aerial vehicle. The automatic oscillation-proof liquid box of the plant protection machine comprises a bracket fixed on the plant protection machine and a box body mounted on the bracket, wherein the bracket is provided with asupporting guide rail for supporting the box body; the box body comprises a fixed part which is fixed in the middle of the supporting guide rail, and movable parts which have a retractable structure and are symmetrically arranged at two sides of the fixed part; the box body is internally provided with a liquid level sensor; one end of each movable part is fixed and communicated with the fixed partand the other ends of the movable parts can slide along the supporting guide rail; the bracket is provided with an actuating mechanism for driving the end parts of the two movable parts to slide faceto face or in opposite directions along the supporting guide rail according to liquid level information of the liquid level sensor. The liquid level sensor is used for monitoring the liquid level information in the box in real time and transmitting a signal to the actuating mechanism; the actuating mechanism is used for driving the end parts of the movable parts of the liquid box to move and retract inward, and the space of the box body is reduced, so that liquid of the liquid box is controlled to be in a full state, and the problem that the gravity center of the unmanned aerial vehicle is not stable because the liquid in the box is oscillated is solved.

A control system for agricultural spraying is especially intended to be connected to an agricultural machine comprising a spraying ramp and having at least one spraying nozzle selectively activatable to spray an agricultural product. The system includes a set of cameras (42) suitable for being secured to the spraying ramp to acquire images (51) of the ground (12) on which the agricultural machine moves (10), a measuring system (59) for determining, in real time, distance information between a camera (42) and the ground (12), and a processing unit (44) communicating with the cameras (42) and said measurement system (59), the processing unit (44) being suitable for selectively controlling the spraying nozzles (34). The processing unit (44) is suitable for:

• • identifying a target plant (15) in a ground image (51) received from a camera (42);
  • determining information on the position of the target plant (15) in the image (51); on the basis of distance information between the camera (42) in question and the ground, of the orientation of its viewing axis, of a speed of advance of the agricultural machine and of said information on the position of said target plant (15) in the image (51), selecting at least one nozzle (34) to be activated to spray the target plant (15) with the agricultural product (26); determining an activation time of the or each selected nozzle; and transmitting an activation command to the or each nozzle (34) to trigger the spraying of said target plant (15).

An hand-operated safety switch with time delay (1) comprises a switching device (2) adapted to be anchored to a fixed part of the protection and provided with switching means (5) adapted to be connected to a plant to be controlled, an operating device (3) adapted to be anchored to a movable part of the protection for interacting with the switching means (5) upon the closing of the movable part. The switching device (2) comprises a locking mechanism (9) associated with the switching means (5) and adapted to selectively hold/release the operating device (3) and hand-operable unlocking means (10) operatively coupled with the locking mechanism (9) for unlocking the operating device (3) with a predetermined time delay with respect of the switching of the power supply circuit by the switching means (5). The switching device (2) has sensor means (13) operatively coupled with the switching means (5) for modifying their operative condition in function of an inlet signal. The operating device (3) also comprises a transmitter (14) adapted to send a proximity signal to be received as input by the sensor means (13) for controlling the switching means (5) when said transmitter (14) is place at a predetermined minimum distance from the sensor means (13). The locking mechanism (9) also comprises an inner passage (29) adapted to allow the passage of means for connecting the sensor means (13) with the switching means (5) avoiding the interference with the unlocking means (10).

The invention belongs to the field of automatic control of power plants, and particularly relates to a once-through boiler unit set coordinated control system and a design method thereof. The once-through boiler unit set coordinated control system comprises a coal pulverizing system, a once-through boiler, a steam turbine, a power sensor, a pressure sensor, an enthalpy value sensor, three PI controllers and a decoupling compensator, wherein the decoupling compensator is composed of eight PID controllers. According to the design method, an ultra-supercritical unit simplification nonlinearity dynamic model which is simple in structure and has an analytical form is established through mechanism analyzing. Linearization is carried out on the unit set model based on the small deviation method, and after inversion is carried out on the core model, the decoupling compensator is obtained, and a three-input and three-output coordinated control system of a once-through boiler unit set is established. Decoupling between the boiler side and the steam turbine side and between the fuel side and the water feeding side can be achieved, and the problem that an existing control method depends on the fuel and water ratio coefficient is solved.

The invention discloses an intelligent inspection robot for detecting running micro-leakage of power plant equipment and a detection method thereof. The intelligent inspection robot comprises an autonomous inspection platform, a mechanical arm, a field sensing module and an industrial control module, wherein the autonomous inspection platform is integrated with the mechanical arm, the field sensing module and the industrial control module, the field sensing module is fixedly installed at the tool end of the mechanical arm, the working orientation of the field sensing module can be adjusted through the mechanical arm, the industrial control module receives an instruction of a remote control center and controls the autonomous inspection platform to move to each area to be detected, and the collected field condition is fed back to the remote control center through a remote communication module after the collection of the field sensing module is completed. According to the intelligent inspection robot, the working orientation of the sensing module is controlled through the six-axis mechanical arm, so that a sensing system bypasses the shielding position or approaches to a point to be observed, the detection area is subjected to omnibearing inspection without a dead angle, illumination interference such as strong light or dim light on site is overcome, micro-leakage fault characteristics are accurately and quickly detected, and fault diffusion is avoided.

The invention discloses a multi-model predictive control design method for a supercritical thermal power generating unit coordination control system based on a spatial metric algorithm, is used for controlling a supercritical coal-fired unit machine-furnace coordination system, and belongs to the field of thermal power engineering and automatic control. At present, machine-furnace coordination control systems of most power plants are designed based on conventional PID; during large-range variable-working-condition operation, performance of the coordinated control system is degraded due to thecharacteristics of large hysteresis, nonlinearity and time variation of a machine-furnace coordinated controlled object, so that the problems of low load regulation rate, poor precision, large main steam pressure and steam temperature fluctuation and the like of a unit in the operation process are caused. According to the invention, the traditional predictive control is properly simplified to realize the simplified design of linear predictive control; secondly, specific sub-model selection is realized in combination with a space measurement algorithm; and finally, a weighted soft switching strategy with simple calculation is provided for the integration of a plurality of sub-controllers, so that load regulation performance of a 660MW unit and operation stability of the unit can be remarkably improved, and the engineering requirements are met.

The invention relates to an efficient and adjustable vacuum control method and system used for a power plant. The method comprises the steps that the vacuum target value of a real-time condenser is obtained by collecting, calculating and analyzing vacuum influencing parameters and conducting necessary correction; the vacuum target value is used as a regulating command through a control unit and sent to an efficient vacuum pump set executing mechanism, the input and output power of an efficient vacuum pump set is regulated, and target vacuum of a unit and the minimum power input of the vacuum pump set are obtained. Gas coolers are designed at the front end of a volume type main pump and at the front end of a water ring pump, and sucked gas is cooled so as to improve the efficiency of the pump set. Vacuum pump set capacity selection is carried out according to set discharge capacity corresponding standards, it is guaranteed that non-condensable gas of the set under different working conditions can be continuously pumped out, and smooth and steady adjustment of overall pumping flow of the pump set is realized by changing the input frequency of the main pump.