19 results about "Alternative control" patented technology

Phase-redundant voltage regulator device (300) comprising: a plurality of controller phases (126A, 126B, 227A, 227B, 227C, 227D), each containing an electrically connected controller (116) to receive an input voltage at a controller input (240) and to provide a corresponding output voltage at a controller output (242); a control logic (366); and a set of phase groups of the plural controller phases, which contains a first and a second phase group (374, 376), wherein each phase group contains: a common controller input (V IN ), which is electrically connected to the control inputs of the phase group; a common controller output (V1; V2) which is electrically connected to controller outputs of the phase group; at least one redundant control phase; at least one defined controller phase (126A, 126B) from the plurality of controller phases; at least one replacement controller phase (227C; 227D) of a set of replacement controller phases; and a multi-phase controller (MPC) (122) electrically connected to each specified controller phase of the phase group, the MPC being configured to provide phase fault signals (308A, 310A; 308B, 310B) and a shared current phase control signal (I SHARE )(304A, 306A; 304B, 306B), which were received from each specified controller phase of a corresponding phase group, is transmitted to the control logic (366); wherein the set of substitute controller phases from the plural controller phases contains a first and a second substitute controller phase (227A, 227B), wherein each substitute controller phase contains (227A, 227B, 227C, 227D): a secondary output OR switching unit (118A) which is electrically connected and configured to limit the current flow into a secondary output (206) of the substitute controller phase; a first output switching unit (217) configured to electrically connect the controller output (242) of the substitute controller phase to a first common controller output (V1) in response to a first phase enable signal (316A; 316B); and a second output switching unit (219) configured to electrically connect the controller output (242) of the substitute controller phase to a second common controller output (V2) in response to a second phase enable signal (318A; 318B); where the control logic (366) is electrically connected to: MPCs (122) of each phase group (374; 376) of the set of phase groups, wherein the control logic is configured to the I SHARE -receives phase control signals (304A, 306A; 304B, 306B) from the MPCs and exchanges phase error signals (302A, 308A, 310A; 302B, 308B, 310B) with them; and Substitute controller phases (227A, 227B) of the set of substitute controller phases, wherein the control logic is configured to activate phase enable signals (316A, 318A; 316B, 318B) to the substitute controller phases (227A, 227B) as well as I SHARE -Transmits phase control signals (314A; 314B) to these and receives phase error signals (312A; 312B) from them; wherein the control logic is configured to electrically connect a substitute controller phase (227A, 227B) to a phase group (374; 376) containing a failed controller phase (126A, 126B) in response to receiving a phase fault signal (308A, 310A; 308B, 310B) from an MPC (122).

This invention discloses a method for early warning and decision-making regarding earth pressure risk in subway shield tunneling construction, relating to the field of shield tunneling technology. The method includes the following steps: S1, acquiring data to construct a control benchmark system and generating a weight vector; S2, collecting datasets and conducting evaluations to obtain comprehensive state indicators, then benchmarking them against the control benchmark system to identify earth pressure anomaly types, determine risk control levels, and match alternative control measures; S3, constructing an optimized decision-making model and calculating the cost-risk balance coefficient; S4, prioritizing each alternative control measure, generating early warning signals and control decision schemes, and simultaneously collecting effect data; S5, dynamically iteratively updating the control benchmark system and the optimized decision-making model based on the effect data. This invention simplifies the emergency response process for earth pressure risk by constructing an early warning and decision-making method for earth pressure risk in subway shield tunneling construction, improving the accuracy and response speed of earth pressure risk control.

The utility model discloses a low energy consumption water purification device. The low energy consumption water purification device includes the filter mechanism for filtering, the desalination mechanism for desalination and the disinfection mechanism for disinfection, the desalination mechanism includes main desalination pipe, vice desalination pipe, diaphragm pump, nanofiltration membrane component, membrane capacitance deionization device and valve component for the water flow into membrane capacitance deionization device or vice desalination pipe of alternative control, the filter mechanism and disinfection mechanism are connected through main desalination pipe, diaphragm pump, nanofiltration membrane component and membrane capacitance deionization device are installed in sequence on main desalination pipe, vice desalination pipe is provided with on main desalination pipe in parallel with membrane capacitance deionization device. The low energy consumption water purification device of the utility model can select desalination path according to TSD, avoids unnecessary equipment starting, and saves energy consumption.

The invention discloses a networked automobile-oriented control information value evaluation method based on model prediction, and relates to the technical field of vehicle control, and the method mainly comprises the steps: obtaining control information which is sent by a front vehicle and comprises a plurality of future time slot prediction state sequences of the front vehicle; taking the control information as known input, solving a model prediction control problem taking minimization of a preset objective function as a core, obtaining a first optimal control sequence, and calculating a first control performance index; under the condition that the control information is assumed to be missing, generating an alternative control information sequence through extrapolation based on the historical control information; taking the alternative control information sequence as known input, solving the model prediction control problem to obtain a second optimal control sequence, and calculating to obtain a second control performance index; and calculating a difference value between the first control performance index and the second control performance index, and defining the difference value as an information value of the control information. According to the invention, dynamic quantification of control information value and intelligent scheduling of communication resources are realized.

The invention provides a multi-terminal collaborative power grid interaction control method and system, and the method comprises the steps: S1, querying terminals in a power grid system and built-in instruments of the terminals, obtaining power parameters based on the built-in instruments, and constructing a data structure body of each terminal; s2, determining relevancy among different terminals according to the data structure body of each terminal; s3, for any terminal, selecting the terminal of which the relevancy with the terminal reaches a preset relevancy threshold to obtain a terminal set; s4, analyzing the data structure body of any terminal, and determining a control demand and an alternative control instruction; and S5, taking the terminal with the control requirement as a target terminal, querying a terminal set corresponding to the target terminal, determining the other-end influence quantity of each alternative control instruction in the terminal set, and determining a final control instruction according to the other-end influence quantity.

A method for controlling a roadwheel actuator (RWA) of a vehicle includes, using one or more processors, determining an expected cornering state of the vehicle by determining at least one of an expected yaw rate an expected lateral acceleration of the vehicle, determining an actual cornering state of the vehicle by determining at least one of an actual yaw rate and an actual lateral acceleration of the vehicle, determining a cornering state error based on the expected cornering state of the vehicle and the actual cornering state of the vehicle, generating an RWA control signal based on the cornering state error, and controlling at least one function of the vehicle using the RWA control signal.

This software update system updates vehicle control software that is executed by an electronic control device mounted on a vehicle and controls the vehicle. The software update system comprises: a monitoring unit that monitors an operation state of an alternative control means for controlling the vehicle in place of the vehicle control software, and acquires a log of the vehicle control software in a period including at least a time point before an operation start time point of the alternative control means when the alternative control means operates; an update necessity determination unit that determines necessity of update of the vehicle control software on the basis of the log acquired by the monitoring unit; and a distribution unit that, when it is determined by the update necessity determination unit that update of the vehicle control software is necessary, distributes update software for updating the vehicle control software to the vehicle.

A secondary control system configured to be provided between a primary control system and at least part of a main system, wherein the primary control system is configured to provide control instructions to the main system, the secondary control system comprising: a monitoring module to determine a current state and / or a future state of the main system; a control switching module configured to switch control of the main system from the primary control system to the secondary control system, wherein the control switching module is configured to: allow the control instructions from the primary control system to be provided to the main system, prevent the control instructions from being provided to the main system, or provide alternative control instructions to the main system.

The invention belongs to the technical field of vehicle stability control, and particularly relates to a vehicle stability control strategy optimization method based on a fuzzy logic theory. The method comprises the following steps: firstly, determining a control strategy alternative scheme, an evaluation criterion and a decision maker according to a preset target, calculating each attribute evaluation value and constructing an initial evaluation matrix; secondly, language evaluation given by a decision maker is converted into an intuitionistic fuzzy value; then, determining the weight of each decision maker based on a trust performance function, determining the weight of each evaluation index based on an entropy weight method, and performing normalization processing on the initial evaluation matrix; and finally, based on the constructed evaluation matrix, the decision maker weight and the evaluation index, the TOPSIS method is combined for application, alternative control strategies are sorted and selected, an optimal scheme is determined, an evaluation result has very high robustness, and the sorting problem that a traditional TOPSIS method is difficult to process information containing uncertainty and is easily influenced by subjective factors is avoided.

A method (200) of controlling a technical system comprises: providing (211) a reinforcement learning (RL) agent, which has been trained to control the technical system in a nominal operating condition; using the RL agent, generating (212) a tentative control action to be applied to the technical system in its current state; and assessing (213) whether a current operating condition of the technical system is nominal. If the current operating condition of the technical system is nominal, the tentative control action is applied (214). If instead the current operating condition of the technical system is non-nominal, an alternative control action, which approximates the tentative control action and is consistent with the non-nominal current operating condition, is applied (216).

The invention relates to a method for operating a drive system (1), wherein the drive system (1) has an electric machine (2), power electronics (7) associated with the electric machine (2) and a control device (8), wherein the control device (8) has a computing unit (12) and a plurality of gate drive circuits (13, 14), wherein a control command is determined by means of the computing unit (12) as a function of an actual rotational speed of the electric machine (2) and wherein the control command contains at least one item of information about a preset safe operating state in the power electronics (7). It is provided that a preset number of preset messages is sent by the computing unit (12) to the gate drive circuits (13, 14) in a preset sequence, that a complete traversal is verified by the gate drive circuits (13, 14) in terms of the sequence, number and content of the messages and that the control command is stored and / or executed in the gate drive circuits (13, 14) only upon successful verification, otherwise a preset alternative control command is stored and / or executed in the gate drive circuits (13, 14).

An improved method of low-voltage ride-through protection of a coal feeder based on DCS logic control.The prior art has frequent large changes in the rotating speed of the coal feeder during coal cutting; when the rotating speed signal detected in the coal feeder changes greatly, the internal program judges that the rotating speed is abnormal, which causes the coal feeder to trigger a trip signal by mistake, and brings great safety hazards to the normal operation of the unit.The present application comprises the following steps: (1) an internal program modification method of the coal feeder microcomputer board; (2) a low-voltage judgment method of the coal feeder control loop; (3) a logic configuration method of the self-starting of the low-voltage fault of the coal feeder; (4) a fault simulation method of the internal program of the coal feeder; (5) a setting method of the internal parameters of the frequency converter of the coal feeder; an alternative control method of the low-voltage ride-through control device of the coal feeder is proposed, which solves the problem of the coal feeder tripping by mistake due to the rotating speed during coal cutting.The present application is used for the improved method of low-voltage ride-through protection of the coal feeder based on DCS logic control.

The invention relates to an alternative control method for a steer-by-wire system. A method for controlling a road wheel actuator (RWA) of a vehicle includes using one or more processors: determining an expected turning state of the vehicle by determining at least one of an expected yaw rate and an expected lateral acceleration of the vehicle; determining an actual turning state of the vehicle by determining at least one of an actual yaw rate and an actual lateral acceleration of the vehicle; determining a turn state error based on the expected turn state of the vehicle and the actual turn state of the vehicle; generating an RWA control signal based on the turn-over state error; and controlling at least one function of the vehicle using the RWA control signal.

The invention relates to a process for fabricating an integrated circuit (IC) comprising a bidirectional field-effect transistor (1), comprising the following steps: (I) providing a stack of layers (EC) deposited on a substrate (SUB); (II) fabricating the bidirectional transistor (T1) by forming: • at least two gates (G1, G2) in the barrier layer (C1); • a first source (S1) and a second source (S2); • and a channel region (ZC) formed in the channel layer (C2); (III) fabricating, on the same stack of layers (EC), a first bias transistor (Ta) and a second bias transistor (Tb), the bidirectional transistor, the first bias transistor (Ta) and the second bias transistor (Tb) being monolithic; (IV) electrically connecting: the source (Sa) of the first bias transistor (Ta) to the substrate, and the source (Sb) of the second bias transistor (Tb) to the substrate (SUB).

The present application belongs to the field of control of vacuum hole filling machine, and relates to a kind of integrated vacuum hole filling machine filling control method and system.The method is based on the hole site density distribution diagram of circuit board and is divided into zones, and an independent prediction and control time domain is set for each zone, and a state vector including the predicted filling volume, slurry flow resistance coefficient and vacuum chamber leakage rate is constructed;In the control process, a plurality of groups of scraper pressure and speed alternative control sequences are generated using a dynamic model, the filling volume deviation, overflow risk and control vector variation of each sequence in the prediction time domain are evaluated by a weight function, a quadratic performance index function is constructed in this way, the optimal control sequence is obtained by solving the quadratic performance index function and the first instruction is executed, and the state vector is updated using a double cycle mechanism to complete the closed-loop control.The present application solves the problem of cavitation and overflow caused by uneven hole site density, and ensures the consistency and stability of hole filling quality.

A method for controlling a road wheel actuator (RWA) of a vehicle includes, using one or more processors: determining an expected cornering state of the vehicle by determining at least one of an expected yaw rate and an expected lateral acceleration of the vehicle; determining an actual cornering state of the vehicle by determining at least one of an actual yaw rate and an actual lateral acceleration of the vehicle; determining a cornering state error based on the expected cornering state of the vehicle and the actual cornering state of the vehicle; generating an RWA control signal based on the cornering state error; and controlling at least one function of the vehicle using the RWA control signal.

The invention belongs to the technical field of vehicle-mounted intelligent control, and discloses an automobile control method and device based on combinatorial search, and the method comprises the steps: obtaining user voice data, carrying out the intention analysis, and obtaining an optimization target and a constraint condition; generating a formalized task description according to the optimization target and the constraint condition; obtaining a user portrait, vehicle environment data and vehicle state data, and constructing a state space vector; performing combined search in a preset atomic action library according to the formalized task description and the state space vector by utilizing a heuristic graph search algorithm to obtain a plurality of alternative control strategies; calculating a comprehensive score of each alternative control strategy by adopting a multi-target evaluation algorithm; and determining and executing a target control strategy according to the comprehensive score or the user selection instruction. According to the method and the device, feasible and cross-domain alternative control strategies can be generated in the preset atomic action library which can be executed by the vehicle and the multi-dimensional environment state space.

To quickly update vehicle control software used for controlling a vehicle when an event requiring improvement occurs.SOLUTION: The software update system 100 includes a monitoring unit 61, an update necessity determination unit 31, and a distribution unit 11. The monitoring unit 61 monitors an operation status of an alternative control means that controls the vehicle in place of the vehicle control software, and acquires a log of the vehicle control software in a period including at least a time point before an operation start time point of the alternative control means when the alternative control means operates. The update necessity determination unit 31 determines the necessity of updating the vehicle control software based on the log acquired by the monitoring unit 61. When the update necessity determination unit 31 determines that the update of the vehicle control software is necessary, the distribution unit 11 distributes the update software for updating the vehicle control software to the vehicle.SELECTED DRAWING: Figure 1

A secondary control system configured to be provided between a primary control system and at least part of a main system, wherein the primary control system is configured to provide control instructions to the main system, the secondary control system comprising: a monitoring module configured to determine a current state and / or a future state of the main system; a control switching module configured to switch control of the main system from the primary control system to the secondary control system, wherein the control switching module is configured to: allow the control instructions from the primary control system to be provided to the main system if the determined current or future state satisfies a predefined set of conditions, and prevent the control instructions from being provided to the main system if the determined current or future state fails to satisfy the predefined set of conditions, and provide alternative control instructions to the main system, when the determined current future state fails to satisfy the predefined set of conditions; wherein the secondary control system is reconfigurable, when in situ between the primary control system and the main system, to change at least one of: the predefined set of conditions and the predefined alternative control instructions provided to the main system.