188 results about "Permissible Value" patented technology

The invention relates to the technical field of running state monitoring of wind generating sets, in particular to a system and a method for evaluating the running state of a wind generating set. The evaluating system mainly comprises a monitoring module, a quantifying module, a weight confirmation module and an evaluating module; data monitored in real time by a wind generating set control system are utilized as the input of the evaluating system of the real-time running state; then the data are quantified to obtain a real time deterioration degree of each evaluating index; finally, when the deterioration degree of a single item evaluating index and a permissible value have greater deviation, the serious evaluating result is directly given, otherwise, the weight module and the evaluating module are used for calculating an evaluating result of the running state of the generating set, and the evaluating result is used as the output of the system. The invention provides scientific basis for state maintenance of the wind generating set, and provides technological supports for ensuring high-efficient, reliable and safe running of the wind generating set, evaluating and forecasting the operational reliability of an electric power system of a windy electric field, and has important engineering application value.

A method and an arrangement for controlling a drive unit are suggested wherein a maximum permissible value of an output quantity is determined. This maximum permissible value is compared to the actual value and, when the permissible value is exceeded by the actual value, reaction measures are initiated. The maximum permissible value is filtered at least in one operating state in accordance with filter means including a filter and a dead zone member. Furthermore, the maximum permissible value is continuously reduced in dependence upon the approaching of at least one quantity to a limit value. This quantity represents an operating state.

In a computerized accounting system, a method of tracking and analyzing financial transaction information associated with accounts, without the need for addition account segments to define the account number of each account, includes defining at least one transaction code, each transaction code having a plurality of permissible values, receiving a transaction having an amount and being associated with an account, and associating the transaction with a project and with a value from the plurality of permissible values for the at least one transaction code. Another method includes subdividing the total amount of the transaction into two or more portions, each portion being associated with a project and with respective values of the permissible values for a plurality of transaction codes. Use of the transaction codes results in improved reporting and enhanced data analysis.

A maximum dischargeable current Idmax obtained when electric power output from a battery is increased from a battery current Ib and a battery voltage Vb at present under internal resistance R at present (an operating point 510) until the battery voltage reaches a lower limit voltage Ve (an operating point 520), is shown as follows: Idmax=Ib+(Vb−Ve)/R. Therefore, in accordance with multiplication of the lower limit voltage Ve and the maximum dischargeable current Idmax, it is possible to predict maximum dischargeable electric power at which the battery voltage does not become lower than the lower limit voltage even if discharge limitation is temporarily relaxed, as a relative value with respect to the battery voltage and the battery current at present. When the discharge electric power limitation for the battery (the power storage device) is temporarily relaxed in accordance with a discharge request made by a load, a discharge electric power permissible value is set to correspond to the maximum dischargeable electric power, such that the output voltage of the power storage device does not fall outside a controlled voltage range from the lower limit voltage to an upper limit voltage.

A semiconductor integrated circuit is provided to allow a stable operation even in a short distance where an IC card is in contact with a reader/writer. In a semiconductor integrated circuit for a noncontact IC card that obtains driving power supply by carrying superimposed data, obtained voltage does not become overvoltage and data can be demodulated with stability regardless of a change in communication distance. Inputs of a system (including a rectifier circuit and a power supply circuit) producing power supply from an antenna coil of the IC card which receives radio waves transmitted from a reader/writer, and of a demodulator circuit are connected via a path separated from the output of the rectifier circuit. Thus, a power supply voltage range can be set within a permissible value and a rate of change in input of the demodulator circuit can be obtained regardless whether the communication distance is short or long.

Provided is a numerical controller having a machining curve creating function. A command point sequence is divided into a plurality of segments and a segment curve corresponding to each segment command point sequence is created. The segment curve is created so that a distance of the segment curve from the segment command point sequence is within a permissible value set in advance, and the maximum number of command points are included between a starting point and an ending point of the segment command point sequence. This process of segment curve creation is repetitively executed from the starting point to the ending point of the command point sequence to create a machining curve. Subsequently, the machining curve is interpolated and drive axes of a machine tool are moved to the interpolated positions on the machining curve.

The invention discloses a method for detecting wafer warp degree, which relates to a detection process in the field of semiconductor. The detecting method comprises the following steps: two detecting lines which are vertical and intersected with a wafer center are selected from the surface of a wafer; and a plurality of detecting points are selected from each detecting line; before the wafer carries out certain processing procedure, the detecting device is used to measure a reference distance; after the wafer carries out certain processing procedure, the detecting device is used to measure the measuring distance; the measuring distance subtracts the corresponding reference distance to obtain a difference value of each measuring point; if the difference value is within the permissible value range, the difference values obtained respectively by two detecting points on the two detecting lines on the same circumference of the wafer are compared; if two difference values are same, the warp of the wafer is proved not to influence the subsequent processing procedure; and if the two difference values are different, the warp of the wafer is proved to influence the subsequent processing procedure. The detecting method provided by the method can effectively and timely detect whether the wafer warp is even or not, and avoid abnormal aligned mark position in the subsequent processing procedure.

A torque control method and device on the condition of superlift of a crawler crane takes the ratio of actual loading pressure and maximum permissible value of the crane main luffing rod as the main luffing percentage A, and the ratio of pull sum for crane superlift counterweight upgrading fuel tank and counterweight as the using percentage B to realize the torque control according to the relation of A and B. It also provides a method of achieving the above device, which includes: buzzers, lights, pull sensors set on the main luffing rod, pressure sensors on the superlift counterweight fuel tank, the controller coupled with the above components and the interface coupled with controller.

A power frequency zero-flux mini-current sensor for capacitive equipment dielectric loss on-line monitoring comprises a working magnetic core 1, wherein a test coil 3 is winded round the working magnetic core 1, a secondary side coil 2 is winded round the test coil 3 in the inverse direction, shielding layers 4 are arranged between the secondary side coil 2 and the test coil 3, and the test coil 3 and the working magnetic core 1, the test coil 3 is connected with a compensation circuit module 5, the output end of the compensation circuit module 5 is connected with one end of the secondary side coil 2, the other end of the secondary side coil 2 is connected with an output circuit module 6, the two ends of the test coil 3 generate induced potential, the induced current is added to the output end of the compensation circuit module 5 to generate secondary current for the secondary side coil 2, the compensation circuit module 5 is used to test the potential difference of the test coil 3, the magnetic flux in the working magnetic core is almost equal to zero; and if the test value deviates the permissible value, the working magnetic core can be adjusted automatically to keep in almost zero-flux state, and the mini-current sensor has high reliability and is characterized by simple structure, little production difficulty and low cost.

The present invention provides a system and method for resolving a test generation problem involving constraint resolution problems where a verification environment includes constraints that are suitable for resolution using one type of solver for a first domain and other constraints that are suitable for resolution using a different solver in a second domain. The invention further comprises variables and, in instances where at least one variable is in each of the first and second domains, using these solvers to restrict the set of permissible values of variables to be consistent in multiple domains, preferably in all relevant domains.

A constraint resolution problem is divided into clusters of constraints connected within a domain, and connected clusters of clusters that are connected through shared variables that are subject to constraints in more than one cluster.

A preferred solver is applied to constraints in each of various domains such that constraints in multiple clusters and domains in a connected cluster are consistent for connected constraints in a domain, and preferably all constraints in all clusters in all domains within the connected cluster are consistent.

There included are a plurality of light receiving sections (121, 122) for receiving a plurality of optical signals (R1, R2) and respectively converting the received optical signals to a plurality of electrical signals (r1, r2); a first calculating section (130) for subjecting the plurality of electrical signals (r1, r2) to a process of canceling interference components occurring due to propagation of the plurality of optical signals through space; and a second calculating section (140) for calculating, with respect to each of the plurality of electrical signals whose interference components have been canceled by the first calculating section, whether or not a distortion occurring due to optical beat interference has a value less than or equal to a predetermined permissible value.

During sulfur release control in an internal combustion engine, a rich period and a lean period are alternately repeated. The air-fuel ratio of exhaust gas is controlled toward a target air-fuel ratio (14.3) by adding fuel from a fuel adding valve in the rich period. An ECU determines whether the actual air-fuel ratio of exhaust gas detected by an air-fuel ratio sensor has reached a stoichiometric air-fuel ratio each time the rich period ends at which addition of fuel from the fuel adding valve is stopped. A counter counts the number of times the ECU has determined that the actual air-fuel ratio of exhaust gas has not reached the stoichiometric air-fuel ratio. When the value of the counter becomes greater than or equal to a permissible value, the ECU determines that there is an abnormality in the sulfur release control.

The invention discloses a bidirectional active power disturbance island detection method. The method comprises the following steps of: adding the disturbance quantity of positive and negative delta I into grid-connected current; calculating an absolute value of difference between Uold and Unew; comparing the absolute value of the difference between the Uold and the Unew with a set maximum permissible value of voltage difference between the Uold and the Unew; and if frequency that the absolute value of the difference between the Uold and the Unew is continuously greater than the set maximum permissible value of the voltage difference between the Uold and the Unew is greater than or equal to a set value, detecting an island phenomenon. By adoption of the bidirectional active power disturbance island detection method, the island phenomenon can be timely and effectively detected, and harmonic wave is slightly introduced to a common coupling point.

An electronic device with software protection for runtime software. At least one function block (4-11) of the runtime software has a priority value. A maximum permissible value for the runtime software is retrievably stored in one device (12). An arithmetic logic unit (1) determines the total value for the function blocks of the runtime software and a display signal (14) is output if the total value exceeds the maximum permissible value. Function blocks and value blocks can have an OEM identification code, such that the system manufacturer and OEM can, independently of each other, create a software protection.

Provided is a field winding type generator-motor capable of minimizing cost increase and structure modification while preventing a failure due to a temperature rise, without mounting a temperature sensor. The field winding type generator-motor according to the present invention includes: a dynamo-electric machine that has a field winding; a field current detecting section for detecting field current; a field current restriction deciding section for deciding whether or not the decision value has reached a predetermined decision threshold value by calculating a decision value based on the field current detected by the field current detecting section; and a field current controller for controlling the field current flowing in the field winding so that the field current is restricted to a predetermined permissible value in a case where the field current restriction deciding section decides that the decision value has reached the predetermined decision threshold value.

The present invention provides an electric motor control device capable of reducing the burden on the operator and automatically adjusting control parameters to achieve stable operation, and a method for automatically adjusting the device. A control-parameter automatic adjustment device, wherein there are provided an adjustment method and a device for repeating automatic adjustment, within permissible value ranges for vibration amplitude and overshoot set by the user, until appropriate control parameters are obtained, while detecting motor vibration while the motor is stopped and motor vibration while the motor is operating and suppressing motor vibration.

The following techniques for word-level networks are presented: constraints solving, case-based learning and bit-slice solving. Generation of a word-level network to model a constraints problem is presented. The networks utilized have assigned, to each node, a range of permissible values. Constraints are solved using an implication process that explores the deductive consequences of the assigned range values. The implication process may include the following techniques: forward or backward implication and case-based learning. Case-based learning includes recursive or global learning. As part of a constraint-solving process, a random variable is limited to a single value. The limitation may be performed by iterative relaxation. An implication process is then performed. If a conflict results, the value causing the conflict is removed from the random variable by range splitting, and backtracking is performed by assigning another value to the random variable. A procedure is provided for efficiently solving bit-slice operators.