9 results about "Arithmetic expressions" patented technology

According to one aspect of a vehicle state amount estimation device and a vehicle control device according to the present invention, a sensor coordinate system acceleration and a sensor coordinate system angular velocity output by an inertial sensor are subjected to coordinate transformation to obtain a horizontal coordinate system acceleration and a horizontal coordinate system angular velocity, an estimated speed of a vehicle is obtained by integrating an arithmetic expression of a horizontal coordinate system including the horizontal coordinate system acceleration and the horizontal coordinate system angular velocity, and a vehicle body slip angle is estimated on the basis of the estimated speed. Thus, a reduction in accuracy of the estimation of the vehicle body slip angle based on the output of the inertial sensor can be suppressed even when the inertial sensor is mounted in a tilted orientation on the vehicle.

This apparatus includes: a strain sensor unit 5 attached to a peripheral surface 4f of a tie bar 4 provided on a toggle-link mold clamping mechanism 2 for slidably supporting a movable platen 3 to which a movable mold Cm is attached; and a molding machine controller 10 for obtaining an elongation L of the tie bar 4 corresponding to a mold gap Lm by a prescribed arithmetic expression in accordance with detection data De of the strain sensor unit 5 and obtaining the size of the corresponding mold gap Lm on the basis of the obtained magnitude of the elongation L of the tie bar 4. The mold gap Lm is obtained with high accuracy on the basis of the elongation L of the tie bar 4.

When a coating liquid (p) is discharged from a slit-shaped discharge port (33) of a coating nozzle (30) to a coated body (W) and the coating nozzle and the coated body are relatively moved in a coating direction (Y) to coat the surface of the coated body with the coating liquid, a width adjusting unit (50) for adjusting the width of the coating liquid discharged from the slit-shaped discharge port is provided. On the basis of a storage means (60) that stores arithmetic expressions in various coating condition data, a calculation means (62) calculates the difference in width between the width of the coating liquid discharged from the slit-shaped discharge port and the width of the coating liquid actually applied to the object to be coated, and on the basis of the calculated difference in width, the coating condition data of the object to be coated is calculated. The width adjustment means and the like are controlled by a control device (63).

The application provides a Solidity language source code obfuscation method, system, device and storage medium. The method comprises the following steps: reading the source code, constructing an abstract syntax tree and a control flow graph; replacing variable names in the source code, disturbing the source code layout and deleting auxiliary information; converting variable states in the source code, converting constants into function calls or arithmetic expressions to modify data fields in the smart contract; flattening global code control flow, control flow in the function body, and loop or branch basic blocks through the switch-case mode, and generating and introducing chaotic tautology opaque predicates based on the combination of Chebyshev and PWLCM one-dimensional chaotic mapping CPM in the loop or branch statement to hide the internal logic of the original program; the above method realizes the Solidity language source code obfuscation and generates the obfuscated Solidity code. The application generates the source code obfuscated version of the smart contract, which can greatly increase the cost of the smart contract being decompiled and improve the security of the content of the smart contract itself.

The invention discloses a memory controller and an operation method thereof, a storage system and an electronic system, and belongs to the technical field of storage. The memory controller includes: a storage device configured to store a firmware algorithm; the algorithm execution hardware comprises an operation expression, and the operation expression is obtained according to firmware algorithm configuration; and the processor is connected with the storage device and the algorithm execution hardware, and the processor is configured to call the algorithm execution hardware to execute the arithmetic expression to obtain an operation result of the firmware algorithm when the firmware algorithm is executed. According to the memory controller, the execution of the firmware algorithm can be realized through the combination of the arithmetic expression and the algorithm execution hardware, the execution of the firmware algorithm can be realized without preparing a special circuit, and the flexibility and the universality are relatively high. If the firmware algorithm needs to be updated, execution of the updated firmware algorithm can be realized only by reconfiguring the arithmetic expression included in the algorithm execution hardware according to the updated firmware algorithm, a circuit does not need to be changed, and the cost is relatively low.

The application provides a seismic trace header word calculation method and device based on an expression, and a medium, and belongs to the field of seismic data processing.The method comprises the following steps: first, reading a seismic trace header data in a seismic trace order; second, calculating the value of a conditional expression one by one according to the trace header word value contained in the current seismic trace header data; third, judging whether the value of the conditional expression is true, if yes, entering the fourth step, otherwise returning to the first step; fourth, calculating the value of an arithmetic expression according to the current trace header word value, generating a new trace header word or updating an existing trace header word value; fifth, judging whether there is still seismic trace header data to be processed, if yes, returning to the first step, otherwise entering the sixth step; and sixth, ending.The application supports flexible selection of qualified trace header words for calculation, supports multiple types of arithmetic calculation functions for arbitrary combination calculation, and supports updating of existing trace header words and flexible addition of new trace header words.

Provided is a program and computer-implemented method of obfuscating a software code, comprising adding a conditional branch instruction to the software code which, when executed, causes evaluating an opaque predicate (PT, PF, P?). The method comprises a step of generating the opaque predicate which includes performing a multiplication operation having as operands two mixed Boolean-arithmetic expressions. Other embodiments disclosed.

Provided is a portable billing device and method that enables electronic bill generation from calculator-style arithmetic expressions without requiring explicit product registration or mode switching. The device comprises a compact display, a calculator keyboard, a processing subsystem with memory, and optionally a printer and communication subsystem. During normal operation, the device functions as a standard four-function calculator, storing all key presses and corresponding operators in an operation history. When a user actuates a designated billing key, the device compiles a structured bill with calculated totals, which may be printed or electronically transmitted to customers. The device supports optional features including customer identification, credit sales tracking, change calculation, and cash balance reconciliation, all while maintaining the simplicity and familiarity of calculator operation.