5results about How to "Accurate arrival" patented technology

The utility model relates to video monitoring technical field discloses an alarm state video monitoring device, including fixed box, the fixed box outer wall fixedly connected with fixed column, the fixed box inner wall top fixedly connected with the cylinder, the cylinder drive end fixedly connected with U type board, U type board lower fixedly connected with first lifting box, the fixed box inner wall right side fixedly connected with first rack, first rack has the first gear of engagement connection, the left end of first gear has the second rack of engagement connection, the second rack left end fixedly connected with second lifting box, second lifting box is connected with third lifting box through lifting assembly. In the utility model, through the linkage design of multiple lifting boxes, can realize the flexible lifting function of monitoring device, make overhauls or maintenance more convenient, through the cooperation between bevel gear and bevel gear, can realize the reciprocating rotation function of camera wide range, covers more broad visual field area.

The application discloses an underwater pipeline external detection robot system and a detection method. The system comprises a work mother ship, a drive device, a laying device, a robot, a multiple sensing device, a searchlight, a protective frame, a tail rudder, a main propeller, a side propeller, a clamping jaw, a body signal receiver, a detection rod, a plurality of laser detection heads, a detection wheel, a landing frame, a laying device, a camera, a signal transmitting and receiving device, an electronic bin, a control device, a motion control module, a detection module and a signal module. The application can realize high-quality underwater pipeline surface damage detection under different water depths and different illumination environments.

The utility model provides a combined highway subgrade gravel pile and relates to the technical field of CN214194485U. The combined highway subgrade gravel pile comprises a vibroflot main body and a flange, convex teeth are arranged on the surface of the vibroflot main body, the vibroflot main body and the convex teeth are connected in a welding mode, a centrifugal shaft main body is arranged at the bottom of the vibroflot main body, and the vibroflot main body and the centrifugal shaft main body are connected in a tight sliding mode. The spiral blades are arranged on the surface of the centrifugal shaft body, the centrifugal shaft body and the spiral blades are connected in a seamless welding mode, the six-edge plum blossom-shaped structure is adopted for the head of the guide rod, the vibroflotation blades are additionally arranged, and the spiral blades are arranged on the surface of the centrifugal shaft body, so that the comprehensive performance is improved, the adaptability is enhanced, and the centrifugal shaft is suitable for viscous or water-containing soil layers; the failure rate is reduced through structure optimization, efficient hole forming, continuous dumping and stable vibration are achieved through cooperation of the mechanical advantages of the six-edge structure, the crushing capacity of the vibroflotation blades and the dumping function of the spiral blades, and the six-edge vibroflotation machine is particularly suitable for engineering construction under the complex geological condition.

This application relates to the field of stepper motor control, and in particular to a trigonometric function acceleration and deceleration control method for stepper motors. The main steps include: obtaining the desired movement distance and expected response rate of the stepper motor; initializing the acceleration and deceleration control parameters of the stepper motor; based on the acceleration and deceleration control parameters, simulating the jerk of the stepper motor as a sine curve using a sine function to obtain a jerk equation describing the relationship between the rate of change of the stepper motor's acceleration and time; numerically integrating the jerk equation to obtain a velocity equation, taking the first difference of the velocity equation as the actual velocity equation, which describes the relationship between the motor speed and time; and controlling the stepper motor according to the velocity planning curve. This method features strong real-time performance, simple calculation, continuous jerk, different response speeds for different distances, and enables the stepper motor to accurately reach the target point.