3results about How to "The control system is stable" patented technology

The utility model belongs to positioning mechanism technical field discloses a simple and easy long material car positioning mechanism, including T type base, T type base includes installation area and guide area, both sides of installation area all are provided with buffer assembly, the central position of installation area is fixedly installed with first support, one side of first support is installed with the pneumatic cylinder, the output end transmission of pneumatic cylinder is installed with the clamping arm, the other side of first support is installed with the connecting plate, at least two proximity switches are installed on the connecting plate, the pneumatic cylinder still has single valve and is connected with proximity switch, and the proximity switch and proximity switch are electrically connected between single valve, the guide area still installs the limit component, this mechanism simple structure only adopts single pneumatic cylinder as power source, reduces the complicated of structure, and control system is more stable, and saves the very big cost, improves equipment work efficiency, and then installs maintenance more simple, convenient.

The present application relates to the technical field of chassis suspension system testing, and specifically discloses a vehicle unsprung mass measurement method, device, equipment and storage medium, the method comprising: controlling a target vehicle to move vertically up and down at a horizontal plane, the stiffness characteristic of the suspension system of the target vehicle being linear; obtaining spring elasticity and wheel normal pressure of at least two sampling points in the vertical up-and-down movement process of the target vehicle, the wheel normal pressure being the pressure given to the vehicle by the horizontal plane in the vertical direction; determining the mapping relationship between the spring elasticity and the wheel normal pressure based on the obtained spring elasticity and wheel normal pressure; calculating the target wheel normal pressure corresponding to zero spring elasticity according to the mapping relationship, and calculating the unsprung mass according to the target wheel normal pressure. The present application improves the accuracy of unsprung mass measurement.

This invention discloses an efficiency optimization control method for a high-speed brushless DC motor system based on time-sharing commutation. It establishes a time-sharing commutation mode to determine the variation law of the motor phase current; obtains the turn-on offset angle and turn-off offset angle based on the maximum electromagnetic power using offline numerical solutions; designs the input layer, hidden layer, and output layer structure of an RBF neural network; performs offline pre-training of the RBF neural network using prior information and online training; updates the neural network parameters by acquiring real-time motor system efficiency information; and applies the optimal turn-on offset angle and optimal turn-off offset angle output by the neural network to the time-sharing commutation control, thereby improving the motor's operating efficiency. The advantages of this invention are that it is not limited to the 120° conduction mode of the brushless DC motor windings, but establishes a time-sharing commutation mode; and it utilizes the RBF neural network to quickly optimize the turn-on offset angle and turn-off offset angle, thereby improving the motor system efficiency.