1. Status of Domestic Steering Gears Manufacturing China has more than 30 years experience and practice in the field of auto steering gear manufacturing. The main products are worm-and-roller type, crank-and-pin type ...1. Status of Domestic Steering Gears Manufacturing China has more than 30 years experience and practice in the field of auto steering gear manufacturing. The main products are worm-and-roller type, crank-and-pin type and recirculating ball (with constant ratio) type展开更多
In ships having two rudders, an angle error exists if there is a difference in structural and electrical parameters in two steering gear systems. Such an error also results in reduced efficiency of ship maneuverabilit...In ships having two rudders, an angle error exists if there is a difference in structural and electrical parameters in two steering gear systems. Such an error also results in reduced efficiency of ship maneuverability during navigation. For the sake of reducing the angle error, a synchro-ballistic control approach based on cloud model is proposed in this paper. First, the mechanism model of steering gear system is introduced. Second, the structure of synchro-control system of twin-rudder is proposed based on the master-slave control strategy. Third, synchro-ballistic controller based on cloud model is designed to solve the nonlinearity and uncertainty of system. Finally, the designed controller is tested via simulation under two different situations. The simulated results demonstrate that this method is simple and has stronger robustness against the variation of states and parameters of plants. Hence, the validity and reliability of the method is proved for synchro-control of two rudders, which is a significant engineering application.展开更多
According to statistics, there are more than 50 manufacturers of auto steering gear in China now, most of which are of annual output below 10,000 units. In 1993, the national total output of various kinds of steering ...According to statistics, there are more than 50 manufacturers of auto steering gear in China now, most of which are of annual output below 10,000 units. In 1993, the national total output of various kinds of steering gear is about 1,400000 units. There are six major ones among all these manufacturers.展开更多
文摘1. Status of Domestic Steering Gears Manufacturing China has more than 30 years experience and practice in the field of auto steering gear manufacturing. The main products are worm-and-roller type, crank-and-pin type and recirculating ball (with constant ratio) type
基金supported by National Natural Science Foundation of China (No.51079033,No.60704004)the Fundamental Research Funds for the Central Universities (No.HEUCFR1009)
文摘In ships having two rudders, an angle error exists if there is a difference in structural and electrical parameters in two steering gear systems. Such an error also results in reduced efficiency of ship maneuverability during navigation. For the sake of reducing the angle error, a synchro-ballistic control approach based on cloud model is proposed in this paper. First, the mechanism model of steering gear system is introduced. Second, the structure of synchro-control system of twin-rudder is proposed based on the master-slave control strategy. Third, synchro-ballistic controller based on cloud model is designed to solve the nonlinearity and uncertainty of system. Finally, the designed controller is tested via simulation under two different situations. The simulated results demonstrate that this method is simple and has stronger robustness against the variation of states and parameters of plants. Hence, the validity and reliability of the method is proved for synchro-control of two rudders, which is a significant engineering application.
文摘According to statistics, there are more than 50 manufacturers of auto steering gear in China now, most of which are of annual output below 10,000 units. In 1993, the national total output of various kinds of steering gear is about 1,400000 units. There are six major ones among all these manufacturers.
