摘要:
A load variation amount can be derived from an output of a load sensor for detecting an external force acting on a watercraft. A computation can be performed whether or not the load variation amount is larger than a reference value calculated based on the load sensor output, a running state, and a navigation velocity. The width and the magnitude of a pulse are determined based on the load sensor output, the running state, and the navigation velocity, and the pulse is applied to a steering as reaction torque.
摘要:
A control unit for controlling multiple propulsion units can include plural propulsion units mounted at the stern of the boat to generate thrust. A control unit can be used to control the driving of each propulsion unit, and a target speed setting device can be used to establish a target speed of the boat, in which the control unit controls the driving of each propulsion unit according to the preset driving pattern to attain the target speed.
摘要:
A steering system for a boat can include a main switch for turning power on and off, an emergency stop switch for stopping an engine, a steering wheel for operation by an operator, a steering wheel displacement sensor for detecting the operator's displacement of the steering wheel, a rudder device with an electric actuator for providing a force to move a rudder about a rotational shaft according to the detected steering wheel displacement, and a controller for outputting a signal to drive the electric actuator according to the detected steering wheel displacement. The controller can drive the electric actuator of the rudder device to return the rudder to its center position when the engine is stopped by the main switch or an auxiliary stop switch.
摘要:
A rudder control device for a boat can include a handle position sensor for detecting an operation angle of a handle. An engine control unit can be provided for receiving a detection signal from the handle position sensor. A motor can be provided for receiving a control signal from the engine control unit to drive a steering member to a predetermined rotation angle corresponding to the operation angle. The engine control unit can receive a signal from a speed sensor for detecting a boat speed to control an upper limit of the rotation angle to be smaller when the boat speed is higher than a predetermined value than when not.
摘要:
A steering system for a boat can include a main switch for turning power on and off, an emergency stop switch for stopping an engine, a steering wheel for operation by an operator, a steering wheel displacement sensor for detecting the operator's displacement of the steering wheel, a rudder device with an electric actuator for providing a force to move a rudder about a rotational shaft according to the detected steering wheel displacement, and a controller for outputting a signal to drive the electric actuator according to the detected steering wheel displacement. The controller can drive the electric actuator of the rudder device to return the rudder to its center position when the engine is stopped by the main switch or an auxiliary stop switch.
摘要:
The chain of an electromotive chain saw is quickly stopped by the combined use of an electric brake and a mechanical brake when a trigger member is turned off. The rear end of a brake band disposed to tighten a brake drum by operating a hand guard is secured to a bent rod. When the trigger member is released, the brake band is normally tightened around the outer periphery of a brake drum by the urging force of a coil spring. When the trigger member is released, a circuit provided with a brake winding is closed, thereby applying a dynamic braking force. When the dynamic brake force is applied, a centrifugal clutch is released quickly and the speed of stopping the brake drum is accelerated.
摘要:
A process for purifying a polycarbonate resin solution which comprises passing a water-in-oil dispersion type (W/O) emulsion composed of a mixture of an organic solvent solution containing a polycarbonate resin with a aqueous solution and having water particles with an average diameter of 1 to 100 &mgr;m in an oil through a metallic filter having a filtering precision of 10 to 200 &mgr;m, and then, settling the mixture for 1 to 30 minutes to perform separation between the organic solvent solution containing a polycarbonate resin and the aqueous solution containing contaminations.
摘要:
A multi-layered polymer having (a) a core layer of an aromatic vinyl polymer, (b) an intermediate layer of a butadienic rubbery polymer and (c) an outer layer of an aromatic vinyl glassy polymer, the amount of the components (a), (b) and (c) being 12 to 42 weight %, 48 to 78 weight % and 10 to 40 weight %, respectively, provides a thermoplastic resin composition excellent not only in impact strength, especially in impact strength at low temperatures, but also in, in the case of containing a coloring agent, color-stability including less mottlings, and giving a molded article improved in preventing occurrence of delamination around the gate region.
摘要:
A fiber-reinforced resin composition having surface smoothness, which comprises(1) 100 parts by weight of a thermoplastic resin composition comprising an aromatic polycarbonate resin and a thermoplastic polyester resin in a weight ratio of from 10/90 to 90/10,(2) from 50 to 100 parts by weight of glass fiber sheet chips having an almost rectangular shape, each side having a length of from 1 to 30 mm, the glass fiber sheet chips being obtained by forming E-glass fibers having an average fiber diameter of 2 .mu.m or less which have been surface-treated with a silane coupling agent, into a sheet by a paper making process and then cutting the resulting sheet, and(3) from 0 to 40 parts by weight of a thermoplastic elastomeric polymer,and an exterior automotive part showing excellent image clarity, obtained by shaping the fiber-reinforced resin composition.
摘要:
A watercraft includes a plurality of watercraft operating devices arranged to adjust an amount and/or a direction of a propulsive force or a resistance provided to a prescribed position of the watercraft, operation devices arranged to operate the plurality of watercraft operating devices, actuators arranged to actuate the respective watercraft operating devices, and a control unit arranged to control an operation amount of each of the actuators based on an operational state of the operation devices. The control unit preferably includes a traveling state detecting device arranged to detect a traveling state of the watercraft, an operational state detecting device arranged to detect an operational state of the operation devices, a traveling plan estimating device arranged to estimate a traveling plan of an operator of the watercraft based on the traveling state and the operational state, and a watercraft operating device controlling device arranged to select one of the watercraft operating devices to be controlled from the plurality of watercraft operating devices, and arranged to control an operating amount of the actuator operating the watercraft operating device.