Summary of the invention
The object of this invention is to provide a kind of electromagnetism energy feeding back type semi-active suspension sense of motion real-time control apparatus and method, be subject to larger force of inertia at vehicle and do the used time by suspension sense of motion being carried out to real-time control to reduce inclination and the pitching of vehicle, improve the driving safety of vehicle.
For achieving the above object, the technical scheme that electromagnetism energy feeding back type semi-active suspension sense of motion real-time control apparatus of the present invention adopts is: comprise electromagnetism energy regenerative damping force generator and control unit, electromagnetism energy regenerative damping force generator top is by energy regenerative motor stator, the energy regenerative motor of energy regenerative rotor and energy regenerative motor housing composition, nut-ball screw framework that bottom is made up of ball-screw and ball nut, ball-screw upper end is fixedly connected with energy regenerative rotor input shaft lower end, electromagnetism energy regenerative damping force generator is by energy regenerative control circuit electrical connection control unit, between energy regenerative motor and nut-ball screw framework, be provided with two-way controlled pair of ratchet device, two-way controlled pair of ratchet device is by being located at together first on energy regenerative rotor input shaft, the second ratchet device composition, first, two ratchet devices include ratchet, ratchet, ratchet rotating shaft, back-moving spring and electromagnet, ratchet is solidly set on energy regenerative rotor input shaft, ratchet rotating shaft one end affixed energy regenerative motor housing inwall, the other end connect ratchet, one end affixed energy regenerative motor housing inwall of back-moving spring, the affixed ratchet of other end one end, the other end of ratchet is near being fixed in the electromagnet on energy regenerative motor housing inwall, electromagnet electrical connection control unit is contrary with two described ratchet rotation directions of ratchet combination.
The technical scheme that the control method of electromagnetism energy feeding back type semi-active suspension sense of motion real-time control apparatus of the present invention adopts is to have the following steps: 1) control unit sends control signal to the one of first, second ratchet device, control one adhesive in the first electromagnet or the second electromagnet, the first ratchet is combined with the first ratchet around the first ratchet rotating shaft left-hand revolution, energy regenerative rotor input shaft only can rotate in the counterclockwise direction, and suspension can only stretch; Or the second ratchet is combined with the second ratchet around the second ratchet rotating shaft clickwise, and energy regenerative rotor input shaft only can rotate along clockwise direction, and suspension can only compress; 2) control unit is to all input control signals not of the first electromagnet and the second electromagnet, and the first ratchet and the first ratchet, the second ratchet and the second ratchet are all in released state, and suspension can stretch and compress.
The present invention adopts after technique scheme, and the beneficial effect having is: be subject to larger force of inertia at vehicle and do the used time, and can be by associated suspension sense of motion is controlled in real time, to reduce pitching and the inclination of vehicle, to improve the driving safety of vehicle.
The specific embodiment
As shown in Figure 1, the present invention applies to electromagnetism energy feeding back type semi-active suspension and control system thereof are; In vertical (direction of all physical quantitys relevant to suspension motion is all in vertical), wheel mass 6 forms wheel with tire equivalent spring 7, wheel is positioned at the below of spring carried mass 1, between wheel and spring carried mass 1, be parallel with axle spring 8 and electromagnetism energy regenerative damping force generator 2, wheel directly makes suspension produce to vibrate with ground interaction.In electromagnetism energy regenerative damping force generator 2, be provided with two-way all real-time two-way controlled pair of controlled ratchet devices 3; Two-way controlled pair of ratchet device 3 is connected in control unit 5 by control line, two current feedback wires of electromagnetism energy regenerative damping force generator 2 are connected in energy regenerative control circuit 4, energy regenerative control circuit 4 has many control lines and Duo Gen signal wire (SW) to be connected with control unit 5, and control unit 5 separately has and comes from steering wheel for vehicle rotary angle transmitter, brake pedal position signal sensor, body side to signals such as the steering wheel for vehicle corner of acceleration pick-up and the input of vehicle body longitudinal acceleration sensor, brake pedal position signal, vehicle body lateral acceleration, vehicle body longitudinal accelerations.
As shown in Figure 2, electromagnetism energy regenerative damping force generator 2 topmosts are upper hangers 9, and upper hanger 9 is fixedly connected with the energy regenerative motor housing 15 of top spring carried mass 1 and bottom, make electromagnetism energy regenerative damping force generator 2 upper ends connect spring carried mass 1 by upper hanger 9.Energy regenerative motor and two-way controlled pair of ratchet device 3 are set in energy regenerative motor housing 15 inner chambers.Energy regenerative motor is made up of energy regenerative motor stator 16, energy regenerative rotor 17 and energy regenerative motor housing 15, energy regenerative motor stator 16 is fixed on energy regenerative motor housing 15, and energy regenerative rotor 17 is coaxial and be positioned at the centre of energy regenerative motor stator 16 with energy regenerative motor stator 16.Energy regenerative motor lower portion is two-way controlled pair of ratchet device 3, two-way controlled pair of ratchet device 3 bottoms are nut-ball screw frameworks, nut-ball screw framework is made up of ball-screw 14 and ball nut 11, nut-ball screw framework protecting sleeve 10 of ball-screw 14 overcoat, upper end and the energy regenerative motor housing 15 of nut-ball screw framework protecting sleeve 10 join, and lower end and lower clutch release slave cylinder 13 join; Ball-screw 14 matches with ball nut 11, and ball nut 11 is fixedly installed on the upper surface of lower clutch release slave cylinder 13, and the bottom of ball-screw 14 extend into lower clutch release slave cylinder 13 inside, and composition nut-ball screw framework, can be converted into circular movement by straight-line motion.Ball-screw 14, two-way controlled pair of ratchet device 3 and the equal coaxial rotation of energy regenerative rotor 17.Ball nut 11 does not have change in location and does not rotatablely move in vertical with respect to wheel.
The lower surface of lower clutch release slave cylinder 13 connects lower hanger 12, and lower hanger 12 is fixedly connected with wheel mass 6, makes electromagnetism energy regenerative damping force generator 2 lower ends be fixedly connected with wheel mass 6 by lower hanger 12.
As shown in Figure 3, two-way controlled pair of ratchet device 3 is made up of to the coaxial upper and lower installation of unidirectional controlled ratchet device two prescriptions, be arranged on the energy regenerative rotor input shaft 23 of energy regenerative rotor 17, the upper end of ball-screw 14 is fixedly connected with energy regenerative rotor input shaft 23 lower ends simultaneously.As shown in Fig. 3 a and 3b, be the first ratchet device, is the second ratchet device as shown in Fig. 3 c and 3d.Wherein, the first ratchet device comprises the first ratchet 24-1, the first ratchet 22-1, the first back-moving spring 19-1, the first ratchet rotating shaft 20-1 and the first electromagnet 21-1; The first ratchet 24-1 passes through first key 18-1 fixed cover on energy regenerative rotor input shaft 23; First ratchet rotating shaft 20-1 one end is fixed on the inwall of energy regenerative motor housing 15, the other end connects the first ratchet 22-1; One end of the first back-moving spring 19-1 is fixed on energy regenerative motor housing 15 inwalls; The other end of the first back-moving spring 19-1 is fixedly connected with one end of the first ratchet 22-1, is the first electromagnet 21-1 near the other end place of the first ratchet 22-1, and the first electromagnet 21-1 is fixedly connected on the inwall of energy regenerative motor housing 15 and electrical connection control unit 5.
Fig. 3-a is that the first electromagnet 21-1 does not receive the working signal from control unit 5, the first electromagnet 21-1 does not switch on and does not produce the suction-combining force, the first ratchet 22-1 under the effect of the first back-moving spring 19-1 pulling force with the first ratchet 24-1 in released state, now the rotation of the input shaft 23 of energy regenerative rotor 17 is unrestricted.Fig. 3-b is that the first electromagnet 21-1 receives from the working signal of control unit 5 and adhesive the first ratchet 22-1, the suction-combining force drives the first ratchet 22-1 motion, overcome the first back-moving spring 19-1 pulling force and make the first ratchet 22-1 make the first ratchet 22-1 and the first ratchet 24-1 in bonding state around the first ratchet rotating shaft 20-1 left-hand revolution, now energy regenerative rotor input shaft 23 only can rotate in the counterclockwise direction.
As shown in Fig. 3-c and 3-d, the second ratchet device comprises the second ratchet 24-2, the second ratchet 22-2, the second ratchet rotating shaft 20-2, the second back-moving spring 19-2 and the second electromagnet 21-2, and the second ratchet 24-2 passes through the second key 18-2 fixed cover on the input shaft 23 of energy regenerative rotor 17; Second ratchet rotating shaft 20-2 one end is fixedly connected on the inwall of energy regenerative motor housing 15, the other end connects the second ratchet 22-2; One end of the second back-moving spring 19-2 is fixed on energy regenerative motor housing 15 inwalls, the other end of the second back-moving spring 19-2 is fixedly connected with one end of the second ratchet 22-2, the other end of the second ratchet 22-2 is near the second electromagnet 21-2, and the second electromagnet 21-2 is fixedly connected on the inwall of energy regenerative motor housing 15 and electrical connection control unit 5.
Fig. 3-c represents that the second electromagnet 21-2 does not receive the working signal from control unit 5, the second electromagnet 21-2 does not switch on and does not produce the suction-combining force, the second ratchet 22-2 under the effect of the second back-moving spring 19-2 pulling force with the second ratchet 24-2 in released state, the now rotation of the input shaft 23 of energy regenerative rotor 17 is not subject to the restriction of the second ratchet device; Fig. 3-d represents that the second electromagnet 21-2 receives from the working signal of control unit 5 and adhesive the second ratchet 22-2, the suction-combining force overcome the second back-moving spring 19-2 pulling force make the second ratchet 22-2 around the second ratchet rotating shaft 20-2 dextrorotation then make the second ratchet 22-2 and the second ratchet 24-2 in bonding state, now energy regenerative rotor input shaft 23 only can rotate along clockwise direction.
The rotation direction of two ratchets in two-way controlled pair of ratchet device 3 is contrary, controls stretching and the compression of suspension with this.When the first ratchet device as shown in Fig. 3 a and 3b is worked, the first ratchet 24-1, in the time that the first ratchet is combined, can only rotate by anticlockwise direction, i.e. suspension motion can only stretch; When the second ratchet device as shown in Fig. 3 c and 3d is worked, the second ratchet 24-2 can only rotate along clockwise direction in the time that the second ratchet is combined, i.e. suspension motion can only be compressed.
Fig. 1 and Fig. 2 are presented at ball nut 11 in vertical and are connected in wheel by lower clutch release slave cylinder 13 and lower hanger 12, and ball nut 11 does not have change in location and rotatablely moves with respect to wheel; Ball screw 14 is fixedly connected with energy regenerative rotor 17, and the relative energy regenerative motor stator of ball screw 14 16 and energy regenerative motor housing 15, without change in location in vertical, but have change in location on hand of rotation.Energy regenerative motor housing 15 is fixedly connected with spring carried mass 1 by upper hanger 9, cause the relative spring carried mass 1 of ball screw 14 in vertical without change in location, but on hand of rotation, have change in location.
When Vehicle Driving Cycle, control unit 5 is only to the one input control signal in the first ratchet device and the second ratchet device.When control unit 5 is to the first electromagnet 21-1 and all not input service signals of the second electromagnet 21-2, the first ratchet 22-1 and the first ratchet 24-1 are in released state, the second ratchet 22-2 and the second ratchet 24-2 are also in released state, and now suspension can stretch or compress.
When vehicle is during at straight-line travelling emergency braking, control unit 5 is according to brake pedal position signal, vehicle body longitudinal acceleration signal judges when vehicle body may larger pitching occur, control unit 5 is to the second electromagnet 21-2 input control signal on the electromagnetism energy regenerative damping force generator 2 of vehicle rear suspension, second electromagnet 21-2 produce the suction-combining force overcome the second back-moving spring 19-2 pulling force make the second ratchet 22-2 around the second ratchet rotating shaft 20-2 dextrorotation then make the second ratchet 22-2 and the second ratchet 24-2 in bonding state, now energy regenerative rotor input shaft 23 only can rotate along clockwise direction, the rotation of energy regenerative rotor input shaft 23 drives ball-screw 14 in vertical, only can do downward straight-line motion with respect to ball nut 11.Because ball-screw in vertical 14 is in full accord with the change in location of spring carried mass 1, ball nut 11 is in full accord with the change in location of wheel mass 6, therefore above-mentionedly only can cause the suspension of vehicle only compressible by downward straight-line motion.Control unit 5 is to the first electromagnet 22-1 output services signal in the electromagnetism energy regenerative damping force generator 2 of vehicle front suspension simultaneously, the first electromagnet 22-1 generation the suction-combining force overcomes the first back-moving spring 19-1 pulling force makes the first ratchet 22-1 make the first ratchet 22-1 and the first ratchet 24-1 in bonding state around the first ratchet rotating shaft 20-1 left-hand revolution, now energy regenerative rotor input shaft 23 only can rotate in the counterclockwise direction, energy regenerative rotor input shaft 23 rotates and drives ball-screw 14 and ball nut 11 to interact, make ball-screw 14 in vertical, only can do straight-line motion upwards with respect to ball nut 11, cause the front suspension of vehicle only can stretch, thereby realize the pitching that reduces vehicle body, and then safety while improving vehicle straight-line travelling emergency braking.
In the time that control unit 5 judges that according to steering wheel angle signal and vehicle body lateral acceleration signal vehicle body larger side may occur inclines, the second electromagnet 21-2 input control signal inside control unit 5 travels to Vehicular turn in the electromagnetism energy regenerative damping force generator 2 of suspension, second electromagnet 21-2 produce the suction-combining force overcome the second back-moving spring 19-2 pulling force make the second ratchet 22-2 around the second ratchet rotating shaft 20-2 dextrorotation then make the second ratchet 22-2 and the second ratchet 24-2 in bonding state, now energy regenerative rotor input shaft 23 only can rotate along clockwise direction, anti-clockwise rotates and is limited, energy regenerative rotor input shaft 23 limit rotation are delivered to ball-screw 14, ball-screw 14 interacts with ball nut 11, cause Vehicular turn travel inner side suspension only compressible, the first electromagnet 22-1 input control signal outside while control unit 5 travels to Vehicular turn on the electromagnetism energy regenerative damping force generator 2 of suspension, the first electromagnet 22-1 generation the suction-combining force overcomes the first back-moving spring 19-1 pulling force makes the first ratchet 22-1 make the first ratchet 22-1 and the first ratchet 24-1 in bonding state around the first ratchet rotating shaft 20-1 left-hand revolution, now energy regenerative rotor input shaft 23 only can rotate in the counterclockwise direction, clockwise rotation is limited, the rotation of energy regenerative rotor input shaft 23 finally make Vehicular turn travel outside suspension only can stretch, thereby realize the inclination that reduces vehicle body, and then raising Vehicular turn driving safety.
When vehicle is in the time that Turning travel is braked, control unit 5 is according to steering wheel angle signal, brake pedal position signal, vehicle body lateral acceleration signal, vehicle body longitudinal acceleration judges when inclination and pitching may occur vehicle body simultaneously, inside control unit 5 travels to Vehicular turn there is the second electromagnet 21-2 input control signal on 2 in the electromagnetism energy regenerative dumping force of rear suspension, second electromagnet 21-2 produce the suction-combining force overcome the second back-moving spring 19-2 pulling force make the second ratchet 22-2 around the second ratchet rotating shaft 20-2 dextrorotation then make the second ratchet 22-2 and the second ratchet 24-2 in bonding state, now energy regenerative rotor input shaft 23 only can rotate along clockwise direction, anti-clockwise rotates and is limited, energy regenerative rotor input shaft 23 limit rotation are delivered to ball-screw 14, ball-screw 14 and ball nut 11 interact and these energy regenerative rotor input shaft 23 limit rotation are converted into ball-screw 14 in vertical only can do downward straight-line motion with respect to ball nut 11, therefore the above-mentioned Vehicular turn inner side rear suspension that travels that only can downward straight-line motion causes is only compressible, outside while control unit 5 travels to Vehicular turn there is the first electromagnet 22-1 input control signal in 2 in the electromagnetism energy regenerative dumping force of suspension and another front suspension, the first electromagnet 22-1 generation the suction-combining force overcomes the first back-moving spring 19-1 pulling force makes the first ratchet 22-1 make the first ratchet 22-1 and the first ratchet 24-1 in bonding state around the first ratchet rotating shaft 20-1 left-hand revolution, now energy regenerative rotor input shaft 23 only can rotate in the counterclockwise direction, clockwise rotation is limited, above-mentioned energy regenerative rotor input shaft 23 limit rotation are delivered to ball-screw 14, ball-screw 14 and ball nut 11 interact and these energy regenerative rotor input shaft 23 limit rotation are converted into ball-screw 14 in vertical only can do straight-line motion upwards with respect to ball nut 11, therefore above-mentioned travel outside suspension and another front suspension of Vehicular turn that only can straight-line motion upwards cause only can stretch, thereby realize the inclination and the pitching that reduce vehicle body simultaneously, and then reach the object of safety while improving Vehicular turn travelling brake.