Patents Assigned to Japan Electronics Industry, Limited
-
Method of controlling anti-lock brake system for vehicles and method of finding control point in ABS
Publication number: 20060250023Abstract: In an anti-lock brake system mounted on a vehicle wherein when the vehicle is braked in an emergency during running, an increase in the road surface friction force or road surface friction coefficient owing to an increase in the brake pressure is detected by a road surface friction force detecting device or road surface friction coefficient detecting device. The optimum control start point associated with an increase in the signal value of the road surface friction force F or road surface friction coefficient ? provided by the road surface friction force detecting device or road surface friction coefficient detecting device is decided by using a decrease in the wheel speed, i.e., by using the wheel speed ? or d?/dt. Thereafter, from the point where the specified value of control based on F or ?, or dF/dt or d?/dt, the brake pressure is moved from the pressure increasing mode to the pressure retaining or decreasing mode.Type: ApplicationFiled: July 5, 2006Publication date: November 9, 2006Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki -
Publication number: 20060220454Abstract: A vehicular antilock brake control system does not require a lengthy extension piping from its actuator. The system provides for an accurate controlling method for maximizing a calculated road surface friction coefficient. Each wheel has a control unit consisting of a stress sensor, a controller and an actuator installed at the respective wheel. A stress value is detected, representative of road surface friction value or road surface friction coefficient value, for the corresponding wheel independently of the other wheels. In response to the output signal of the sensor, the controller regulates the actuator which controls brake fluid pressure applied to the respective wheel.Type: ApplicationFiled: May 18, 2006Publication date: October 5, 2006Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Patent number: 7113858Abstract: A method for cyclically controlling the braking of a vehicle includes the following steps: (a) detecting a road surface frictional force of said vehicle, (b) detecting a brake fluid pressure, and (c) controlling the brake fluid pressure in response to detected values including the brake fluid pressure and the road surface frictional force, the controlling including decreasing the brake fluid pressure in response to the road surface frictional force declining during an increase of the brake fluid pressure and increasing the brake fluid pressure in response to the road surface frictional force declining during fall-off of the brake fluid pressure.Type: GrantFiled: July 6, 2004Date of Patent: September 26, 2006Assignee: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20060207336Abstract: The invention provides a wheel-acting force measuring device free from the influences of cross talk due to brake torque (torsional torque). A hole is formed in or adjacent an axle of a vehicle at a brake caliper angle or an angle close thereto, and a stress detecting sensor is embedded at a position in the hole which coincides with the stress center axis of or adjacent the axle.Type: ApplicationFiled: May 18, 2006Publication date: September 21, 2006Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20060212206Abstract: A method for cyclically controlling the braking of a vehicle includes the following steps: (a) detecting a road surface frictional force of said vehicle, (b) detecting a brake fluid pressure, and (c) controlling the brake fluid pressure in response to detected values including the brake fluid pressure and the road surface frictional force, the controlling including decreasing the brake fluid pressure in response to the road surface frictional force declining during an increase of the brake fluid pressure and increasing the brake fluid pressure in response to the road surface frictional force declining during fall-off of the brake fluid pressure.Type: ApplicationFiled: May 18, 2006Publication date: September 21, 2006Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Method of controlling anti-lock brake system for vehicles and method of finding control point in ABS
Patent number: 7077483Abstract: In an anti-lock brake system mounted on a vehicle wherein when the vehicle is braked in an emergency during running, an increase in the road surface friction force or road surface friction coefficient owing to an increase in the brake pressure is detected by a road surface friction force detecting device or road surface friction coefficient detecting device. The optimum control start point associated with an increase in the signal value of the road surface friction force F or road surface friction coefficient ? provided by the road surface friction force detecting device or road surface friction coefficient detecting device is decided by using a decrease in the wheel speed, i.e., by using the wheel speed ? or d?/dt. Thereafter, from the point where the specified value of control based on F or ?, or dF/dt or d ?/dt, the brake pressure is moved from the pressure increasing mode to the pressure retaining or decreasing mode.Type: GrantFiled: June 18, 2003Date of Patent: July 18, 2006Assignee: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki -
Patent number: 7052096Abstract: A vehicular antilock brake control system does not require a lengthy extension piping from its actuator. The system provides for an accurate controlling method for maximizing a calculated road surface friction coefficient. Each wheel has a control unit consisting of a stress sensor, a controller and an actuator installed at the respective wheel. A stress value is detected, representative of road surface friction value or road surface friction coefficient value, for the corresponding wheel independently of the other wheels. In response to the output signal of the sensor, the controller regulates the actuator which controls brake fluid pressure applied to the respective wheel.Type: GrantFiled: August 7, 2002Date of Patent: May 30, 2006Assignee: Japan Electronics Industry LimitedInventor: Nagao Miyazaki
-
Publication number: 20060075811Abstract: A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.Type: ApplicationFiled: November 17, 2005Publication date: April 13, 2006Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20050274201Abstract: A stress composite sensor has a plurality of sensor elements each including a base plate and a stress sensor disposed thereon for delivering stress signals indicating stress in one direction alone. The sensor elements have the base plates fixed together in a common plane to form a sensor segment wherein the stress sensors are provided at intervals to provide signals indicating stress in the one direction. The stress sensors optionally each include strain gauges and in an embodiment include four strain gauges. The sensor elements are arranged in rows in an embodiment and are optionally integrally fixed together.Type: ApplicationFiled: May 31, 2005Publication date: December 15, 2005Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Patent number: 6904812Abstract: A stress composite sensor has a plurality of sensor elements each including a base plate and a stress sensor disposed thereon for delivering stress signals indicating stress in one direction alone. The sensor elements have the base plates fixed together in a common plane to form a sensor segment wherein the stress sensors are provided at intervals to provide signals indicating stress in the one direction. The stress sensors optionally each include strain gauges and in an embodiment include four strain gauges. The sensor elements are arranged in rows in an embodiment and are optionally integrally fixed together.Type: GrantFiled: October 18, 2002Date of Patent: June 14, 2005Assignee: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20050004740Abstract: A method for cyclically controlling the braking of a vehicle includes the following steps: (a) detecting a road surface frictional force of said vehicle, (b) detecting a brake fluid pressure, and (c) controlling the brake fluid pressure in response to detected values including the brake fluid pressure and the road surface frictional force, the controlling including decreasing the brake fluid pressure in response to the road surface frictional force declining during an increase of the brake fluid pressure and increasing the brake fluid pressure in response to the road surface frictional force declining during fall-off of the brake fluid pressure.Type: ApplicationFiled: July 6, 2004Publication date: January 6, 2005Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20040255659Abstract: The invention provides a wheel-acting force measuring device free from the influences of cross talk due to brake torque (torsional torque).Type: ApplicationFiled: July 23, 2004Publication date: December 23, 2004Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Patent number: 6832512Abstract: A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.Type: GrantFiled: February 18, 2003Date of Patent: December 21, 2004Assignee: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20040221662Abstract: A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.Type: ApplicationFiled: June 15, 2004Publication date: November 11, 2004Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Patent number: 6772624Abstract: The invention provides a wheel-acting force measuring device free from the influences of cross talk due to brake torque (torsional torque). A hole is formed in or adjacent an axle of a vehicle at a brake caliper angle or an angle close thereto, and a stress detecting sensor is embedded at a position in the hole which coincides with the stress center axis of or adjacent the axle.Type: GrantFiled: January 3, 2002Date of Patent: August 10, 2004Assignee: Japan Electronics Industry LimitedInventor: Nagao Miyazaki
-
Method of controlling anti-Lock brake system for vehicles and method of finding control point in ABS
Publication number: 20030218379Abstract: In an anti-lock brake system mounted on a vehicle wherein when the vehicle is braked in an emergency during running, an increase in the road surface friction force or road surface friction coefficient owing to an increase in the brake pressure is detected by a road surface friction force detecting device or road surface friction coefficient detecting device. The optimum control start point associated with an increase in the signal value of the road surface friction force F or road surface friction coefficient &mgr; provided by the road surface friction force detecting device or road surface friction coefficient detecting device is decided by using a decrease in the wheel speed, i.e., by using the wheel speed &ohgr; or d&ohgr;/dt. Thereafter, from the point where the specified value of control based on F or &mgr;, or dF/dt or d&mgr;/dt, the brake pressure is moved from the pressure increasing mode to the pressure retaining or decreasing mode.Type: ApplicationFiled: June 18, 2003Publication date: November 27, 2003Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki -
Patent number: 6651518Abstract: A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.Type: GrantFiled: October 3, 2000Date of Patent: November 25, 2003Assignee: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20030182045Abstract: A method for cyclically controlling the braking of a vehicle includes the following steps: (a) detecting a road surface frictional force of said vehicle, (b) detecting a brake fluid pressure, and (c) controlling the brake fluid pressure in response to detected values including the brake fluid pressure and the road surface frictional force, the controlling including decreasing the brake fluid pressure in response to the road surface frictional force declining during an increase of the brake fluid pressure and increasing the brake fluid pressure in response to the road surface frictional force declining during fall-off of the brake fluid pressure.Type: ApplicationFiled: April 15, 2003Publication date: September 25, 2003Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20030126917Abstract: A device for measuring action force of a wheel includes a vehicle axle upon which the wheel is mounted, the vehicle axle having a stress neutral line, and a stress detecting sensor having at least one strain gauge. The stress detecting sensor is disposed within the vehicle axle so as to detect at least one of a horizontal shear stress and a vertical sheer stress with the at least one strain gauge being one of aligned with or proximate the stress neutral line thereby permitting substantial removal of axle torque influence from an output of the stress detecting sensor. A signal processing circuit processes the output of the stress detecting sensor.Type: ApplicationFiled: February 18, 2003Publication date: July 10, 2003Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki
-
Publication number: 20030097886Abstract: A stress composite sensor has a plurality of sensor elements each including a base plate and a stress sensor disposed thereon for delivering stress signals indicating stress in one direction alone. The sensor elements have the base plates fixed together in a common plane to form a sensor segment wherein the stress sensors are provided at intervals to provide signals indicating stress in the one direction. The stress sensors optionally each include strain gauges and in an embodiment include four strain gauges. The sensor elements are arranged in rows in an embodiment and are optionally integrally fixed together.Type: ApplicationFiled: October 18, 2002Publication date: May 29, 2003Applicant: Japan Electronics Industry, LimitedInventor: Nagao Miyazaki