Title:
【発明の名称】パワ-ステアリング制御装置及びその制御方法
Document Type and Number:
Japanese Patent JPS61503021
Kind Code:
A
Abstract:
Power assisted steering systems are commonly used on industrial vehicles such as industrial lift trucks. Advantageously, the output of such systems should be responsive to vehicle speed and the systems should be energy efficient. The subject power steering control system includes processor means for receiving a steering demand signal and a speed control signal, producing a high fluid flow rate signal in response to receiving the steering demand signal and to the speed control signal representing a vehicle speed less than or equal to a predetermined vehicle speed, producing a low fluid flow rate signal in response to receiving the steering demand signal and to the speed control signal representing a vehicle speed greater than the predetermined speed, and producing an idle fluid flow rate signal in response to failing to receive the steering demand signal. Hydraulic means receive the high, low, and idle fluid flow rate signals, produce respective predetermined hydraulic fluid flow rates in response to the received signal, and deliver the hydraulic fluid to the steering means.
Inventors:
Pizuka Ring William
Application Number:
JP50427884A
Publication Date:
December 25, 1986
Filing Date:
November 08, 1984
Export Citation:
Assignee:
Kyata Pira-Industrial Parakeet-Pole-Ted
International Classes:
B62D5/04; B62D5/065; B62D6/02; (IPC1-7): B62D6/02
Domestic Patent References:
| JPS58188752A | 1983-11-04 | |||
| JPS5327913A | 1978-03-15 | |||
| JPS5391215A | 1978-08-10 | |||
| JPS57122607A | 1982-07-30 |
Attorney, Agent or Firm:
Minoru Nakamura